HomeMy WebLinkAboutLake Oroville Community Update - DWR Releases 2017-18 Lake Oroville Flood Season Operations Plan Menchaca, Clarissa
From: DWR Oroville Spillways coroville@water.ca.gov>
Sent: Tuesday, October 17, 2017 2:21 PM
To: Menchaca, Clarissa
Subject: DWR Lake Oroville Operations Plan
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�Lake Orlov"Ille Community Update
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October 7, 2017
D,WR Releases 21017-18 Lok_ Oroville Flood Season Operations Plan
The Department of Water Resources (DWR) has released the operations plan for Lake
0roville during the 20117-18 rainy season to protect public safety while construction continues
on the reservoir's main and emergency spillways.
The plan, which will guide reservoir operations between November 1 and April 2018, calls for
DWR to maintain lower-than-average lake level's during the winter months to provide space for
inflows and manage releases from the substantialily reconstructed main spillway.
"This plan puts public safety first, while also meeting our water supply and environmental
obligations as we repair and rebuild the Lake Oroville spillways," said DWR Director grant
Davis, "We will operate Lake Oroville conservatively until construction on both spillways is
complete in late 2018, early 20119."'
The, plan calls for DWR to lower the lake level to an elevation of 700 feet by November 1,
compared to the average 780 feet elevation maintained on that date in prior years. The lower
level will provide more than 2.2 million acre-feet of flood reserve storage to accommodate
inflows during the rainy season. The lower lake level, combined with operational
contingencies, should allow DWR to keep releases from the mostly reconstructed main
spillway at 100,01010 cubic-feet per second (cfs) or less over the winter and ensure lake levels
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