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20-022
RESOLUTION AMENDING IMPROVEMENT STANDARDS PURSUANT TO BUTTE COUNTY CODE SECTION 20-120 WHEREAS, the improvement standards are adopted by resolution pursuant to Butte County Code section 20-120 and the Board of Supervisors last amended improvement standards on October 24, 20016 by Resolution No, 06-149; WHEREAS, the Board of Supervisors desires to amend the existing improvement standards and establish certain new standards; WHEREAS, the current rainfall standards are based on limited historical data up and there is more thorough and inclusive data:, easily accessible online by the National Oceanic and Atmospheric Administration (NOAA); WHEREAS, the NOAA data allows for more site specific rainfall data to be used for design purposes which improves the accuracy of infrastructure designs; NOW, THEREFORE, BE IT RESOLVED that the Butte County Board of Supervisors hereby amends the improvement standards pursuant to Butte County Code section 20-120 as follows: vote: Replace Section 10 with the amended portion of Section 10 in Exhibit A; and Replace Appendix IV Drainage Charts Standards D-1, D-2, and D-3 with the new Charts D -1A through D -1N in Exhibit B. PASSED AND ADOPTED by the Butte County Board of Supervisors this 11" of February, 2020, by the following AYES: Supervisors Connelly, Lucero, Ritter, Teeter, and Chair Lambert NOES: None ABSENT: None RECUSALS: None UVE-a" Shari McCracken, Chief Administrative Officer and Clerk of the Board of Supervisors By: Deputy,f Steve Lambehair e Butte County Board of Supervisors REPLACE THE FOLLOWING EXISTING TEXT OF SECTION 10: 10.05-3.01 , iRteRsity iR iRehes peF hebw f9F a 10 year ;-;;;d- a 1-00 yeaF fFe9bieRr=Y steFm. IF; -- ease, shall the WITH THE FOLLOWING TEXT: 10.05-3.01 Use current National Oceanic and Atmospheric Administration (NOAA) point precipitation frequency estimates from online website mapping tool at hffps://hdsc.rnws.rnoaa.Lov/hdscbfds/ fds ma _�!2!]f.h1Ml?b� rk= na to determine rainfall intensity in inches per hour for a 10 -year and a 100 -year frequency storm. Utilize precipitation data from 5 -minutes through 24 -hours in hydrology calculations. Provide documentation of the project site location and NOAA data used in calculations. Documentation shall be a digital or hard- copy printout of the website information. In the event the NOAA Website is not accessible, use Tables D -1A through D -IN. gra APPENDIX IV DRAINAGE CHARTS Chico Area Rainfall Data; Intensity D -1A Chico Area Rainfall Data; Depth D-113 Forest Ranch Area Rainfall Data; Intensity D -IC Forest Ranch Area Rainfall Data; Depth D -ID Magalia Area Rainfall Data; Intensity D -1E Magalia Area Rainfall Data; Depth D -IF Cohasset Area Rainfall Data; Intensity D -IG Cohasset Area Rainfall Data; Depth D-11-1 Concow Area Rainfall Data; Intensity D-11 Concow Area Rainfall Data; Depth D -1J Oroville Area Rainfall Data; Intensity D -1K Oroville Area Rainfall Data; Depth D-11- -1LBerry BerryCreek Area Rainfall Data; Intensity D -IM Berry Creek Area Rainfall Data; Depth D -IN Reserved for Future Use D-2 Reserved for Future Use D-3 Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html CHICO (intensity, in/hr) 4'1";�Z'"'� INOAA Atlas 14, Volume 6,, Vei-sloin 2 Location narne: Chilco, Callifomila,, USA* ojv.� Latitude: 3,9.7617', LongltUde: -1213602' Elevatimv: 455.4 ft'* J2GS POINT PRECIPITATION FREQUENCY ESTIMATES 2a,ija Pence, 3wah Diefa, Saaaxr HemLiNign IHiiner 11'�eZlungL l-A-9itar[a, Da[_vairah %4_91,in. Sandra Favlowle IlJrani RDy Ca,t Trypailluk, Dgle Urnun, Fpirglin Y'an kfi&asl w',ekta 7an Z11'ac, Gemffrey Ec,,rn,n Daniell IBxewp, L<huan C. ,en, 7ye Pqrzybok, JiDhn Yarchoan TDAA Nabora9 Waafther Cerv,-._ S lye, Spring, Mzryl-gind PF tabdar I PF grapKI Majae �PIS tabular PDS -based point precipitation frequency estimates with 90% confidence intervals (in inchesilhouir)l F'.7ti-IF-T-� Average recurrence interval (years) F-27 F-57 F-1-0-7 F-2-57 F__5_07 F -TO -0 7 F20_0 7 F50_07 F_F0 0-07 F1 r,� F_2._03� F_2._53� F_3.2_0_� F_3.7_6_� F_4._49� F_5._05_� F_5._63� F_6._23� FT_02_�FT_64_� (119-2.98� I (2.75-3.79� I �3.19-4.4&� 14.02-S.43� I Q4.34-7.3a� l4�64-84C I l4M-10.0� �,5 21-11 3) 1 -_45-T-T-82 T_23,o540 0 2 14LL1 �97-2 71)�[ 2.21'9-3_290'� 2.&2-3 gq�J[ 2 a8-4 61UL3 11-5 �2,3) - - 1 �1�2�5�1�7 L 1 �5,7- 12( [_L132-f,.G4',Jj �3�57:7�M :?. 1 1; 117 F -1 . 4-7 F -1 . 8-6 F -2. 1-7 F -2. _60- F -2. _92- F -3. 2-13 F --- 3--6(-)-7F--A OrG 0 4,42� f5 -renin F .3 �,j (126-1.72( I (1.59-2.`!S( I Q1.84-2.58� �2 11-322� I q2.32-3.72� 12.51-4.2&� I (2.684.97� I (2.88-5.78� 01-6. , q 7F 1 73 7F 1 9 FT,, 60i 6 9101-Oq-80-7 7-1 2-4-7 F-1-4-5 2.95 �172r q1.41-2.15) 2 17 7F 79-3..25y F 271 7�F2 37� I I l`1I lt92-1W � 01-4. [��F_0.497 �F0 1.73 1.88 l�0,42�8�0,5,83��[OL.536-D-T32',JLO.67q�-_0.92-c)� 0.782-1.10� LL0.398-1.370 22-2.46 29-2.78f JLL ...... ..... J 350r -------- -7 F_0_. 5_4_8� 0.638 638, F_0_7_5_6�� F_0_8_4_6� F-0 _936_� F-1 _03� F-1 _15_�� 1.25 FTh 7,1 �0 30.2-11,411 �F 0438 (0.6721-1.03� I (0.722-1.23� I (0.767-1.39� (D.P,48-1 W 60 �o 30.4501 1 0.521 �F-0-6-1-6, 0.928 1.00 7rF 0.28'a 7F OT 3� 8, 658- 1.'3 82'-'l oa-h 1�0.249-0.3W�1�0309-0.42 8-0.5,30��J(OA43-0.621� (M20,-1.13� �� 2� (015 49� [6 him 0117 F_1)_21,17F_0_,217F_0 _371 7=====0jj �910 l�O�190�0�2�45��[OL.225-0-307',[OL�2gG-D-3F5� 03211-04W 493-1.0 F 2-h 7rl 0.146 _0_. 1_3_7 0.239 0.27'9 -0 _33_2� F-0 _37_0�� F-0 _40_8�� FO _44_6�� 0.495 0531 p. 12:6-0.17 1�0. I &I -0.2:20� 1�0.205-0.2:82� h0 .237 j(,0 270-0 411) 10.294-0.47 1 1 -0.704][0. 36-2-0.768� ;Th7rF 0 -.1 -05 -770 -.I -39-770-.1-82-770-.2-15,-7F -0.2-58-7�F -0.2-99-7�F -0.3-20-7�F -0.3-50-7F -0.3-90-7f 0.419 F F-0 _070_�F_0 _093_�F_0 _122_�F_0 _145_�F_0 _174_�F_0 _11M]F-0 _216_]F_0 _237_]F_0_2_64j(0 0.284 Fi,7iay 206-0 395'_ _200.219 [T,7jaYF_0 _055_�F_0 _072_�F_0.094 _�F_0 _112_�F_0 _134_�F_0 _151_]F_0 _167_�F_0 _133_]F_04 032-0111)�J(M97-0.132p$�G, 113-0 ](U 160-0 305°1 Fo 0.1111 [�� 1q0�04H�053�iG.653 G.GaO', iG 660-D 0912} iD.6aG G 1091 iG 693-A.1a5f _0.103 D 155 10 1Tf 6 fa�5; f6 11D 0.15dj i6 127 6 227) {Gn132125Z� �F -0.0-32-7F -0.0-43-7F -0.0-55-7F 116 0.124 FiTy 0 0.090-0.172�� F 0-.0-26-770-.0-34-770-.0-44-770-.0-52-7F -0.0-677F -0.0-M-7F -0.0-75- -0.0-92-7F _0.0_90_ 0.096, 07C-0.13C� 20 -iia 0.017 0.023 0.029 0.0341 0 040 0.045 0 049 0 053 0.058 F a , 0. 62 0 Fa) -_0 _18 0.023 0.027 [= 0.035 0.048 80.616 0.G21°, _ LO 6210-0 G 27 �j LO 0 213 0 G 32 (0 029-0.0441 ===11035-0.067", 0.012 0.015 0.011J 0.022 F )0026 �F0'02700 0._6_2_6_7� [0 0. 0 28 F36 ](0.00-{)38C� 023-0.0 1(0�025-0.039��1(9-0.043� 1(9�-.049�� 29-0.05 0.031 0.033 024-0.046'i� Pracipitafici,n frequency (IPIF, esfirnares nn this, table are based on frequency anallysis of Ipartbal dUfallICII'l senes dPDS; Numbers, in parenthesis are PF asfimates at lower and upper hounds of the SO%, confidence interwal The probability that precipitation freqUeRCY esti mates rJclr a gNen duration and average recurrence Intervall) %V01 be giieateii thain the Uppell't)QUIXI for le -3s than the lower houndl-3 59,� Esfifliates at upperr bounds are not checked against probable maxAmuirn precip4ahan fPMIPr estimates and tray be higher Chan CUITently Valid RAP VZIkIeS Please iefer ici, NOAA Allas 14 dOGUIT161)f for m0re lnfonmaflan. Butte County Improvement Standards; Rainfall Criteria D-1 A Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html CHICO (Depth, in) NCAA Atlas 14, VOILEme 6, Version 2 "TX744, Location, il Chico. Cafifornia, USA' Ra Lafitude�: 39.7617', Loil -121.7602 Elevation: 455.4 ft" 440" Source ESIR� `V9ps, " SDLrce 12GG POINT PRECIPITATION FREQUENCY ESTIMATES E,a,nI3 FRrica, Sarah DIRLz, Sara?i l _Hh3n I-qljgeT, IK3ziun,7u N'lallaria, CeboirRh V31 n S-91ndr31 Favlovic zjiaii Any. Ca,1 T,VpalLk, Galla Jn,�n, FPrg1,r 'r an rlicl,aalY'alrta Tii Zllac, Gen fray Ecnnin __)aniall EremP7 Li-:huan Chen, -ye Parzybolk, JiDlhn (archoan NOAA, Aaticna, Vdaal:heT S- vv, e Slve, SI:h99 l0arylaimd IPF tabular I PF grap _41 �l Maps & ap6a s h_L �(PIF tabular I PDS -based r)&int ioreckAtation freall estimates with 90% confidence intervals (in inches)' Ili 5 -mein 10-nnin 15-nnin Minlin 60-nnin 2 -hr 3 -hr 6 -hr 12!-hii, 24-hii 2 -day 3 -day 4 -day 7 -day 10 -day 20(day 30-day 45 -day 60 -day Average FeCL1111-11-enCe intell-val (years) 20 92 0.367315 0.464 0.730 0.814 0.399 �F 343� 431 jft��L0397-_O 5415 (0.580 0 929flL &1 0 7 1 G T� 10 -s-7 -c 1 Lo 7 -5,2 1 5� o 390 7F-{)-.4-9O-7F-O-.6-l9-7F-0-7-24- 39 1000 0 0.169 F -0.2-11-7F -0.2-67-75=F f4.30-7.28� -0.3-74-7F -0.4-21-75MF-0.-51-971 (0.7106-1.137� �� 0.535 0.637 145-0.1981 jftlS,2-0.2'467 7F-0-33-3 LO 2,19 0 315�� 7F-0-44-8 328-0.5631 1l0�3135146C -7-453-6 7F-0-60-4 LO.335-_0.5313p 7F-0-6-73 0.701 5 0.87 S3 � 74 743 7[� �0 415-0.93C 0.839 0.913 0 2427F-(-)',0-3 2.06 2.30 2.4q 304-0.922�� 752-1.13 �� (0.3410-1.29( (1 8, 23-1. (1.34-2.1551 (1.44-2.45'1 595-1207 60.622-1.35] 20 92 0.367315 0.464 0.730 0.814 0.399 �F 343� 431 jft��L0397-_O 5415 (0.580 0 929flL &1 0 7 1 G T� 10 -s-7 -c 1 Lo 7 -5,2 1 5� o 390 7F-{)-.4-9O-7F-O-.6-l9-7F-0-7-24- 39 �2.W 85-4 4.666-7 0.975 9 09 1 20 1.36 1.46 I f4.30-7.28� 23.&4 (4.a&*. - 49712. (0.7106-1.137� �� (0.775-124( (M,33-1.421 I (O.P,95-1.63� (9.S62- 1 93� I 0.497 F-1--.6-23 T6.788T0-4-2-21 F1 10 1.24 9 36 1 53 1.73 1-88 328-0.5631 l90536.8�737°i L0175-0-92-cr, � 7 92 - 1_1(189&-1.07°i 1 r, J[j0 Clj I�.07-1-91',J[ 14-2.',Jj (1�212.2�461 �[ 1.29-278�j 0.701 5 0.87 F 1.51 1.6q 1.87 2.06 2.30 2.4q 304-0.922�� 752-1.13 �� (0.3410-1.29( (1 8, 23-1. (1.34-2.1551 (1.44-2.45'1 (1.53-2.79'1 (1.64-32S( (1.713-3.70 0.8,68 747-1.132) 10 X3,29-- 1 110 15591 0.1.33-1.97 1 51.3137 I 11 64-2.631 (1.76-2.99i (116-3.39- (1 99-3.97y R2.5-4.461 1 2 1 08 1.47 1 7G F-252 t2 21 2 94, F_ 3 38-7 3 9 4 3 381509', F_ 5 44 1 (4.7&-;5.3C 616 8213 10.0 76-11. 125 1 0-14. 150 F-1.56 11 35 1 841 2.26 I 94-. 65p FF _i 161a._-6 3u�� 17:3 31�LFaa2 ._93�77 77� _.G T_ _3.9,5 4.-25 2-88 3-3374.00 4-4674-9275`775.96 6.40 F7 3.34 44_ 36_7_5_113_T__6 19 -6g-47F-7 66_1F_6_41_T_ _936 7 10-1 17nC771261 7 3G-14.01 4.49 7F 5.87 6.94 834 9.37 1074 1 11.4 12.7 ' __� � : 13 .6 192-5.24 6 G 7 LP12-14.9,561 71� 9 9719 U 5.20 F 6.80 8.05 9.66 10.8 12.0 13.2 14.7 15.8 (4.55-6.10 (5.D3-7.961 I (696-949°i7) 1693-1341 (867-15.2°i (867-15.2°iI (10.3-17.1- �,11 1-19.3� I M 5-22.01 F-577 7� F -T-5 3_� F__8 _9 ol F__1 0.7 � F1 2_. 0_� Fl 312_�� Ft 4_.5_ 116.1 173' 6 -14.8) 11 4-18.9� 1�81 LL1_27_2_4_2)_J 1 ft!04674� �89 130� Ua�&E �12�2�2 -------7F ------- 7F__ 17.6 19.4 H. �8 F -7.167F 9.3o 7F 11,o 14.6 ]F I (626�8-&37� I I (9.48-12.79�Fo,13-1 9) �� (,2.0-18 1 (1313 .-21].0 I (13.62'.8'7I (14.7-26.2( F-8.-13-7 7-10-.5-7 F-1 2-.4-7 F-1 4-.7-7 7-16-.4-7 F-1 8-.077 7-1 q76--7 F-215.6-7 F-2 3-.0-7 '710.949pI (9.17-12.31 I 0.10.7-14.6" I (12.3-17.97 I 1135-7131 9'145-228".. 1'154-255- 163.292p 916.9-32.11 10.E _� F-13,9 7 F19.3 --� F-21.4 23.4 25.4 27.8 2M 1 (3.45-12.6p I (12.1-16.31 I (14.1-19.2" I (16.2-23.47 I (17.6-26.51 (1&9-29.7 19.9 33.1'1 (21.13-37.6( (21.7-41.2) 13.0 7-16-.7-7 F-19 .57 F-2 2-.9-7 7-2 5-.4-7 F-27 .77 7_31-10-7 F-3 25.8-7 F-34 11 4-152� I (14.6-19.51 1113-7x.97 (20.9-31.51 �22.3-35.1°i (23.5-39.10i (24.9-44.3( I 925.5-49.51 F 16.1 20.4 23.13 27.7 30.6 33.3 35.9 34.2 41.5 1411831 178-23.1 20.5-_27.9,,Jj 123�3 �33,,74 2s �2-3-, 9� LL30.4-57.8)j �113.6-22.2� I (20.9-27.D� �23.&-32.5� I �213.9-3D.10� (2,96.1-43.9� (30.D-49.6� �32.4-517� �33.9-610.7� I (34.9-o&6.2� I Precipiitatcunfiequeincy;IPIF7esiiinates onihislable fare based can fi-equeiiryaiiialysisofpartiialCILlrafiCi,ilsaiiesf.PEIS;. Numbers nn p are ntlies l.9 are PlFesfimates alkDwerand upgpei,houiiic:lsoftllheRCll,; confidenceinterval Theprolbability Haat prec pRa tion freq UeP c'y esfii nates jcir a givenrluirafion and average recui reace ii n teiv all } ull be gii eater T an the uppeirbounckorless thanflhe glowaerbouindll,-,35`,y Esltinialles atupper boundsairend checked agaiiis,tpioL,aID18in,ayliTtUIrfI Iplrecllprfaticm 1PFAIP6estrnaiesaind maybe higherthan curil PMP valrUeS Please il NOAA Atlas 14 dOGILlinent for lmdare ni'cil Butte County Improvement Standards; Rainfall Criteria D-1 B 39 �2.W 85-4 , 3. 545.671 (3.79-&.4C f4.30-7.28� 23.&4 (4.a&*. - 49712. 3.34 44_ 36_7_5_113_T__6 19 -6g-47F-7 66_1F_6_41_T_ _936 7 10-1 17nC771261 7 3G-14.01 4.49 7F 5.87 6.94 834 9.37 1074 1 11.4 12.7 ' __� � : 13 .6 192-5.24 6 G 7 LP12-14.9,561 71� 9 9719 U 5.20 F 6.80 8.05 9.66 10.8 12.0 13.2 14.7 15.8 (4.55-6.10 (5.D3-7.961 I (696-949°i7) 1693-1341 (867-15.2°i (867-15.2°iI (10.3-17.1- �,11 1-19.3� I M 5-22.01 F-577 7� F -T-5 3_� F__8 _9 ol F__1 0.7 � F1 2_. 0_� Fl 312_�� Ft 4_.5_ 116.1 173' 6 -14.8) 11 4-18.9� 1�81 LL1_27_2_4_2)_J 1 ft!04674� �89 130� Ua�&E �12�2�2 -------7F ------- 7F__ 17.6 19.4 H. �8 F -7.167F 9.3o 7F 11,o 14.6 ]F I (626�8-&37� I I (9.48-12.79�Fo,13-1 9) �� (,2.0-18 1 (1313 .-21].0 I (13.62'.8'7I (14.7-26.2( F-8.-13-7 7-10-.5-7 F-1 2-.4-7 F-1 4-.7-7 7-16-.4-7 F-1 8-.077 7-1 q76--7 F-215.6-7 F-2 3-.0-7 '710.949pI (9.17-12.31 I 0.10.7-14.6" I (12.3-17.97 I 1135-7131 9'145-228".. 1'154-255- 163.292p 916.9-32.11 10.E _� F-13,9 7 F19.3 --� F-21.4 23.4 25.4 27.8 2M 1 (3.45-12.6p I (12.1-16.31 I (14.1-19.2" I (16.2-23.47 I (17.6-26.51 (1&9-29.7 19.9 33.1'1 (21.13-37.6( (21.7-41.2) 13.0 7-16-.7-7 F-19 .57 F-2 2-.9-7 7-2 5-.4-7 F-27 .77 7_31-10-7 F-3 25.8-7 F-34 11 4-152� I (14.6-19.51 1113-7x.97 (20.9-31.51 �22.3-35.1°i (23.5-39.10i (24.9-44.3( I 925.5-49.51 F 16.1 20.4 23.13 27.7 30.6 33.3 35.9 34.2 41.5 1411831 178-23.1 20.5-_27.9,,Jj 123�3 �33,,74 2s �2-3-, 9� LL30.4-57.8)j �113.6-22.2� I (20.9-27.D� �23.&-32.5� I �213.9-3D.10� (2,96.1-43.9� (30.D-49.6� �32.4-517� �33.9-610.7� I (34.9-o&6.2� I Precipiitatcunfiequeincy;IPIF7esiiinates onihislable fare based can fi-equeiiryaiiialysisofpartiialCILlrafiCi,ilsaiiesf.PEIS;. Numbers nn p are ntlies l.9 are PlFesfimates alkDwerand upgpei,houiiic:lsoftllheRCll,; confidenceinterval Theprolbability Haat prec pRa tion freq UeP c'y esfii nates jcir a givenrluirafion and average recui reace ii n teiv all } ull be gii eater T an the uppeirbounckorless thanflhe glowaerbouindll,-,35`,y Esltinialles atupper boundsairend checked agaiiis,tpioL,aID18in,ayliTtUIrfI Iplrecllprfaticm 1PFAIP6estrnaiesaind maybe higherthan curil PMP valrUeS Please il NOAA Atlas 14 dOGILlinent for lmdare ni'cil Butte County Improvement Standards; Rainfall Criteria D-1 B Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html FOREST RANCH (intensity, in/hr) NOAA Mas 14, Voluill 6, version 2 Location niamie:: Forest Ranch, California, USA* Latitude:: 39.8911', Longiltude-121.66,515* Elevatiom 2682.5 ft" SoUlFue HERU `19PS' 0 " EoLrae USEGS P01INT PRECIPITAMIN FREQUENCY ESTIMATES 7-1. F-.., 3-h IDi.ta, Sar , IFe6an, Li I I an Kin-, azijn,.Au NA aiitsriia, DJ:orah, Va,,t n Sandra I?a allc"lint 1lz,rani Roy C:aTi LVpzqL.k, Gala Un7u?r, FPi-,g1,n 'r a,� `fifi& a 211 Ypkt a Tgn ZIn-9c, Ge'Dffrey Eonn,n, ICaniiell 12TN,&P7 IL -Chuan Chen, Tye P3rzybDIk, Jo[,n far&oan NCAA Ngtlona, V,ather G�rv,zp Gdwu S11pring, %inrylard PF labOaPF r� gi 1lica 111 1 F 110 �PIF tabular PIDS-based point (precipitation frequency estimates with 901% confidence intervals (lin inches1hour)1 Average recurrence hitenval years) 1 2 5 10 2,5 5O 1100 200 500 1000 2.63 3.24 4.04 4.6q 5. 57 6.24 6.92 7.63 8.58 9.31 L2_,,l i2�77�3�92:� I (3 4&-4 i4�52±.92� I i4�94�7�96:� i5�31R�10:� i&07�12�2:� �624_13�9� 1.88 F_ 2.52 (1.61-2.21� 1 (1.99-2.747,1 (2.47-3.43� (2.84-4.W (3.2'5-4.W (!M2-o&.52� (40,7-7.42� (438-,9.75,� (454-9,.W 61 4.00 4'41 5.30 2 71 3 22 (1„30 127&, (1.60-2.2U (2.00-2.76� (2.29-12C (2.&2-4.W (2.8,&-4.W (3.10S-5.25� (32S-5.98'� (3.51-7.W 1.28 1. 1p69", 1.85 2.20 2.4G 2.73 3.01 3.38 3.67 il�5,7�2�21:� il�79�2�73:� il�95�3�14:� I i12'4-4.0s:� i2�4�4�9] 0 2: �2�513�5�45,� - - - 5_�F 1 48 1.66 1.84 2.03 2.28 2.48 8_�F 12 8T 1 0 64-rntfl 1313!90.98722��j �0.7039-1.132� 1[0.919-1.27� I (1.21-11C I (1 32'-2 12'1 I (142-2.42� I (1 51=2.7&°i I (16,2-3.25� I F Th7,F _00_�F 5x28, 013 _0.7_65F l�0.430-O.q�690.528,-0.726��l�0.654-0.9F'4��I (0.74S-I.M I (M,49-1.30� I (0.32:4-1.49" (D.,992-I.M (1.12-2.2&� I (1.17-2.5C 0.420 0.517 O.G40 0.739 0.871 0.971 1.07 1.17 1.31 1.42 OL�361-0.4q5',,Jl�O�443-0�609��l�O�547-0�757��l�O�f,2�5,-O�883��I ft7l]9_1�M I �0�77131�2C I �0.874-lmS9� I �D�S2'9-1�87� I �D�SSS_2.10� FTh7, 0 - 319 �F 0.394 ��Jiio 0.489 7F -O -.5 -,64 -7F -O -.G -,64 -7F -O -.7 -4C -7F -O -.2 -l5 -7F -O -.2 -92 -7F -O -.q -94 -7F --l.-07-7 (0274-0.376��Ji(L339-0.464 418,.O.573��l40.477-0.674��l40.540,.0.826(�lq0.58,&-0.943(�I 1 (0.15&4.1.2 �� I (0.7104-1.42� I (0.7313-1.59� 0.238 12-hlr� 0.301 0.383 0.447 0.533 0.597 0.661 0.726 0.811 0.877 (0.597-1.3Cq 0.167 0.219 0.236 0.339 0. 409 0.4,62 0.515 0.5Fa9 0.640 0.694 0.1116 0,152 7F--O-.T9-8-7F-O-.-23-5-7F--O-.-2B-5-7F--O-.-3-22-7 0.360, 1 0.399 T45-07[ 0. 4_9_057� 1 ][0 � 0 FT'17-60.101_0.135�� F�O, 32:-0.177��lq0.172:-0.23��lg0.20,3-0.277��lq0.239-0.3461�lq0.2&5-O.3q9�� 2913-0.456�$0.313-0.513 _01_2 -clad Q0.08i1G�G8 QO 106 1_7F -0.1-57-7F -0.1-37-7F 6-7F -0.2-56-7F -0.2-3677[M[;;T4�[;= 0�220��1�0�19H�275��1�10 2r10 31PJ�0�2317"63�� 078, 0.266, 27 - ��Jiio 10 241 300 02�� 0. 0 68- 0.09 0, 069-0 1191 0, 116-0 155� � ll� 0. 1 a&- 0. 1 W � ll� 0. 160,- 0.232� � ll� 0. 17&- 0.267 94-0.305��l�0.20,9-0.346��l�0.202:7T.0 7406� 1[0.239-0.456r� F _0.0_57_�F _0.0_74_�F _0.596_�F _0.1_14_�F _0.1_37_�F _0.1_54_�F _0.1_71_�F _0.2_10_�F _0.2_27_�� FF,l,y7lQO050-0.067��lQO065-O.GP,7��l;C 084-0 113;$0.099-0.13C$10 115-0 ------ ----- --- 001.040 0.0517[ 0.060-7[ 0. 0-7-1-7 F 0 0 7 9 1 0.037 0.095 0 105 �F_0 1_12_�� CTU -0 309 0.032 5_2 d�y F _00_24_� F-O-.0-41-�F-O-.0-48-�F-O-.0-56-�F-O-.O- lqo021-0.029r l4O029-0.037r�l40.036,-0.048r�l40.041-0.056��lq0.047-0.06S��lq0.051-0.077��lQ0.05q�-0.067��lq0.059-0.096��l;C FJ62-0 110]li(0.0&4-0.121 1-1-1 F -0.0-41-1 F -0.0-51-1 F -0.0-54-1 LML=L= 1�0�02'97OM9�� l�O�03817�O�055��l�O�0417�O�062��l�O�044.,O069�� F_ 0.029 0 01.147 6Cjjii0 00.051 0 - 055 �F -0-0-58-�� 3S-0.0 40-0.0 F .01 ��Jiio 00.023 ll(0.0,-,,47F .,,,,7F -,4,Z o.001 & ---0.80 2 7� 2104.1027�$0.025-0.1034�[ 66][0.042-0.10747 li(0.043-0.1061 Precip'litafion fir queincy(IPIF�esfirl inihis,tall are brased orrf1`.qLlel1CY arnalysisofloartial dLlfaMGl1SelT&S P D S). Numbers in pralreent1resis are PF estil at low-ef and upper hounds of the S01% confidence inierval The prolbabilky tlha@ preGipilatiag ffeql.1,811Uf eSilll (for a given duration and average recurrence Pinteil oil he greateii than the upper ll r ' or less ffian the loweii lbouiqd1 is l at upper ll acre l checked against proll rl precitorl (FIMIP,', eshl and may the higher than C1.111'renfly Y31ld PIMP V311LIeS Pease afei to NOAA Atlas 14 dMllnerlt lar more Rfoil Butte County Improvement Standards; Rainfall Criteria D-1 C Rainfall Estimates provided are provided to supplement the NCIAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html FOREST RANCH (Depth, in) PIF NOAA Atllas 14, V0111.11ill 6, Version 2 1,3", 1 '1113O'cl Location namie: Forest Ranichi, California, USA' -2 2.33 Lafltude:� Longltude� -121.,66,551' Elevatiom 2682.5 ft" *-40 1 3.17 L2 4 5 SGUIM. E21RU Maps F Mr ]F MM, " FoLrae lj3GS 1.92 2.22 POINT PRECIPITATION FREQUENCY ESTIMATES 2.92 2-il. P.n-, IS ... ` l as raCr Heim, Lillian IHiinier azijngu klailaris, DallmiraF, Va,,t, 2andrai FaMiz 71e. Is➢Tamil R.Dy Ca�i T,yp -gill sk, G, -=1a Unruh, FPi-,ig1,n 'ran tfifi& a 211 Ypkta Tgn Zh9c, Geoffrey (1.08-149°, S�inln l 27emper. L, -Chuan Clneq, lye FlarzybDlk Jr [,n f'arohoan 11154..- 27°, I (1.99-2.657 NQAA NaboS ia, ApaLheT Sarccp Sdve, Sjjprl^ g kllwylard (2.31-3.72;' (248-4.22( IPF labdar II LF gLgghk2l II Ldlal,2i & aerial- e6a s- {279-5610 (290-1532;1� �PIF tabular PDS -based p6int precipitation frequency estimates with 910% confidence intervals (in iinches)l IF- Averaae recurrence hterval (vearsil I I -[ I - �F_0.219 1�0.189-0.2 710--7W,1 1(0.2E�9_0.3 15F _0379. I 30_lnllll 1 1.517 I 60-inin I - 0-699 2 -hr i0 1 0,0 - 1 a5024 1,3", 1 '1113O'cl o- L 15 11_)_JL1_7c -2 2.33 2.58 -3 83 21$364;1 - 3 4:,J 1 3.17 L2 4 5 3.43 2 3 3 F Mr ]F 1.26 1.55 1.92 2.22 2.62 2.92 3.22 3.53 $.94 4.26 23577 - (1.08-149°, 11 33-1.93°, 11154..- 27°, I (1.99-2.657 I (2.13-3.257 (2.31-3.72;' (248-4.22( (162-4.79 {279-5610 (290-1532;1� Whr 1.9-,1 F2_.2._3-6._F2_.2._93. _.3.3-8. 9-85� 4.143 _._4_8-8-. _5_.9_5 6-42 ]F( 1.642. 02271750-346'i 12954347 .3. (3234.9 (375641( .53-4 (387241 {422848p 6 1(437-953,1 P_2hJ -3 63 4 61 5 3q 6 42 7 20 7 97 78 0. 8 74 9 1 1 (146-3.37� IF3 11-4 280 I (3.94-5.45� I (4.56,f,.447 I (5.22-7.W I (5.71)-3.17� I (6A3-110.5� I �13 51-M% �j �13 93-13 % 19-�5 3-dayIII 13.4 3) 16.3 8� (15.2 1511.1 9� �j 20.6 J� 2.8 III251.8 2.1 (5 2-7.78;', 0 I �T6113.1� I �9.9171-`13.3� II {jj S-15 .2'-22' 6.6-26, 1 (1729-2297'1 34 19 5- 9b II {206-39?) 4.02 1 �3.52�4ffl� 5.27 I 6.86 I ft98-8,133", 8.14 9.82 1117 7712.4 9 95_1570 13.6 10.7-17 7-d 15.4 LL1 -7 ( 16 67 7 I032 2 --,3 -z-,] FT,7i,T4 - 5.55 8,6-6.48 � 7.27 I (6.36-8,.49� � 9.4.9 I � G 25- � 1. 1 113 1 (9.715-1 3.3� � 13.7 I � 11 5-16.6) � 15.5 1 (12.7-19.21 � 17.3 1 (1 19.1 1 (15.0249? �j 21.6 { 16 3-29 20(172323;1 23577 - 3-dayIII 13.4 3) 16.3 8� (15.2 1511.1 9� �j 20.6 J� 2.8 III251.8 2.1 (5 2-7.78;', 0 I �T6113.1� I �9.9171-`13.3� II {jj S-15 .2'-22' 6.6-26, 1 (1729-2297'1 34 19 5- 9b II {206-39?) 10 -day 11.0 '14.3 1� 21.7 26.0 29.2 32.3 35.3 39.4 42.4 (9.59-12.8"i (12.5-16 .7� (16' . I 1 8. 2 5 1.6� (18.8-25.67 (2 1 .81-3167 (24.101-315 (26.0-409p (27.7_4150} [297-532k k0-591.1 14 6 19 24 5 287 34 1 380 418 45.5 50 339 �[53.8: (123-17.N (16.6-22.2� (21.4-217� (24.9-33.9r (2615-41.57 (31.3-47.1p (33.7-53.13p (35.'75921 {'360-6300 3-75lj� 17.G 22.q 213 34.3 40.5 45.0 4 q�. 3 53.4 58.7 62677 �15n4-20�6� 120�13�267� I 125�15_341� LLi2'9.7-_410.4� 34.1)-_49.21 37.G-_55, 70 33.7-_62.40 4419.69.51 {44 4-79.4b l;45 F-87 3,j 21.q 23.2 35.841 41.6 48.8 53.9 5$.8 63.69- 52 5 69.5- 73.8 (ia2m25.5,� �24�15_32�9� 131 254i LLi3,15.13-_49.13� 44.4-_615.8� 47.6) 4S._31.E� q3 9�]L� �.0-1 0,3 26.2 33.3 42.0 48.5 5,63 62.3 67.7 72.9 79.4 34077 �22.9-313.5� (2,9.1-39.9� I (41.9-57.1N (47.5-o&9.7N (51.3-77.21 I (57.2-94.91 �j ,59.9-1071I {131 5-r17) Precipitaficin frequeiricy flPIF°i estimates on this, liall are abased or frequer)cy all Of Padlal (11.1rakill SerreS REIS). Nuirfibers iin parenthes,is are FIFeshmates at lio,,vaer acrid upper bouiriclis of the 901%. coinfiderce interval, The probabitity that precipitatinii freql.JeIICeStll'nates, (for ,a given duration and awelrage recurrence rrterval^, wlill be g1realef 11han the upper 6OL111,11 (Or ieSS thall the l0iNe11 ll is 5% Estimates at upper l are indcil against probable li plrecipitaficin ilPPAIP} estimates and il be higlroer than cmirvenfly valet IPPr1P values. Please il NOAA Atlas 14 dOCILlil for i Pinficiii Butte County Improvement Standards; Rainfall Criteria D-1 D 7.51 �&57175� 9.80 I �84� 12.8 I �11 114�9� 15.1 LLO_3.1-17.9� JLJLL .3 1594$-22.2) 20.72.6 17.1)-_25.6� JLJL... 13.6-29.30 _ 20.1-'3321 _. J 28.8 (212$ 21 01229143.7;1 ............ 373 - j FF-9. T,i;-y -5q-7 1 840-M2) F -1F-1 I (10.9-14.6� 65.2-77-2 I 11411-1910}I (1&15-22.6� 350_7 I 0.1923-28100I 7-2 5-.9-7 �21.3-32.1� 7-2F_156_7� I �23.1-36.4� I 824133.41.1� �1�267-478� F-3 -5.4-7 F-3-8.2-7 (26 0$-53 3;1 10 -day 11.0 '14.3 1� 21.7 26.0 29.2 32.3 35.3 39.4 42.4 (9.59-12.8"i (12.5-16 .7� (16' . I 1 8. 2 5 1.6� (18.8-25.67 (2 1 .81-3167 (24.101-315 (26.0-409p (27.7_4150} [297-532k k0-591.1 14 6 19 24 5 287 34 1 380 418 45.5 50 339 �[53.8: (123-17.N (16.6-22.2� (21.4-217� (24.9-33.9r (2615-41.57 (31.3-47.1p (33.7-53.13p (35.'75921 {'360-6300 3-75lj� 17.G 22.q 213 34.3 40.5 45.0 4 q�. 3 53.4 58.7 62677 �15n4-20�6� 120�13�267� I 125�15_341� LLi2'9.7-_410.4� 34.1)-_49.21 37.G-_55, 70 33.7-_62.40 4419.69.51 {44 4-79.4b l;45 F-87 3,j 21.q 23.2 35.841 41.6 48.8 53.9 5$.8 63.69- 52 5 69.5- 73.8 (ia2m25.5,� �24�15_32�9� 131 254i LLi3,15.13-_49.13� 44.4-_615.8� 47.6) 4S._31.E� q3 9�]L� �.0-1 0,3 26.2 33.3 42.0 48.5 5,63 62.3 67.7 72.9 79.4 34077 �22.9-313.5� (2,9.1-39.9� I (41.9-57.1N (47.5-o&9.7N (51.3-77.21 I (57.2-94.91 �j ,59.9-1071I {131 5-r17) Precipitaficin frequeiricy flPIF°i estimates on this, liall are abased or frequer)cy all Of Padlal (11.1rakill SerreS REIS). Nuirfibers iin parenthes,is are FIFeshmates at lio,,vaer acrid upper bouiriclis of the 901%. coinfiderce interval, The probabitity that precipitatinii freql.JeIICeStll'nates, (for ,a given duration and awelrage recurrence rrterval^, wlill be g1realef 11han the upper 6OL111,11 (Or ieSS thall the l0iNe11 ll is 5% Estimates at upper l are indcil against probable li plrecipitaficin ilPPAIP} estimates and il be higlroer than cmirvenfly valet IPPr1P values. Please il NOAA Atlas 14 dOCILlil for i Pinficiii Butte County Improvement Standards; Rainfall Criteria D-1 D Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: https://hdsc.nws.noaa.gov/hdsc/pfds/pfds map cont.html MAGALIA (Intensity, in/hr) PIF tabular PODS -based point Ipreciplitation frequency estimates with 9101% confidence intervals (in inches houir)1 NOAH Atlas 114„ Vollunme 3, Version 2 DE SA,BLA Average recurrence interval (years)r�rlrat�1F_T_T_T_7F Station IIB 04-2402 0 , n �^,�,,,^�"SN 4 Location naul3e Il�agalia Calliiforllu a„ ILUSA'" Lat'utuude 39.6717 Longitude: -121.6103' , a � k TIT' " Ellevatlon nl ft-rxtin 1 Elevation (stadon, nmetadata)l'2710 ft"(1111k z sca.aa� �� 5.� 5 sa s source, HIR, n"r.a:ps 11,69232) f2C3 263( :a JL^rCE'. lj2 G.S 12.:.6741037} f325497 1352566", (376641) f39TF24} 142n846", 14,34'346) POINT PRECIIPIITAMN FREQUENCE' ESTIMATES 1.g4 San,p Fehoa' ;Sarah IDiinr2' Sara4r Maim Lilkin Miner I a ungu Pulariariia:, Cahnxah VnI n, san+.tira IFevlc "uc. Islani IFoy Cad T•ypallLk, Dale Urrutn, Herd n'rar, V iii&aell'r"ekta. Tan 211�a, Geoffrey Sornln, Daniel IE3rewer, LI -Chuan Chen, Chen, lye Parzyloolk. Jdl=.n 'Ya.rohoan 11.36 1.97) NOAA, Na¢rcaas Ae-arher SeFvcp Sdvea Spring, 141-airylaind 7 7' 6� 94 � 9�'i 1�.3� 3.29) l_ 92 4 991 6� 94' 3 20 5 946 63 39 9" 1 3.,50 7.64) 7.., ' 7 4 56'7 (3.03-5.17) (3.210-5.M PF tal:-Warr I PF grraRhji r7l I Ma10, & erlialls 1 t18 PIF tabular PODS -based point Ipreciplitation frequency estimates with 9101% confidence intervals (in inches houir)1 Average recurrence interval (years)r�rlrat�1F_T_T_T_7F � �� n 25 5o1 1104 200 7 F -m -o7 Fiow 2 75 3..35 13 75 5.57F-6-1 9 6 82 7.44 28 '92 5-ttll1,, (2.35-3.23) (2.97-3.95p 99", 553191 597t1Ep 63 53 4 (4.01-5.69) .4 52 s 94� _4 91 ' 90"r (5.245.95) 15.0619.2?.p.. nl ft-rxtin 1 �.r� z sca.aa� �� 5.� 5 sa s 11,69232) f2C3 263( 1253350", 12.:.6741037} f325497 1352566", (376641) f39TF24} 142n846", 14,34'346) -15-a 1.g4 2 3E 2 74 3.22 3 58 3'94 4.30 A4 78 5'15 15-Ixtin 11.36 1.97) 7 7 11 96 � �9r 7 7' 6� 94 � 9�'i 1�.3� 3.29) l_ 92 4 991 6� 94' 3 20 5 946 63 39 9" 1 3.,50 7.64) 7.., ' 7 4 56'7 (3.03-5.17) (3.210-5.M 1 t18 1.32 9 63 1 �& 2.20 2 445 2 69 2.94 27 52 3U-rxtin 1,n.939-1 261 f 1 13-1 5.6r q1 39.1, 93} 19-3 99p 12 32.4 66} 1,2..40,-5.231 (1.59-2 24 L1_7 9-2.74p q1 94.3 12} 112..07-3 541 f2.19 -3.99',j 64-111Y11 77F p&5} i]fi 996453) f9756�i5dGf Q0 }4i�i 3G", 1 0721752) 121 't 31-2 11 O-2.39) (146-2p7df it 57-3 i5", 11 G2-i�53) 10.521 0.644 798 70.920 1.0� 12t1 131 1. � 158 1 T -hr l0 449 9.6t4) r9 55r � rs9r 60 991 0 944", l0 7791.10) 194791 30 60949153", 11.01 1.73) 111091.94' t1 1a 225", 11.15?.52) .. -hr za0�1113r �1 0 3873 9 t3) 1;9 463 0 636r q0 58 M1 9 nu", 10 s E 9 9 ') 1'a q sna 2n", (0 ,51-1 45) 1'a 495 r0 63r q a4 - 9N In 968-22 11� 70.330 a.4t4 519 70.601 0.77)7 785 70.861 4.935 1 613 11 -tt r 0 793 9.3651 r9 3 0 4°N 60 443 0 6t4", l0 5.. 99 9.7t9) r9 574 979r 60 92 1190", (0.6&2-1.13) (0.696-1.27r 60 32 147", l0 7152'A .64) 645 �1 6 12' -her as q;_I 0.780 9 2651) 1;9 2 3 9 75p 10 3 d 9 65y 1;0.44 574,} 1;9.467595 tsr 40 2r 1;0.5 6-9 9"rl ra.5618��06 10 24y 6 1r... 20 -0.7-51-, 2d-hlr 0.105a 9 2nfl1 r9 �m 2ssr q0 266 a 357y 1;0.s�5 9 45nr) f9.3f71-0.536p q0 40r -0 62ty 1;0.49 987n6 1;9.464 0 n2r q0 5 3 a 9a7y 1;0 -1 05t 2_uRa Gl 119 0.159 � 210 0.251 �.��6 79 � 348 0.3951 0.433 � 490 0.533 10 164 0 1354). 1�0 139 9 16Ci4 QO 163,0 24V3'o- 10 2i7 0 2,.113),,, 1�0 �5 3734 QO 26i 0 43�. 10 3i4 0 4,.15 1�0 339 9 SCi34 QO 370 0 6V3�. 10 3,96 0 44?.. 70.096 0.1_27. 0 1167 10.200 0.244 0 277 0 311 0.345 .. 0 70.427 3 -clay .392 {9 034-01 112) 617 11t 0 146, 60 149 0 1913'r l0 173 9.2.343 _ 2 l;9 y9 9 �96r a� 60 �29 0 344'r 259 0.3914) l0 �. f9 271 9 449r 60 799 0 529'i l0 312 9.596r 7].081 0.17]7 01141 7].169 0.205 0 233 7].261 0.290 0 7].35$ 4-cRa .�28 1,n.071-9 9515 (9.994-n.'125p q0 123.0 1656 1;n.146-9 1515(;) f9 172-0 250p qn 192.0 269"r 1;n -2'1n=-9 3311 (9 727-+9.377p qn 24� 0 4441 1;n-761-9 45151) Clay ��5 9461 0 00--00 94551) {,0 966 9 992( QO 069 03120", 10 195 00.122 1024 9 1 79( QO 17 0 206", 10 1�9 96235) {,0 15 GG4 a0 tl174 03 11 d 10 162 M -d y 02048 09 ID 09 009 79 194 90.063 1 0 973( QO 00 1146 {,0 996117 9 1 42( QO 196 0� 63", (0 t4b.14685 {,0 146-0.2' 4 QO 15 az4zr 10 11F 0 27 1 N 0.042 O.D55 70.064 0.077 O.D36 70.095 0.104 0.115 70.123 day0.032 ') � l0 029 9.03-) . r9 937 � 949r 60 949 p 994", l0 956 9.9-r, r9 994 � 99:6_ 60 971 0 10�, ", 76 9.r4n) l0 0.... f9 99r 0 1a5r 60 997 0 155", l0 9,99 9.r-4) ��_et'ay 09.0 �9 1;0 o 28-9 05nr) 1;9 a3sr q0 0�3� o n5ty 1;0.94 045nr) 1:9.01°0 a74r q0 056.9 n"64y 1;0 oca 9 0s14} 1; 9.96�0�1n5p q0 06r�9�i2ty 1;0.974 9�55rr 45-cNay 10 07199r2 �9 932( q0 0.035 00 940, 10 0�6 9 9451) 1;9 9109 95gf q0 0� �0 967, 10 0�6 9 975) 1;9 9r59 9 96,3( q0 0� �0 995, 10 0�`�9� r15) 70 019 0.025 � 031 7) 03fi 0.042 � 047 70.051 0.055 � 060 70.064 0 day O.017-0.022) r9 92r 979_ 60 027 0 060", (0 031 0.043) r9 939 952r 60 939 0 959", (0 941 9.ur55) f9 943 0 977_ 60 949 0 997", (0 944 9.99x1) t Precipitation frequency ¢;IPF) esfumates in this fable are based an frequency ainaty"sis of partial tfuratucur'll serees (PDS). I%firnbers in parenthesis are PF estimates at lower and upper bounds of the 901% colnficlenre ilnte,rval. The probability that precipitation treyuerocl eslirna7es Qfor a cgiimen cluralloun and aieracge recurrence untervall),miill be greater than ihe uppelr bound 4.orlessthan the lower bound) is 591h Ssflmates at upper bounds are not checked against probable maxnnulm preciprtatiam (RAIP) estirnaies, and may be higher than culrrently valid PAP uatueS Please refer to NOAA Atilas 14 cdocunr�ent for more rnformatian. Butte County Improvement Standards; Rainfall Criteria D-1 E Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: https://hdsc.nws.noaa.gov/hdsc/pfds/pfds map cont.html MAGALIA (Depth, in) NOAH Atlas 114, Voluilnae G Version 2 r3 ry w Loeatdcln nanaae IMlagalla Cellnfforniav ILuSA" �^ Latltrrcde: 39.€1'443 Laangutucde: -1121.5954' Elevaklena 2'522 92 ft" r d ry � . soulr.- ESR, r aps ,rvy,,lw Four Gey'. U27GiS x r POINT PRIECIIPIITAMN FREQUENCY ESTIMATES Sanla, Feria, ,Earah IDiafta, Earatg Heirre Lillian Higier �ZIZun�gu hIaliariia, Li'+a1�Ir3h Varlin ^Zandrai Im'svIc rle. II=s`. 9211 R©y Z:e:l'Trrrpaluk, Dale ULnrurn�, F'eingl n vantiiallsaell'r�kta lfan Zlxao, Ger ffrey Eann;rr, (Daniel IErewer, LI Chuan Cll,en Tye Parzybdk 7iol7n Y'arahoan I13AA, IWarcicnei'2da?.rherc arwwa :k."ee Slproag. rutarylaarmj PF iabuullrarr II EF gLaphiLal I rORI,2; erll lls PIF tabuladr PDS -lased paint precipitation frequency estimates with 90% confidence intervals (in ilnches)l F.-tirn Average reCUrrenlce hiterval years 1 2 5 1tl 25 5011 fii00 299 5tl(1 1d➢0f.Y � � � 0 I 5 mina 0.225 0 278. 0.345 0.401 0.475 0 532 0 5901 0.649 0 _7-2_q7_0 _79_1 0 193 265', (0 238 0.327'1 (0 755-0.4651'1 )0.339 4751, ('0 3& 0.592) f0 422 0.679'1 454 0.'t 75'1 (0 483 ��� fr3 517 1 �74p "r3 535 1 1Ep .. RO-n>Ir11 0. 23 ('0 2T7 0 3861 0 398 ('0 341 0.469'1 0 496 (0 423-0.58�5'i 0.575 (0.4&6 0 697;( 0.602 ('0 553 0.948) 0 763 ('0 004 0.374'1 0 545 (0 (351-1 11) 0.g31 1 (0 35'2 1.213) "1.05 1011741-1 430 11."13 011772-1 600 R5-na n11 0 90 f0.'335 0.466;) -0.4-877F -0.5-99-7F c 0 761'1 0.695 90.589 O.Ba'fl;( 4.624 9 0 g23 31 1 19', 1 02 I (0 797 1 347 1,13 90,337-1 53) 1.25 i11� 090 1 900 1.37 "i1 933 2-040 3�i-nmlln 0'534 {;0.4530620 6 (056407'„a6, 4� X19 (0700,099 ', 4�.g (Op031.1 ) �.�3 (0.(915-1.46", .26 (0999T6rr", 1 4a 1108194} 1,54 }1.15 -?09', 73 (I2?2471 �. 60-na 1111 0.720 70-917 9.947,) 0 887 (0 7&G-1 05"7 1..11 19 943-1.31} 43 7 31} 1 28 r1 69 9.537 1.52 (1 23-_1.99"r 1.70 (1 5 177 1 89 1 45 2 49,E F-2-08 �,1 54-,2 8.21 2.33 (165 3 '2) 2.53 (11 72-376,( 2-R1r 1.03 (0.9661.22, 1.27 1091507 1.50 (135,167) 1 82 {1542.19'; 2.15 175-2.66"+ 2.40 1903067 2 55 (204 348} ..(2554315} 2,91 216-'395"+ 3.25 1;2.37-463) 3.51 (239521,i -Har 1.30 0.1.12153', 1.60 1371697 1.9g (170-235) 2 2g (194274'0 2.70 0.2193.36', 3.01 0.2363647 3 32 3 63-7-4.05 I (270493', (237577) 4.37 (297649,( Hap 1.98 1.69-2 33°i 2.44 0.7 09-a &9p 3.013 I (159-3.59) 3 5.0 (196-4.191 191 4.13 0.3.35-5.13°i 4.59 0.3.64-5.8,8p 5 05 (199-o&.64( . 5 52 14 11-7 500 614 4 35-870) 6.62 (4 50-963,( 12-4t1 2.96 2. 'z 3.77 0. � - 7 4.74 - 5 60 � - r 5.57 0. - � '� 7.47 - 7 8 27 � - 9 9 07 1675-123°i 10 1 (717-t44) 110 9 (744-t62, 24-4t1 (3. 41685".. (4 7-67.387 1E35) I'7 $2-S,.K" 8957-12.4"i 9S'49-14371 28 2 1111-1640 159 (120-211 5) 17 3 1 (126-24 1 2 -clay 74 (5. 20 691 75 (6 79 79: 82 6:11 9,( 1 f-1➢1 13.9"r 11 9 11 2 b 160 9 13.2 19 6} 17 g 14 4 22 7',� 1 q 1,15 5-,25 tr 22 3 (168-302j) 24 3 (177-339J . 3 -cloy k b 89 0.2°.04'0 0.94.... 8610. 0 19.7 (102-137) 13.4 {12)16,.4'+ 1G.E 14.1-205"1 19 ^N 0.15.7237} 21 3 } 7 i1 2 0' 23.6 1,19.5-30 r^, 26,,7 (2G 1-35.1 j 291 (211 2-40 13,i 4-cda 7 (0.60 907'0 6 650 11 u) (,It 5 15 4 15.6 13 5 16.4'0 16.9 0.15.9-23 0 "+ 214 0.17 6 26 5 } 23.q I (19 2 39 3}(,20.7-34 ..232&-36750 26.4 4'0 29.8 (22 5 46.31 32..4 (23 7-45.2,1 7-cday G .g 6p 1113-15..1) 6.7 (1416-196) {1711-233"i 3.7 19'29 &&Y 6.6 0.219-336} 2.5 2535.423y !275- 92) (?6 957} ... 1 d -tRa 0.992.132".. F -1-1-37F148 0.129-17.:.27 1 g 1 166-223) (194-264".. 22.4 26.8 0.225.3'26} 30 0 0.247-3730 33 2 767-421y 36.4 (265-474} 40 5 (36X5-546) 43 7 (3 0-61 7117 200-tRay 15.2 0.1133.17.7'10.17.2-23.1 14 7...25 4 7F }72.1-797) 2g.7 7F (25.'7-35.0'1 .35 .2 0.266.4'2.9'1 34 3 0.3-.3-4&77 413 2 ,. }34.7-547 47.0 36.&-61.1'1 51 9 (391-7+02) (4CX 5 77 5 300-tiRay 18.3 (16.0-21.4'1 23 8....30 l20.9-27.97 4 26.5-35.6) 35.4 I (130.7-41.&'i 41.8 I (35.1-50.9'1 464 Q&2-57.67 508 40.D -o&4.5( 55.1 I (43.2-71.&'i 60 5 646 45-4Ray 22.7 ( 2g 2....37 _ 1 - 43.0 (37.2- .7'r 50.4 - 9 r 557 607 1 (41&-77.0) 55.6 (51.4-95.3'7 71 7 1541-969) 75 1 556-1P6r fio allay 7 27.2 (2&31.8'1 34 6.... (30340.57 43 5 37.9-510) 5.0 .2 I (43.459.3'1 58.6 I (43171.27 54 4 (53.07997(56.3-,H.7 70 0 75. 82 0 I61311'flr 85 8 034121 1 Preciplltat ori frequency d7PFr estiimates in this table are (based an tregUelrrcy anaNysls Of 1par'tlal cluraficin sene.s TDS). Numbers in parenthesis are PF estimates at lower aincl upperbounds of tlhe W% colnfKlenne llnierval. The prolbab`xihi,7 that plrecipdation f'recyuer)U+ estimates (fcir a liven 5u1 ation and average reicurrerce unielrsalO will be Ngireater than 11he upper bound (amass thaln the lower boundis 5% (Estimates at upper bounds are notchecked against (probable (^namirrruran preciioitaticon (RMP, estimates and n^la^y hie higher than currrelnfly valid IPi'+wr7P values. Pllease relent, NOAA Atlas 14 curcurrnelrt for Irnore rnifcrimation. Butte County Improvement Standards; Rainfall Criteria D-1 F Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html COHASSET (intensity, in/hr) NOAA Atlas 14, Volume 6, Version 2 gym,ILocation iI Chico, Califoi-nia, USA* 9 V, Latitude. 39.,9,06', Longitude :: -1121.7362" source ESMIR I IVaps, Elevadon� 2320.94 ft" SnL' Ce USES POINT PRECIPITATION FREQUENCY ESTIMATES 23rO Fm6sa' Sarah Dlet: s3ra)r I LkIi an HigeT, 11'13ZIJnDU Nla!113ri a, CeIcoir3h V31, n Sanrjira IF aw I cvlc I sli,aiii Rny Cas l T,ypailluk, Dale Ur,un, FNrgll,r 'r ars_ hlid,asl Y'ekta Tan Z11c, Geoffrey Ec,in,n, I I Li -Chuan C_11,en, 7ye `3rzybok, JiDlIrn Yarchoan I Naborai 'Npalher 2PFv,),;e -Ave, S11:n9g, Maryland PF i! a bda r II E F_grata Laj II LO i 12i Leerliall �PIF tabular I PDS -based r)oint Ilareci6itation freauencv estimates with 901% confidence intervals (in inches1hourl ` Duration Average recurrence !Interval (years) (117-2.990 0.2.70,-3.710y (139-4.670 0.449-6.950 (493-7.934 85 35-9 ll0 (574-110.44 QS.19-12.4y (649-14.1 i1 55 _ 13(1.93-2.65� (2.42-3.35� (2.8,13-3.95� (3.22-4.90 (3.54-5.684 (3.93-;5.53� (,4 il-743, (4.43-8'.W (4.&6-10.10 15 -IR 1111 (1�26.1�72y �zs-3 18� 5 - 3 _L3.58-7. I S',j 3 75 9.17y j �2�8, 48'� 3 og526�5 (! � 31 S G 3 � � [ I (! 2.,17 2.17358� _1_03 3-43 3.75 i0.E5471'p 41061.F (1.33-1.84� (1.54-2.17� �1.77-2.710� �F 2.4512) 11-3 1 !42'6 -4 11 (2.44-4.W I (2.56-5.570 _105_�F �c4-14E� _123 _147 _165 _184 _204F j _232 2.53 ILlA9-1.92(j �1�31�2�1104 �[ 1.42-2.429', ilj,2277� 1.64-_3.3G',j 72�3�754 _7F_ .738 -7F -O. -7 1.0271 1.14 7[ 1.2771 1.40 1.158 1,72 �hir 0.482 .594 f) (0.7285-51602� j[ (0.32&-1.26� I (O.SI04-1.45� I (O.S75-1.W 12-2.25 17-2.5q�0 _3 -lir 0.405 0.497 0.615 0 711 0 841 0.441 1 04 115_�F _129�[q 1.41 110�349�0�477�� LO 526 0 727, o ft747� 1 �2014 �L Loa_c_4_13_7,,J1 asq6- 1 �5,64 �L Loa -1 -7 -la -4d S59�2�W j LL 308, F_T_3777_7� _0 _0___ FTh, 11 0.4136 0.538 0.1334 JF F .859 7F 9433 7F 1.05 110.561-0.9020 (0 603-7.M I (U,410-1.170 I 10.683-1.37'5 I (0.712-1.551 D�T,96-02W 0.228 1O 246-0.3964 110445�0�7151 0.1312 L(OA79-_Q.915',,j 1 a5 a 6 1 �2'3 24 h11 11 '). 162 �F (0.142-10AW� 0.210 I �0.1 54-0.245�� F 0.271 7F 1 (0.236-0. a M� 0.320 71 I 10 _r7-0.37+'0 0.385 I f0 323-0 0.4337F-O-4-82-7F-O-.5-32-7F-0-5-1)8-7�F I �,C 383-0 �0.452-0. 907�� �� 0.648, 475-D.DGC 2 -day 0.112 1 0.145, Ip 10 10.181, 19�$O 192-0 0 222 61]�O 0.267 � 1 0.302 0.336, 0372 1 0.419 40.465 1(mM-0.130Q�J�OA27-0.169 64-0 2' 9'2-0.2 2250.325��1�0.249-0.374 10.0 333.0 Fa.a89 7F-0 1-1 _51F -o _149 0.176 Yo _21_2T_0_240 7F -o 267 0.295 o.333 0.361 FT,jTy ]F -0.0-75-7F -0.9-97-77 -0.1-26-7F -0.1-48- -0.1-79-7F -0.2-01-77 -0.2-24-7F -0.2-47-7 0.278, 0 066-0. 0.302 1(10,87��1�10085-0 114]1�6 Y]F-O _055_�F_O -071_]F_0 _091_�F_0.107 ]FO _128_�F_0.143 �FO _159O _174_ O 4] -19[0 10.210, 54 -0.29251a -day i0.O8080051} 10 09 0 0664 1,006 0085 1]00900!} f0O850.11 3", 100931O140p � 0 - 1 63 7 __7' PZ�q [13 r`19 -0227J 0 1 '5 �17 0.029 �F -0-0-38-�F _0.0_48_�F _0.0_56_�j 0 .066 1 0.103 , P-011--y][9.025-0.03C l�0.033-0.044��l(D.042-0.056��l�0.049-0.066(0.0q�,6-0.GP,1069-01 114flj(0.073-0.130�� 076-0.14C� 089j[(47 90 07 5 0.030, 5Q 1 G24[13 C [45-d.yjj apig 0.025 fuwi-0 36 F ) 042 T .047 �F 51 �j 0.055 0.059 0-063 D. 0. 22- 0. 0 29 (0. 0 27 - 0.03 7 � ( 0 17-0.0,23 0 ( 0. 031-0.043;0 1 (0. 0 3 5- 0.0 5 0. 008-0.0&8r (0. 041-0 0 6 4 0. 0 43-0.0,7 flr h0 045-0 � � [6a-cNaj]F_O 0-17 7 =F -O _02 7 7 �=F_O 1-17 7 =F -0 -1447F -I) 0-47 7=[0�00.054 1�0�0151020�� L,9_024 0 0321, 0 031 0 045, 39-0.075# Precipliaficir frequency (,IPF °r esilmales, in this table are abased an frequency aiI ofiparlial dffakill SerleS 7.PDS4. Ulrl bers on parenthesis are P[Fesfiliates at voef and upper hounds ofthe 3V,6 coincidence interval. The probabiliiy that pireeptation freqUaRCY eStIII 9fcir a Ven duration and awerage recurrence AeiI 1I g1reaiell iII the UpPell 1DOLInd Tor less than 1Ihe loweir bouiqd� !is 51,�., I at Uppell, I alre II necked against probable maximum precilpitation 1PNAIP) estimates and rilay be higher ilhan C1.1111I Valid PIAP rrallnles. referici NOAA Ailas 14 dOCLHI for Iron unfclrmalien. Butte County Improvement Standards; Rainfall Criteria D-1 G Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html COHASSET (Depth, in) POIINT PRECIPITATION FREQUENCY ESTIMATES 7aija Fmfica, Sarah DietzSara)i 14eann L,lhin Hiner Kazizngu rvlsllarlg, Gall rd sl n snrdrai -evlcwlc ls,iail Roy Zai Trypaluk, Calm Jr,un, FsrglLn ran Vidh3nll 'w4k.ta 7gn Zb,ac, Geoffrey Rehm, ICaniel ]?,Fwpa, Su Chuan Cl n, -ye Pirzybok Joln (arhoan NOAA, Nabcr3, V,aather Seircsa SprMg, l PF tabu�,Rr II EF_grap iLcal �� LOalLs � aerllells _ _ __j �PIS tabular PDS -based p6int Iprecipitation frequency estimates with 90% confidence intervals (in inches)l I—Averagerecurrence interval ��years) 1_17 E=�= [== P= 25 :::] �R= K:::1 E:PL::1 EAK:::] EINE 5 nllnnr 211 0.262 0.329 -0.3-8577F -0.45,60-7F -0.5-19-7F -0.5-79-7F 0.641_7=F_0._79_5 V, (0.4r1 -0.601i LO446-.75q�, LO479-0.913q', 41:1 1721. 0 302==F�o-,51 =F�o.74, F_�,).329 =F_ t.147 P�F259 0 _] LD 467 0.55'6y 0 590 0 947',]LO ' .39 1 09y]L�, 295 1 25, 7, �1 6si� ['0 7 6 �F _03-65-7F -0.4-54- -0.5-777F -0.6-67-7F -0.7-98-7F---- 1 -3-8-7 _1 51 � [01 81.26 SO]F (10�772-1.32r I (O228 94-1 l(O 93-2 044� -34-rrnin 0 497 0.619 0.770 0.400 109-77 1-23-77 1-37-77 1-51-77 1-7-27F1 E8 (0.769- 1.W I (US 384-1.35r I (O.S71 - 1.5W I (105179r1 1113-2l I {1.22245) 1 � 1 28-2 781 -0 G-7 1] F 0-8-3 _05_� 1-4 7� F 1-6 5_� F 1-8 4_� F 2-0 _2� 3� (x5660. - 86 r� 1 (0.7 1 &- 0. 962 (US 397-1.214 (1. 0 4-1.46� (1. 19-1.92 (1. 31-2. 10 (1.42-2.42 1. 52-2.77 1 64-3 30) 72 -3 75 F2 hIr (0.828-1.13p (1.02-1.40} I (126-1.74y I (1.45-2.04y (1.81-2.90r (1.95-3.32r (2.108-3.79r {224-449) [2 34-5 10p Fhlr f1.05-1.431 (118-1.76) I f16 -3.W 124-3.W I (2 41-4 11) .4 {276.553 [8-6 27� [6EF _185_�F _226_�F _274 _�F _322_�F _380_�F _424_�F _418_�F_577_]F _626_� f159 661 f4r 0.:3.83-697P 22) [��F _275_�F _346_�F _436_�F _508_�F _604_�F _676_�F _74q_�F _823923_][6 101k (2�37�3�24� L297-4.07�L373-5.15�j[ 430-�&06'� 491-7.W 536-8.61� 5 77-13'.8'2 � 6 L3- 41.2) L,3 55-13; J) 32-`14 a I Fj 9 [111452"61 7 43 F I (3.410-4.5,3� (4 00,5463) I (567-7.61� I (&64-S.05� 1 (77:5-11.2) 1 (&57-12.9� I (S32-14.7� I ilO.l �F 18- 19 4) [�aF _53677[;W]F _900-77 1-0 6-77 12,8 1-4 5-77 1-6 2-77 1-7 8-7F-2-01 71�1621 " 8� (4�69m�&�2'5) � -2-27--1d o:30:5 cda _63q 77 -82q 77 10-7 7�F--l2-7-7F--l5-3-7F-l7-2-7F-lq-2-7F-2l-2-7F-2 3-9-1 26.0 5 � 6x � 7 � 45;) � U _7U U -a _35-,1-z _sU LLl _1o_1 -4%-,- 1 U 12.6-16 .63 (14 z 21 _43 U -15-s-2-4 _40. L 12.7-27 __&0.� IL, V23.9 _1 -32-3- J o:36 �3 2077�F-1F-1F-1F-1F-21-.5-7 2_6_J_1[ 29.0 FT,71,y I (6.310-8.39) �j I (10.5-14.1} I (12.3-16.8} I (14.4-210.8r I (15.9-24.l I (17.3-27.3r I (1&7-30.9r 1i2FJ2-361J[2`i2-404p � 917 F-1 159-7 F-15 .37 F-18 .07 F-21-.5-7 F-24 .17 F-26 .77 F-2 q-.3-7 F-3 -2,7-7 F-3 -5.3-7 FT,71,Y I (&103-10.71 �j (10.4-13.9) I (13.3-17.9p I (15.6-21.2p I (1&0-2&1r I (19.9-29.9r I (21.5-33.8r I (23.l 13247-441][258-4911� [j-0 ,d 7,Y � 10 -5] F-1 35_� F-17 .A� F-2 O_A� F-2 4_3� F-27 .2� F-30 50� F-32 3� F-3 _6,4_� F 39.1 1 �j (11:152,( - 1 (152204y I (17.7-24.1 y 1 (20.4-29.5 r I (22.4-33.6� 1 (24.1-3110 r I (25.7-42.6r I { 27 5-49 1) 1 [23 6-54 5p � 13 .9] F-18 50� F-2.5 1 _� F-26 59� F-3 158_� F-35 .A� F_3858_� F-42-1 _� F-4 _6,4_� F 49.5 ,d,y 1 (12.2-162) �j (15.8-21.1) I (20.1-27.10p I (23.3-31.7r I (215.7-38,7r I (29,.1-43.9� I (31.2-49.1r I (33.1-54.7� 1{350-626][363-690�� 5-4 3 ti1ay 14 19611511. Sar 24276 3'p 27.G_37_9'p 31.7-_45-9',J[ 3S.9-_,57_9',J[(3,1-.B-_64--'pj[L41l)-732)jl�42230445 ti1a �� -2f) q_�� F 26.7 F 33.7 F _3q 0_� F 45.6 F 50.2 F 54.6 F 5-8 q_� F 134 2] � 68.1 1°3213') 23.4-'.312) . j [ 234'.39.5',( . __1_L33s_4 _&c -L L3.2.3 -564r -__] LL4_14tF_,22-p_1 L44.0-59.2' --L 42.2-765'p __IL4_V134.2 _5_s,,_7_J 9 9: 94 9b 24.8 F_ 3-1 _57� F_ -Jq _57� F_ 4-5 4-7 F_ 52.8 F_ 5-7 _q7 F_ 62.E F_ 6-7 4-71 73.3, 77.5 (2 1 n 7- 29 a U_27_5_,3_& _aU U -34-4-4-& _2�J LoL3_5_3 -s-L U-44-3-fi-4 -1 L U-47-7-7-1 _73 U-50-6-7-9 _sL L(5.3.0-27 L5_5 _4 as -9d 056 . 7-'l o S Precip'liaton are based oRfiequency ainal,,�sisoflpartiialdLifat¢Cl,rlS8reeSdPENSj. Numbers in parentliesis are PF astinaies at lio'waar and upper hounds of the 9l coinfdence inierval The prolo a bill ity that precipiation freqL]18Wy esfiinares, (for a given duration and average recurience �nterval� wifil be greatlef than the upper bOUnd (or less than fll lower bgUnd) ls 5% EsIlmates, at upper bOUnds are not checked against pol maXIMUM pracpitafion (Pll e-finiales and nay be higher than curventIVvalkci PIMP Yallues. Please refer is NOAA Aillas 14 dOCUment for mare informarion. Butte County Improvement Standards; Rainfall Criteria D-1 H INOAA Atlas 14, Volluill 6, Version 2 S� Locadoji nal Chico, California, UISA' L'It iftlldle: 39906°,6', Lorl -121.7362" Elevadon: 2!320.94 ft" d W'Aix dl, source E21R, "qps . ". JSGS r POIINT PRECIPITATION FREQUENCY ESTIMATES 7aija Fmfica, Sarah DietzSara)i 14eann L,lhin Hiner Kazizngu rvlsllarlg, Gall rd sl n snrdrai -evlcwlc ls,iail Roy Zai Trypaluk, Calm Jr,un, FsrglLn ran Vidh3nll 'w4k.ta 7gn Zb,ac, Geoffrey Rehm, ICaniel ]?,Fwpa, Su Chuan Cl n, -ye Pirzybok Joln (arhoan NOAA, Nabcr3, V,aather Seircsa SprMg, l PF tabu�,Rr II EF_grap iLcal �� LOalLs � aerllells _ _ __j �PIS tabular PDS -based p6int Iprecipitation frequency estimates with 90% confidence intervals (in inches)l I—Averagerecurrence interval ��years) 1_17 E=�= [== P= 25 :::] �R= K:::1 E:PL::1 EAK:::] EINE 5 nllnnr 211 0.262 0.329 -0.3-8577F -0.45,60-7F -0.5-19-7F -0.5-79-7F 0.641_7=F_0._79_5 V, (0.4r1 -0.601i LO446-.75q�, LO479-0.913q', 41:1 1721. 0 302==F�o-,51 =F�o.74, F_�,).329 =F_ t.147 P�F259 0 _] LD 467 0.55'6y 0 590 0 947',]LO ' .39 1 09y]L�, 295 1 25, 7, �1 6si� ['0 7 6 �F _03-65-7F -0.4-54- -0.5-777F -0.6-67-7F -0.7-98-7F---- 1 -3-8-7 _1 51 � [01 81.26 SO]F (10�772-1.32r I (O228 94-1 l(O 93-2 044� -34-rrnin 0 497 0.619 0.770 0.400 109-77 1-23-77 1-37-77 1-51-77 1-7-27F1 E8 (0.769- 1.W I (US 384-1.35r I (O.S71 - 1.5W I (105179r1 1113-2l I {1.22245) 1 � 1 28-2 781 -0 G-7 1] F 0-8-3 _05_� 1-4 7� F 1-6 5_� F 1-8 4_� F 2-0 _2� 3� (x5660. - 86 r� 1 (0.7 1 &- 0. 962 (US 397-1.214 (1. 0 4-1.46� (1. 19-1.92 (1. 31-2. 10 (1.42-2.42 1. 52-2.77 1 64-3 30) 72 -3 75 F2 hIr (0.828-1.13p (1.02-1.40} I (126-1.74y I (1.45-2.04y (1.81-2.90r (1.95-3.32r (2.108-3.79r {224-449) [2 34-5 10p Fhlr f1.05-1.431 (118-1.76) I f16 -3.W 124-3.W I (2 41-4 11) .4 {276.553 [8-6 27� [6EF _185_�F _226_�F _274 _�F _322_�F _380_�F _424_�F _418_�F_577_]F _626_� f159 661 f4r 0.:3.83-697P 22) [��F _275_�F _346_�F _436_�F _508_�F _604_�F _676_�F _74q_�F _823923_][6 101k (2�37�3�24� L297-4.07�L373-5.15�j[ 430-�&06'� 491-7.W 536-8.61� 5 77-13'.8'2 � 6 L3- 41.2) L,3 55-13; J) 32-`14 a I Fj 9 [111452"61 7 43 F I (3.410-4.5,3� (4 00,5463) I (567-7.61� I (&64-S.05� 1 (77:5-11.2) 1 (&57-12.9� I (S32-14.7� I ilO.l �F 18- 19 4) [�aF _53677[;W]F _900-77 1-0 6-77 12,8 1-4 5-77 1-6 2-77 1-7 8-7F-2-01 71�1621 " 8� (4�69m�&�2'5) � -2-27--1d o:30:5 cda _63q 77 -82q 77 10-7 7�F--l2-7-7F--l5-3-7F-l7-2-7F-lq-2-7F-2l-2-7F-2 3-9-1 26.0 5 � 6x � 7 � 45;) � U _7U U -a _35-,1-z _sU LLl _1o_1 -4%-,- 1 U 12.6-16 .63 (14 z 21 _43 U -15-s-2-4 _40. L 12.7-27 __&0.� IL, V23.9 _1 -32-3- J o:36 �3 2077�F-1F-1F-1F-1F-21-.5-7 2_6_J_1[ 29.0 FT,71,y I (6.310-8.39) �j I (10.5-14.1} I (12.3-16.8} I (14.4-210.8r I (15.9-24.l I (17.3-27.3r I (1&7-30.9r 1i2FJ2-361J[2`i2-404p � 917 F-1 159-7 F-15 .37 F-18 .07 F-21-.5-7 F-24 .17 F-26 .77 F-2 q-.3-7 F-3 -2,7-7 F-3 -5.3-7 FT,71,Y I (&103-10.71 �j (10.4-13.9) I (13.3-17.9p I (15.6-21.2p I (1&0-2&1r I (19.9-29.9r I (21.5-33.8r I (23.l 13247-441][258-4911� [j-0 ,d 7,Y � 10 -5] F-1 35_� F-17 .A� F-2 O_A� F-2 4_3� F-27 .2� F-30 50� F-32 3� F-3 _6,4_� F 39.1 1 �j (11:152,( - 1 (152204y I (17.7-24.1 y 1 (20.4-29.5 r I (22.4-33.6� 1 (24.1-3110 r I (25.7-42.6r I { 27 5-49 1) 1 [23 6-54 5p � 13 .9] F-18 50� F-2.5 1 _� F-26 59� F-3 158_� F-35 .A� F_3858_� F-42-1 _� F-4 _6,4_� F 49.5 ,d,y 1 (12.2-162) �j (15.8-21.1) I (20.1-27.10p I (23.3-31.7r I (215.7-38,7r I (29,.1-43.9� I (31.2-49.1r I (33.1-54.7� 1{350-626][363-690�� 5-4 3 ti1ay 14 19611511. Sar 24276 3'p 27.G_37_9'p 31.7-_45-9',J[ 3S.9-_,57_9',J[(3,1-.B-_64--'pj[L41l)-732)jl�42230445 ti1a �� -2f) q_�� F 26.7 F 33.7 F _3q 0_� F 45.6 F 50.2 F 54.6 F 5-8 q_� F 134 2] � 68.1 1°3213') 23.4-'.312) . j [ 234'.39.5',( . __1_L33s_4 _&c -L L3.2.3 -564r -__] LL4_14tF_,22-p_1 L44.0-59.2' --L 42.2-765'p __IL4_V134.2 _5_s,,_7_J 9 9: 94 9b 24.8 F_ 3-1 _57� F_ -Jq _57� F_ 4-5 4-7 F_ 52.8 F_ 5-7 _q7 F_ 62.E F_ 6-7 4-71 73.3, 77.5 (2 1 n 7- 29 a U_27_5_,3_& _aU U -34-4-4-& _2�J LoL3_5_3 -s-L U-44-3-fi-4 -1 L U-47-7-7-1 _73 U-50-6-7-9 _sL L(5.3.0-27 L5_5 _4 as -9d 056 . 7-'l o S Precip'liaton are based oRfiequency ainal,,�sisoflpartiialdLifat¢Cl,rlS8reeSdPENSj. Numbers in parentliesis are PF astinaies at lio'waar and upper hounds of the 9l coinfdence inierval The prolo a bill ity that precipiation freqL]18Wy esfiinares, (for a given duration and average recurience �nterval� wifil be greatlef than the upper bOUnd (or less than fll lower bgUnd) ls 5% EsIlmates, at upper bOUnds are not checked against pol maXIMUM pracpitafion (Pll e-finiales and nay be higher than curventIVvalkci PIMP Yallues. Please refer is NOAA Aillas 14 dOCUment for mare informarion. Butte County Improvement Standards; Rainfall Criteria D-1 H Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html CONCOW (intensity, in/hr) NOAA Atlas 14, VOlUllne G, Version 2 Location na.ma: (Dr-ovii1le, California, USA' Latittick: 39.7996', Loingitude: -12!1.5:0,07' yy Elevadow: 2385.56 ft*' scurcHIP. `.lops SOL,— U2 GS POINT PRECIPITATION FREQUENCY ESTIMATES 23nja Fm die 5,9�z h IDI!Rtz, �S3r3)� l _Nian HlneT, 11<3ZLnQU `ABl1SF13, DRbIOIF3111 V,311,n S_�rldl-3 FavJlo ic Ishanii R Dy Ca,l T>YPBILk, CEIR Un%O, Ferghn 6'an rAidaall 'gpkta Ten Zhac, 3e^Dffreey Eon,n, 03nall IST wig Lu Chuan Clhpq, 7ye Rqrzybolk, J,317n )"ar&oan Cdve,3j:n9@ r4aryland PF tabOar I EF graphical I Map PIF talbulair 2 -day a. 130, a.1651 0.,211 1 0,.248�,3j[q� 0,298 0,336, 0,374 0,413 0' 505 ft`144-0.19 3:dfti (0215-0.2' 30SD O 117, f7 131 F0_A_68_7 FO_1'97 qq t15-0 4 -day 0.037 0.111 30��[q 124-0 1 0.1167 ��j 2001 �1(9 J0.2258C,]j(9 0.251 18][0 0.276' 0337 [m7l&-0.1012��[M97-0.1 24-0.167��1(9144-0.197 (01068-0.244� 85-0.2 201-0.3 216-0.360��l(O�20314-0.420��1(o�246-0.47��� T ,,;Y—]F .0 063 _0.0_30_�F _0.1_02_�F _0.1_20_�F _0.1_43_�F _0.1_60_�F _0.1_77_�F _0.1_94__0.2_16__0.2_33_�� 0 055-0 Oa4d q0 070-0 _0 06'10D GSGy f0 O dQ611 3t l0 055 0;1 u"i 15 10 06157} f0 112-0 177][C 113-+) aVF _0.0_34__0.0_43__0.0_54__0.0_63__0.0_74__0.0_82__0.0_90__0.0_97__0.1_07__0.1_14_�� 0172-01 IF o 027 tO 0241032'1 45 -day 0.022' 1 0.0283 j[9:NN;1 0.-0-4-1-1 1 = J;M J;M I;gQ 1 —11 —1 [0 ft025-0.1) 3 1l0035710481 1D OS.T070 01D' 6F_O.021 7[000.025 0.036 0.041 {).=141=L=== 034-0.0 337-0.1356� F 00 IftO 1 711323t� 220 G72q,, Ift027 [9 50J[O� Predpitaficin fiequency (IPIF} esfirnatles in this table are based on frequency ainalysis of 1piartral ClUfaMIC11) serbes fIPDSk. IlLgirnbers in parenthesis are PF estmates at lower and Upper bounds of the SV6 coinfidence interval The prolbabilky that precipitation freqUeRC'� e3tll'fla4eS rJclr a wen duration and average recurrence lintei,vad) mlh be grealeir thain the Upper' Icoulncl ror less than the(lower boundis 51,6 Estimates at UPPeIr bOUIXIS &T 110q wecked against pichable maxii-nuinn preripitation (RMIP) estimates and may be higher than OL111'relAY V,111d P11211P VaILI&S -lease refer toy HOAA ,atlas 14 dmlmend for irnore nnfor"matian. Butte County Improvement Standards; Rainfall Criteria D-11 Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: https://hdsc.nws.noaa.gov/hdsc/pfds/pfds map cont.html CONCOW (Depth, in) u 11 NOAA Atlas 14, vOW11118 6y ver SIIGII 2 LoacatNanl rlatne 0iovillle, Capiifo nilia, USA Elevation) Lat'utrueie: 39.7996', Longitude: -1121.5907° 2305.56 ft`` � sculrce EFIRMapsro surap J GS .,..;, 4 POINT PRECIPITATION FREQUENCY ESTIMATE '3an,j�a F'arcica Sarah ICiatz Sara?r Heine Lilian Hirer, IlKazlzngu IMalla�rio, G 1:i,Drah Val n Sandra avllOViio, Ilcs`. ani ftOy, Carl T,ypaJluk:, Calle JffLilri, F�rgl.n'r"an lelichaell '(4k.t3 Tan Zlrae, Geoffrey Dornan, IDani IIE.r.,,wpr, _<:husn Cl,e,r _eye Paezybok. 1ohn '✓archosrr IdrJAA rJanor�s@'md�ptherc aper , p 2,lvea SrTing, FAsrylland PF tsibdar II, F gLii2hllcal I rdlalas &eflialll� IPIF tabular PDS -,based point preciplitation frequency estimates with 90% confidence intervals (lien ilnches)l Average recurrence interval (years) 1 � 5 1Ck 25 561 1100 2�� 5610 10061 5 r11un1 0 224 0.277 03487F 04077F 04977F 05507F 0,3157F 0 682 t1 7a G Q.84r8 10 152 0 2641 q0 237 0.326p r6 29'7 � 4fl�;7 r0 343 11 4661 .10 q0 39'5-0.66131 (6.435 6 TQC',r .. (0 4t2 0 En6' q0 507 0.927 � (u0.549 1 11,`7 !rJ 575 1 28 k 1C]_ralrnl 0 321 0.398 0.499 0.593 0.698 0.788 0.891 0.478 1.11 1.22 46 2775 0.3F91 40 346 0 47 7 (0:426 5�i5 492 0.6971 40 5EC-0 86�i1 10.024 1 01 0 f77 -1.16',J40.72'7 1 331 0 737 1 5% (8 826-_181b f5 n inl 7�F0149 .604 7F 0.705 7F 0.844051 7F 1.07 1.1 87.641 1.35 1.47 40 3330.561 46 4.389 5631 f0 5015 0 15+z ('0 595 6 843} (0 l0.� 4-3221 40 819-1.40"� 40 °79 "O.Si5 -1 92: (,C,999-2 18 OCl_rminl 0 532 0.658 0.925 0.464 11.16 1.30 1.46 1.62 1.94 2.01 46 455 0.62e'1 43 563 a 7777 76:760 6 976: 40.314-1.15, (0'932 r 441 1 63 1 67 Q1 1a 1.92", (1 20 2 20", ; 5 3� 2 63 1 3a 2aal.. 64 n11in 40 0 d 6 3531 (6 66950 p 1'0 95& 1 33p1 v fl 111-31 571 I (117-1.961 (140-2.27p I 41.52-2.W I (1 4-2099i 1077-357, tl 6-4406p 1 015 1.24 1 60 1 85 2.'14 2 46 2 74 3.012 3 42 3.72 2hr g09027.24y 1761.521 1.36189y g15622U 1176:2.731 195375p g2103W I {225411p v242466 253553p 9 35 1.64 2 A1� 2 34 2.76 3 A14 3413 3.74 4.25 4.63 ,�-N1r 1 941 1. 3 2 46' 2 e3-4.50°, 67 5 13°7 ; 71 G 17, 3 15 13 41 16 1.591 1 41 ... ' 1 97 2.66°, 2 24-3 441 2 44 3 95'3 66'b .. ------- Th 2 01'4 2.54 3.11 3.58 4.21 4.69 5.18 5.69 6.38 6.42 r 41 79-2 47'1 (2.17-2.D91 (2.65-3 69y 43.02-4.28y (3.41-5.241 (3.71-5.99p 43 98-0 E1 y (4.23-7.73y 44 51.9 15] 4 70-10 31 12-hlu 3 19 a 3.'93 4 819 5 67 6.71 7 51 8 31 9.13 10 2 11.1 2733.751 13304 641 4.'17 5 66 4.7 9-0.79'7 15 45-3 361 (5 94 9 59 9.3$-16.9', 13 76 12 4'e ; a 24 14 6 7 54 165 b.. 24ha1' 11.6 129 143 160 17.4 ....14dd"5834?1 75H` 781 lS3-6864y 4"47-6162y 361261 S577 -1441y I 8164-164y I M2-1&Sp 021.217, 1127-243p 6 23 7.'94 10.1 11..9 14 3 16.1 17 q 1q 8 22 3 24.3 2 oda 5457261 0939261 (6.63tl19;1 16.3-14.17 117®-1741 1322061 14422.6'7 155256'o- g16637(?,1 (tl7733.9b 7. 12.1 4.2 28.951 ,1 48484E651 (625-110,1 (10.5142p 41213166.8y (1413;�8'r (15.8239p 417214...2y 1p25368y v202-3 1 (2( 1-40 4 -clay 319677'; 24.0 2J84 4^ 1931 51 119160. 13'918.9", 1019.2 1 341 17282681 1933^.5", 12028345", a236.5 2362521.. 7 ¢day 90 6 1 � 5 17.2 20 1 24 0 26.6 29 7 32 5 36 3 39.1 43.26-12.4'7 I o18-15.8,1 15.0-2011' (174-23.7'1 I (201-,2921 I l22.1-33.31 I (238-37.7'1 (255-424'1 4273-491 (266-5471 12 1 15,5 -1q .7 22 q 27 2 3o.3 33 4 36 5 7 F 40 5 43 5 10n Q106142'7 11351811 11712361 Q198271"7 (228:3311 124937'61 Q26842'.4"7 (2364 5"7 ;305548 3tr'608p 20-tlay � 1411616 1 °26- 11 22�� 30.Sy 26.1-35.'7 y 2536 43 31 32 4p &.9y 34 -54.'7 y 3046 00 9y 38 7169 6 4CX 53786 61.. 1q 6 24,4 31.4 36 3 42 5 46.4 51 1 55 1 60 3 64.01 n30 flay 417722.9'z 2182971 27.4368p 431442.9y (356:5171 (38.6582p g411a4.8y (432778y 4454816 (467'6951 45-cNay 55 2123 8.3"7 2633561 3,34449p 384352.0+ 4350 xz41 4053098p 4901707.4"+ 5164 54"+ ;5"?7 55610,5", 60i1ay 7F 360 7F 2 5q2 7F 513-k 1x5233.5''1 3187 4 71 3905 4 4445;06.4"z 491 6 201 534 dap 4566gE8.8"z 5E749 6z 6181-110} �$ Prec(pAallic"r f equency OPIF1 estilmales in ):his table are Ibased can frequency anally -SIS O1' Ipar1€al clura4lcna aeries d,PD_9). PNur(mbeis in p-aientbes1s are PF eshmades at lower and upper hbulnods of the 9V96 confidence inlersral The prabadtlliN that plreeupilation freyuenclyesti(mates(four a given duration :and recu rence urtelruall wifill be c3lrealer nlhan time upper bOuncl (or less 11haln the hmaelr bound) vs 5'»r5, Estimates at upper bounds are not checked aga(ns1 probable (maxilnrun¢ precpilafrcnm vPMP,I esnimates and 1113°y be higheri:han currenfly vallld IPIPk1P values. Please refer to NOAA Atlas 14 dracmerenf for Inrrare unfor malion. Butte County Improvement Standards; Rainfall Criteria D -1J Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html OROVILLE (intensity, in/hr) POW PRIECIPITATlOIN FREQUENCY ESTIMATES S,3nl3 Fmhoa, Sarah h D!! Rtz,;Saran Helm L! I I i an Hiner 1`13ZLnglU %1311113F!a, Cebor3l, V3,rt n Sandir-� 17'sv I cyic ls)ian !I Roy, Ca, ,l T,YPSILk, Dal a Ur,u,h, FeI "ran Vic[73sll 'Ipkta, Tan Zllac, Geoffrey l2orr,n DgnIsIl 12rew- LI -Chuan C -11-n, 7ye Pirzybolk, Joln Yarnnar NOAA llatlmaf'Npzl:her Spiry >_ Sdve, Spn9g, IVrarcy Iraorr,J IPF kabulalr II EF graj2]jc2j II %lalms� a PIF tabular IPDS -based point precipitation frequency estimates with 910% confidence intervals (in inchesihouir)l Duration I Average iecullrence interval (years) (1.610-2. 1 (2.1 10-2.337 (2.8,3-3.8,9} (3.52-4.94} (4.57-6.97y (5.30-9.51 (5.96.10.2 (15.1&4-12.1 17.51-15 1 (3. 15-17 .91 LL1_1s_l _s6_LLL1_51760&_2 _LL2_c3-2791 L2_52- �35,5� 1 13�28,75�00y a, L4 277_2& 0.4 _75_6 _7_�F_l 4_2_� LLO x241.25°,IJLLl 22 1 W3fl-naailn 4.762 1.761 _j 1(0.6556-0.99C (0.864-1. 167 L(l39 _2.251JL(23 NOAA Atlas 14, Volume 6, Vei'slon 2 PLocation naine: Groville,, California, USA' 193-_&W Latltude:: 39.5116T, Loinglitude: -121.5533' 7210.3,1j E levation: 1137.54 ft" I (1.87-2.W ES17, `1,pa J203 POW PRIECIPITATlOIN FREQUENCY ESTIMATES S,3nl3 Fmhoa, Sarah h D!! Rtz,;Saran Helm L! I I i an Hiner 1`13ZLnglU %1311113F!a, Cebor3l, V3,rt n Sandir-� 17'sv I cyic ls)ian !I Roy, Ca, ,l T,YPSILk, Dal a Ur,u,h, FeI "ran Vic[73sll 'Ipkta, Tan Zllac, Geoffrey l2orr,n DgnIsIl 12rew- LI -Chuan C -11-n, 7ye Pirzybolk, Joln Yarnnar NOAA llatlmaf'Npzl:her Spiry >_ Sdve, Spn9g, IVrarcy Iraorr,J IPF kabulalr II EF graj2]jc2j II %lalms� a PIF tabular IPDS -based point precipitation frequency estimates with 910% confidence intervals (in inchesihouir)l Duration I Average iecullrence interval (years) (1.610-2. 1 (2.1 10-2.337 (2.8,3-3.8,9} (3.52-4.94} (4.57-6.97y (5.30-9.51 (5.96.10.2 (15.1&4-12.1 17.51-15 1 (3. 15-17 .91 LL1_1s_l _s6_LLL1_51760&_2 _LL2_c3-2791 L2_52- �35,5� 1 13�28,75�00y a, L4 277_2& 0.4 _75_6 _7_�F_l 4_2_� LLO x241.25°,IJLLl 22 1 W3fl-naailn 4.762 1.761 _j 1(0.6556-0.99C (0.864-1. 167 L(l39 _2.251JL(23 -_2.&E1 2 64_4.03I I 13�06�4�921LL,145-_5.87} 193-_&W (4.34-_,?,.74'pL(4 7210.3,1j (1.44-2.103� I (1.87-2.W I (2.17-3.49� I (2.454M I (2.72-4.W I (3.13S 5.210p I (3.35-7.33? Ga rrliln 0.461 0.609 0.819 1.03 1.40 1.66 1.92 2.21 2.63 2.93 (1.14-1.73'1 l 32-2 llp I (1.49-2.521 I Q1 &5-3 (1.8,6-3.760 I (2.103-4.431 fir 4.361.01 1.15 1.35 1.52 1 8369&-11a ILO -7 7613 LLO _s _53_1 - 5 13 3.;954-19'`7 [ 1G3-2.251 j 3 -hr 1;0 = L,O 2 3 3 0 3 1 SIJ 7 -0195 7F 0.233 hr7l(FO.169-0.229��l(O.201-0.27577� 0.440 0 478 0.578 OY _66_11- 43461.10 _749 1 E+ 01.3301 0393 Fo 0.4440.703 1(9.245-0.337��k.2913-0.393] (0.477-1.04� 12 h11 0.130 0.163 0.206 0.241 0.288 0.323 0.360 OY97 �F 0.447 0.436 1111 4.400 0-111 4.156 4 185 6 223 a 251 4.279 4.746 a. X41 4.367 L,O 077.0 1113', LO 103-0 1388� 0 312 �LO 224.0.354, j 10�2137: ...... ,jay__]F _0.0_58_ _0.0_78_ _0.1_04_]F _0.1_23_]F _0.1_48_ _0.2_00_ _0.2_22_]F -0.2-38-] 3-¢l01 Y:] -1. 1 _131 F 4126 M�M= V12-0 17-0 _T j ,j7,YF -O.O-38-7F -O.O-5O-7F _0.0566_7� 01.078 01.094-7F-O-ll4-7F-0.1-25-7F-O-I _387F_0_14_87� I(O033-0.044��l(O044-0.05q(�l(D.057-0.077( �(0.067-0.092� F�c 0173-0 ,j7,YF -0.0-28- 4.436 F 4.446 - _ 7 F _0_. 453 7 F _0_. 0-6 T 7 F -0-. 471 4.4794.4£17 _ 4.497 0.14x1 - _ (0. 0 31 - 0. 0 4 2 (0. 0 40 - 0. 0 53 (0. 0 4 5- 0. 0 63 1 ( 0. 0 5 3- 0. G 78 0. 0 5 9 - 0. G 89 0. 0 63 - 0. 10 C- G ME- CI 11 3 (0. 0 73 - 0.131 0 . 0 7 5- 0 . 146 1(0. 024 - 0.033 4.423 0.428 0 2 8_7 F 4.435 -_� F -0-. 441 F _ 0 5� F OX -6 67 _1� .0 F 4.475 -_� F 0.482� (0 053-0.087y (O 357-0 1027 41 -0.0-35 .041 L100 1300 1-8-111 1Q0�029�8�1344}� LO 033 0 055',] Y 1,3 01ak 13 1 a331&f 13 1& 0x331 1;3 19 0 327;1 Q3 3 3 3311 Q3 �F 43 342543 0 -0.0-33-7F -0.0-37-7�F 028, 32.03-9. 13W 15 'ITY�F -0-0-10-7F -0-0-13-7F -0-0-16-7F -0.0-18- -0.0-277F -0.0-23-7F -0.0-25-7F -0.0-27-7F -0.0-29-_0.0_31_7� 100090.01' (0611 LL7,VA15r 1001+1031"7 1001&00�1p 00017 0.351 100T 0.009 1 01.011 �F0.114 0.016, .018 0.0201 1 0.022 0.023 1 0.025 0.026, O' 60-11-Y110 00 M 18-0 rill HVIO-0.013u A012-0.0161 11 Preecipltafion frequency (IPF7 estimates In this tall are based an frequency analysis of paffial ClUfafiC111 9elleS CPDS). Numbers, In palrerill are PF aslimates at loweef and upper hounds of flne SO'k1 confidence linlerval. The probabifity that precipiiation ireql.1,81TUY esilinales (four a grven duration and average recurrence unterualll mill be g1reateii than the upper ll (or less than the lower lbouiqdis :59,. l at upper ll are net checked against probable maml precillortation (PMIPr estirl and may be higher than cluirierfly Yalicl PrAP Vall.les Please refer to NOAA Atlas 14 COCILIll for imore inforil Butte County Improvement Standards; Rainfall Criteria D-1 K Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: https://hdsc.nws.noaa.gov/hdsc/pfds/pfds map cont.html OROVILLE (Depth, in) NOAH AtRaas 14„ vollu ine „ Version 2 Location, uarne CPac"wrlillle California, USA" �g Latitude:: 39.516S', Longitude: 12'1.5533 -�tha Ellevratuonl: 1137.549k"'" a I� cul O=JR r lope «,,. ,.:. E-.. J"f; S POINT PRECIPITATION FREQUENCY ESTIMATES Sage Herioz Sarah IDiatz aarahii IHe-.ini Li llia�n Hiner IK3z1ungu Wlaliaria, DeIL-volral^ Md atn Sainklra avIcvio. 11zhavl FR.Dy �:arl T,rpailuk, Dalle Unruh, Pelrgll,n r'ane R"rllohael `6'pkta, !fan Zinac, Geoffrey 8onnln, IDaniel I&rewwrer, LI -Chuan Chen, -ye Parzy4bDlk.. Jrah*n larQhoan NOAA, National Vdexther Selru e Sfte, Spring, fvlarµ9.ard PF tab!01isl1I,PF gll�rglivocel II ILvla1a erii Jls IPIF tabular PDS -based point Iprecipitatlian frequency estimates with 901% confidence intervals (in inch+es)1 Average aecurrerice interval (years) 1 2 5 4�., 25 50 1t1tt top Sop 1C1ttiS 5 nllln 1 (. _) [ p {• ) k 0.443 0 884 M Gla t,.2Gj4 0.275 0 34 0.468 0 557 0.646 ( 235-0 3741 f1 X93--1.41 � 6' 351-0 SP1 "t1� 443-f1 r 09 [0 497-CM.aJ47 1;0.556-1 OYIA 1;0.036-1 2Ui'p 1;0 600-1.49A [0133-01x71 f11r5'-62Nd] [0 10r111in [01910260,1 (0 25 -0344) [03310465; (04204i0J591) [05408331 (0:.633-1 02) 1 x0712 -121p j(0.792'- 1 45", 1009-161", 1,'09154213°, 15 Ya11r w 3 505 0 714 [0 (36 a 24 19-2.19'r 1 7 74 7 w - y. 1 19-2.58r [0 2F -0.2-63-7F 1 51 (r33"04�410) [04�J4050�; 0594 ) 0.8112SJ11 (3.0965 3) [080��4') 109581F5t 11.. 30rt111n [0328044",1 (6435r]591)[05�060799j 16885111) ;05(371431 fl J 37r5 159081 1.36-87_4&'+ (1.5.11310' 1„1 4066".. FT -71.10.461 8 604 0,819 1.-13 1..40 1.66 F-1.-92-7 2.21 -2.6 :t -2.9 8 FT -71.1 (1.32-2.1 1 48 2p I (1.65-3.13N (1.86-3.76'1 (2.03-4.43'r 2 hr 6.673 0 830 1 05 1.25 1.53 1.76 2 g1 2.24 _2.70_]F -3.03] [0579-07'90,1 (0713-6276) [0.9011-1244 I (106-145,1 1 124-190: (1140-224) 1 1559641 11171-3111 11.01-3&5'r 1(206.451;r 3 -hr 07080955) 16 898FS16j 0521451 f 2-_1 lii 41 �415p (;fl 57-_2 953 73-2 95p 1.39345", 1,2.104622", (� S Ly.. G h r 1 17 1.40 1 71 7.98 2 36 2.66 2130 3.32 3.81 4.21 1 7 7 711339"i [229391p 12477-4.51'1 12.r05.44'i (2966.25'r [ 1 01 1 3a') (1 20-1 Pio) [ r 47 2 02 (f 80 2 30,1 [ 1 9�-� 9�p q'� 112 hr 1 57 11.97 2 48 2.90 3 46 3.90 4 34 4..78 5.34 5 86 3571 851 (1 89-2 31,1 [2 139 931 L -2-4-6-3-4-5L] -1[2 8274 36 L-23-3-4-5-6-9 L 536F24 -Nor 1 41147b (24 -3332.1 ;3 34439b (3 45525,1 ;449-I653p (490673499 ;5 � 8950p i5 r'5--957", (6117-1 1p (64838123', 78 2-3 3.44+01 [4.32-583k (51(0-397) [5 94-3 (354-9881 1706-11,2r (752-125'r 13.006 11.4 2 ,d76 97 90 - 1 v. v 0.6 ( 33.15 9t . 1 1 v o o. w w,w,k (7 C' ) c 1 72.4 3 ,d -;y 3 24 4.35 5 72 5.77 8.11 9.x18 10.0 90.4 12.1 425-379 (3 r9-5091 44,97-Ia71 (5 °5-80"31 [W 6J-9 (46-113'1 [8"15-1�_7 (058-14�t {.LT1-164 1;5345.131°r 3 18 45361 4 4 84 6 5„ 931401 . l i5 43-_P 53. F-8. 9113 9 �S 197 4 8 ^t3 _0 9.39 � d1u c �' 15 C,1 11 13.3 74.2 0 90.1 [74� p p 0.013 Or 1'104109( F 3.96 7.6 7dlaay [4105'49p (5 3670"x2.1 a 58596 74-1061 v395M-130k (91 511049.1 v1013.13 9k (1114-190k (12.3-22.N (1?.18?4'i 16tdaayr 4633 5 07691,1 v7019195) 9.91�,+ n11.144p 101419-1617813i3N 12�EX110'z { 1'3 6-24 5'1 1 14 7327 G4y+.. 2 _day.. 3408356'1 (79-1375,1 [97/151311 .. 9e 6 1 111253 028 1na-268 (;.13911 1,1 [15018 3..71 16203&", 11712306", 1.172 34 da 889 77.0 13.6 15.6 18..3 20.2 22.1 24.0 26.5 28.E F 7...2 7.8159 (13518.;51 [153-2231 (1160251 17828.11 1E33t3t 119.93531 1;20.t'30Sr [77011'7 4p (95, -10,1 f1.. .... d5 daay 11 01 1 913.7 17.07 1168-_229,i 19.4 22'.5 1 24.7' 26.8. 1 _31.4_]= [ 54-12 9 1r 6-15 11 [ 14 7-19 9 16 8-391 8 997 4 26 3 343 7} 21 6-34 1 27.6-3'r 6°" 1;237-42 5,°( 66-d� 13.1 16,.3 201.1 23.4 26.5 28.9 51.2 .33.3 :35.4 .37.8 .. 7 ) 27 22 2-32 3p 23 3-35 9,1 [ 25 0-39 6p (26.1-41C 4'i (27.1 43 7' 1; Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: httgsjlhdsc.nws.noaa.govLhdsclpfds/pfds map cont.html BERRY CREEK (intensity, in/hr) INOAA Atlas 14, VUILHine fa, Vei-sioin 2 Locadon inairne: Bermy Cheek, Callifiot nia, USA' Latitude: 39.,6628*, Longitude: -121.38' u Elevation: 25146.42 ft" 'Scuirca ESIF. Vqps 5DLr d2GG POINT PRIECIPITAMN FREQUENCY ESTIMATES Sanja Flanca, Sarah DiaLz, ISaradr IHemm Li,han Hiner, 11.az i.ngu PA_qi1zT[a, Deb,a4, Vart.n Szndirz m'svlowlc, I )hail Roy.: a,� T,ypa[Lk, Cale Um,un, F�rgkn "ran hfichasl w'ekt3, 7an Zll�c, Geoffrey Scirin Daniel Ere,%,P7, LI -Chuen Cher, -ye F=Vbok John Yarhoar N:D,A, IVatticiia, W�aLheit weir p aelver Spri=ng, IVlarylarJ IPF tabular I EF CjLip I R 12.s & � L_ jj_ �(PIF tabular 36 (0 75598�0G,11 1.14 1.47 1.75 2.15 ft74�2�67� �[ 2.46 1.94-3_14',J[ 2.7 9 2A4-3.67,2 3.14 3 �2�3 �4�2�9� 3.64 2.57-5.19 ',Jl 4.02 73_5 �W F �_-Ifl 617 (0.520.8-0.720] 0.78T F�o 1570-0 (DJ3&1-1.2:01p I (1.101-1.4C I (1.19-1.84y I (1.34-2.115y I (1.47-2.52y I (1.150-2.94y I (1.77-3.57y I (j 88-411 2 -tar 110.392-0.54`1, 405 0.577 '1 1.21 1 1.,36 1.52 1.75 1.93 8 56 - I � 3 2 Log -5,i -15,1 �13� .73, ,�4 5 4 V, 1 493 - 0.582, (0.623 - �3� Lo -7-,,-o 4 4� D_o4 7 13-2 071 1.21L55G], 1312BTr Thr7F _04_10_�� 0.511 f).9-1-9-7 ----- _-_0_5� F ----- tvs� 1.31 ----- 1 --lo-] 1.66 1(0. 1-0.7W�1(0_642-019_11�][ 745-1.15� I (0 66 (1.13-2.46r F �351-0.484��l(D.437-O.&014��lF�0.50-.647-�F 0.76 (0.9102-1.55� I (O.S74-1 79� �IF [:6�=F_0 4157F 0 5197MJF 0.724 7[=F 0 M57F 1 02 7F I IG 1.27 1�0�35514W�LO.442-_0.6_�5� 97�0�91]13�� o 7 -c -z I �0� 7 55� 1 �38 L Loa -1 _9 -16-(s)J 9,63 I.W j jft5 LL m Fo F; (0.20.32-060307y l0 -.2a74 -3--20o 78�}lF(0.-304T0-90_.94774,lF(0-.3o9_4,116_55711 l0 4 0 0 GSl2} (0 49 0 gOMO'p l0 S G 0 919} 0.55 -5 - T -o-.626 lFo _,39_aT(0_.54 _77-714.05, (0.6:a1-7_1 8 .261� I (0.6o5-93-611. 43� P4-her[;MF_0_242 To -3-04 ]=Fo_425Q==F_o_594 ]=1 , 0.738 1(0 2110 MdLO.2154-_0.357� 606 (0 5 7 538ml�133 j Ift35 Ift415 �0�7 5 0.164 0.2072043 0 '67 0.40 0 �4,06 4 0 {0.'3 0 34 _ C,3] [9 .09 P�=11143-13192JFO 179 0542? �]= 243- LO 2095, 41 �319-08532 ..... 307150 �712;� nn: 0.102 0.128 0.162 1 0. 1901 0.229 - F-0 _259] F-0 _290_� F-0 _322_� 0.366, 0401 F -I- 7Y Fo 089-0.1201][0 �12-0 F(o 192-0.2:7q��l�0.213-0.322��l(O.233-0.369��l�0.252-0.42F,���(0.27'&-0.497��l(D.29.3-0.562�� F -0.0-86-7F -0.1-08-77 -0.1-37-7F -0.1-93-7F -0.2-18-7�7 -0.2-44-7F -0.2-7O-7F 0'306 0.335 0 335 FT,i;y7l1O.075-0.101��l(D094-0.127��ly0, 119-0 24'4-104W� [7�==q0^ O C , 0111 3 1�0 11� �0 164n�� =F0 ---I 1137 0 134 0 213jl�o L I 0.1114 14 040r 1 0.2106 (0155-0.279� 0.223 0 �16213�312, Fo-,1 0 048 7�F 0.061 0.077 01.0901 0.107 F�o 090-0.1311).148 1 0.11 q ] F .132 F 0.144 �G 1 13-0 1667 0'. 11301 0.172 20 -day 0.031 0 00 1 0.051 .059 084 1 0.092 0.101 0.107 f0.0 70�7y q0 1&151 i0 0 043 0 046 0.049 0 053 0.056 0 039 [6�==F0.029 (0 .02'5 0.034' jftO33�0�047", n0411079r� Precip,itatiic,rifi,equeincydIPF(esti-nates in this table are based Hires RPD_91. Hummers in pareenffess ate PF esfiinaItes at tower and up�pei hounds ofthe RIG';', confiderI interval The probabilky that precipitation freq Lie RC'y estimates (fair a given urafion and average recurrence nlerval} wil be gieaIter fl7all, the upper tDoLglig, I Rof 18,0 ffiall the iloweir boundits 5915 Estimates at Upper bounds are no checked against p,i abable maximuirn precipitaflan (PFAIP1 estimates and may be higher than 01_9111I valid ROP IiodUeS P11pase I PJOAA Aflas 14 JOCLIHI for image riformation. Butte County Improvement Standards; Rainfall Criteria D-1 M (0.O36 0 G49pj 1i0�047�0�069�� kctnl]57-0% �Gr� L(MH-0.10j� 0 [0 2 0 11P_8 6 - 5; Fj�_T y F -0.0-21-7�F -0.0-27-77 -0.0-34-7F _0.0539_7� 0.045 � F_T_0_49_7� F-0-50 5-4-7 0.058 7F0_.0_63_7� 0.066, 0 043 0 046 0.049 0 053 0.056 0 039 [6�==F0.029 (0 .02'5 0.034' jftO33�0�047", n0411079r� Precip,itatiic,rifi,equeincydIPF(esti-nates in this table are based Hires RPD_91. Hummers in pareenffess ate PF esfiinaItes at tower and up�pei hounds ofthe RIG';', confiderI interval The probabilky that precipitation freq Lie RC'y estimates (fair a given urafion and average recurrence nlerval} wil be gieaIter fl7all, the upper tDoLglig, I Rof 18,0 ffiall the iloweir boundits 5915 Estimates at Upper bounds are no checked against p,i abable maximuirn precipitaflan (PFAIP1 estimates and may be higher than 01_9111I valid ROP IiodUeS P11pase I PJOAA Aflas 14 JOCLIHI for image riformation. Butte County Improvement Standards; Rainfall Criteria D-1 M Rainfall Estimates provided are provided to supplement the NOAA website if non-operable. Please provide site specific rainfall data using the Point Precipitation Frequency Estimates online service, found at: https://hdsc.nws.noaa.gov/hdsc/pfds/pfds map cont.html BERRY CREEK (Depth, in) POINT PRECIPITATION FREQUENCY ESTIMATES '23n,ja: Pertca, S3ra,h IC1iatz, IS3r3tr Heirre IL114119n Hirer, Ihkazuunglu ILlanari13, Caholraha V.3,lm Sandr_a svllc✓Ie, lsna:rli Roy, Ca. i LrpaJlUk, C.pl= Ln7u7r, Parglll,r'a'an. Vw clsaell'd'Pkta Tin Zc ,ac Geoffrey 8orn,n. Lla,nia11 12rewpr, L 4:hua,n Chea 7,4,'e Parzyb Dlk. Jr 17n 1'arohoan l,KDAA, (Nations 'aWaaither S-a1r, p Shaer Sionng, RAr r hard PF tabdar II,EF gLaLplljLgj II LWIalaq eerll��lls PIS tabular PDS -based paint precipitation frequency estimates with 90% confidence intervals (lin ilnches)l NQAA Atlas 14 vcrllruume G„ Version 2 F Average renrorreMe, initer-vaal �yearsi ; vt� T Loe,a'ftin 111a1n a iCheek, Ca11110}Irn Ila, USA'' Latitude: 39.66213',Longitude -121.3,0'° �I V 7Ck Etevalran:� 2540.42 ft" 3 1100 ny soursE,217VIPs 100Ca., . u�;t Eorroe, USE'S 0.244 10 205-6 283�r POINT PRECIPITATION FREQUENCY ESTIMATES '23n,ja: Pertca, S3ra,h IC1iatz, IS3r3tr Heirre IL114119n Hirer, Ihkazuunglu ILlanari13, Caholraha V.3,lm Sandr_a svllc✓Ie, lsna:rli Roy, Ca. i LrpaJlUk, C.pl= Ln7u7r, Parglll,r'a'an. Vw clsaell'd'Pkta Tin Zc ,ac Geoffrey 8orn,n. Lla,nia11 12rewpr, L 4:hua,n Chea 7,4,'e Parzyb Dlk. Jr 17n 1'arohoan l,KDAA, (Nations 'aWaaither S-a1r, p Shaer Sionng, RAr r hard PF tabdar II,EF gLaLplljLgj II LWIalaq eerll��lls PIS tabular PDS -based paint precipitation frequency estimates with 90% confidence intervals (lin ilnches)l @uratraul F Average renrorreMe, initer-vaal �yearsi Vim" �I V 7Ck 2',S SO 1100 200 5010 100Ca., . 5-aawlra 169 6 16� 0 2t } 0.244 10 205-6 283�r 4.314 (0.��64 a 315Fr 0 3G8 (0 311 6 441) 0.451 10 366-a SI6 4.517 (0.409 a alsrL 0.587 la 451-0.772 O.G6r1 16.49'1 6 6st9;r 0 765 tra 541 1.691 t1.84G c 5.4 1 �a 10-rrnrnl 4 271 10 232 0 3e5!} O. x44 10 29�-0 rQIS"+ 4.444 Q0.'37 a?�'+ 4 528 l� 445 f 63 } O.G47 1O 5L-4-0 9015', 4.742 Q0.5&P-0.941, 4 841 lQ 1346 n 11 0.947 10.7103 r 2'�!p 1.10 I;i 7r'S 1;57j 1 21 oG X23 1 n 15 rrnin' =F___114117=1 411 73271 0a 15 33 147 a 280 0 3 u} 10 311 91 °, (0.4p a 6" ', 1a 5139 01 84} 1;.0. 0 975', .8917r5i (�. 10 7x102,,. 4) 81 Sr r Sri c1 Ira !3. 169 oc 996"3-2 1ir� � 30 rrninl .. 0 449 10 304 0 53Q} .. 4.571 10 493 0 5 4i 4 736 (0.62 0 &jai 11 678 10 � a9 1 05 1.07 10.; 69 r.a4t �� 1.2� (0.97 1.571 1.40 11 071.6 4', 1.57 (1.'1 7 2.'14;p 1.62 ( 1 w9-2 �64J1 2.01 ;1 37 `` 99 p 00 rrninl 0 817 05280728( 0 784 fOG't00.926t 1.01 (066112 °r 1 20 f101144'i 1.47 (119-1.84( 1.69 I 1134216r 1 92 I (1.47-2.52:'i 2, 16 (1802.94' 2.50t t77-3 57i 2.76 f1E8411r 2 Ihlr T-77--77147 917 (0 785 1.08;) 9.15 f0 986-x a�5r 1.47 1.25 1 75 1 74 f1 4t' 2 0&t 2.11 (1 't 1-2.83( 2.41 1 91 3 OB 2 72 12 09 3.581 3 05 (2 26 4.14( 3.54 !,2 4". 51J0 3 86 v2 62-5 74p 3 hIr 1 23 f1 OS -1 45i 9.54 (1 ar-1.Br( 1.94 11.66-_ 31 r 2 2q f1 9a-�7 74'r 2.76 (c� �4„ .:3.44( 3.14 (2.49-4.100641 3 53 f2 71-4 5 94 (2 9a -5.a6( 4.52 (,3 19-G 45 4 97 3 36-7 40J 6 Ihlr 2102 f17a-�7 2.44 c38i (�1a-2.94( 3.11 1_2.65.388r 3 62 f3.136 -4.3C 434 (352-5.4r( „ 4.90 3 87.6 26r 5.48 4 21-1 21 t 6 0-9 (4 52-8.28( 6.941 (,4 9l3-9 91 .. 7 G1 5 17-11 3 12-h7 7 91470^! 0.3 13-456p 14.x0$171 5 61) (47M',. } (5.42-3 15 6-a. G 63-t1..1t 933 (69 1 7p 10 6 (;74 -t51 '87-17 2t.. 24-h1u 4 6q .. - A 5.81 -.. 7.24 (&34-9.5,6r :.a4.r 8 52 r1 a5-1®'1� 102 a°54.:124 11.5 1945.143p 12 q I r103-16 14 3 16 2 17.7 2-cIa I G31 (551-1381 7.8G 9.91 I (8,62-116) _67F_1_3 110.0-13.71 q gt17-170) 15.6 1 1129.196r 17G I (14.2-22,41 iq6 (153-256((163-Y"112.. 223 24.4 fl73-342p -cloy (6 7.58 44-B6ai 9.23 (�04-108( 11.7 1102.1a7r 13 T 7 (t1 �-1�i�q .. 9G 5 (138„ 20 r( 16.6 1153.232r 209 1f.&-26.51 23 2 1141-303( 26 4 (199-353 28.9 2t 1-405Si 4-cda F_,l � 8 27 x121-9671 14.4 (9 OS-1,�2 ( 1.x.2 (115155 ) 15 4 f13a-16x'! 16 6 1155„ 22 6( 21.4 (17.2-26.1 P 23 4 f 16 8-29,6'! 2G 0 120.3-33.9( 29 4 (�22 1-39 9,1 32.1 423 4-45 tit .. Fj 7 -clay � 1p1 "82-111 °P 128 gt12-150;1 16.2 (141.191 1q0 1164-225,1 226 (190-776( 25.4 1208.316 281... (226-35.6'i a 3_0q 0._42-403( 346 (26 0-46 9,1 37.4.. (273-524p 10-cda 11.5 110 0 13 4i 14,G 12.7-17.9 16.5 16 r21at 21 G 1161 25 . 6 ', 2'S 7 (.21.5-31 0-( 26.7 {23 _s3 5 67 31 G 125 4 40 21 34 5 27.0 45.9 38 4 t8 9 53 1, 36 1:57 6t.. 41.3 2 0 clay 131151 6'+ I821 2428.7? 124 2o.4 ,+ (2;.00 40.8p m 469? 4 4 1326 51,6"+ 44 4'34 4.4p 13648 5.5;1 (3755 7? 1b 3�I 16 5 116 1 21 6', 2,J,7 (20 8 27.7p 24.9 26 0 35 r f 34 G 129 9 40 9",(,3',3.9-49.4p 44 5 44.7 35' 55.6p 46 7 19 1 62' 0", 52-6_T___-515761 (41.1 68.6 p (;4 2-77.9;1 .41 ;44 4 85 4p 4`13926& 22 8 `19 9 26 6i 26,4 (25 2-33 8} 36. � 31 5 42 6k 41 8 fib 1 49 4", 48 G (40.7-59 3;P 5 �.4 43 9 68.41 56 0 46 5 73 r ", 62 3 (48.7 81.2p 67.6 (,SQ 9-91.r';1 71.4 r52 1 1001 da 2Gq (23.5 3r.4i 3 q (295 397( 42.2 13,6 749 5r 484 . . (417'5721 5G4 (468-682(5,0.3-7&.0 ( 61.2 6G2 (53.1-8,4.0 744 (55 4'92 5( 767 (57.71 104r 641.7 4586113.1 PrecipltaBtcun t"equelneyr 41P1Fp esthmates 1113 this table are based or frequency analysis of partial elufatloclln sertles t.PEIS'y. n7uirinhers in parentheses ate PF aTsfiimates at tower and upper bounds of the W1%, confidence ilnte,rval. The probability that precipitation frer4uercv estliim2es (icr a given duration an -d average reculnerce untelnaall) vnlll toe greater Man the upper Itolunrl fcr Mess 11fia1n the lvege1r loovmrlk IIs'.5 %, Estimates at upper Vaou.rncls are not checked against probable mwilrrrur>T precrpltatrcn r,,PPAPp estimates and may Lie higl' erthan CU rrelnety vallid IPI51P values. Please refer to HOA"A Atlas 14 cucculenelrt for lmore unfcormation. Butte County Improvement Standards; Rainfall Criteria D-1 N Reserved for Future Use Butte County Improvement Standards; Rainfall Criteria D-3 Reserved for Future Use Butte County Improvement Standards; Rainfall Criteria D-3