Lake Oroville

CALIFORNIA


Lake Level
816.44 FEET
4/25/2018
Full Pool: 728.1
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Lake Oroville News

Editorial: No DWR at Lake Oroville? It could happen

Chico Enterprise-Record

Date: 4/26/2018 12:09:00 AM

The sausage-making process in the state Legislature usually takes a bill and waters it down in the spirit of compromise. So it was a pleasant surprise when the Legislature took Lake Oroville dam safety legislation and made it stronger. That happened

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Oroville Dam: Phase two of construction expected to start May 8

The Mercury News

Date: 4/20/2018 4:25:00 AM

This comes as DWR submitted an updated 2017-2018 Lake Oroville operations plan on Tuesday to the Federal Energy Regulatory Commission and the California Division of Safety of Dams for approval. The updated plan triggers more aggressive outflows of up to

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Oroville Dam rebuilding project set to ramp up again

Western Farm Press

Date: 4/19/2018 6:45:00 AM

California water officials continue to defend their management of Lake Oroville as a second season of main spillway reconstruction on the reservoir’s earthen dam is set to ramp up in May. The state Department of Water Resources has updated its operations

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Oroville Dam phase two of construction expected to start May 8

Chico Enterprise-Record

Date: 4/18/2018 5:44:00 PM

This comes as DWR submitted an updated 2017-2018 Lake Oroville operations plan on Tuesday to the Federal Energy Regulatory Commission and the California Division of Safety of Dams for approval. The updated plan triggers more aggressive outflows of up to

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What’s happening this weekend in Oroville

Oroville Mercury-Register

Date: 4/13/2018 8:56:00 PM

3207 Rutherford Road, Gridley. Entry fee. Monday-Friday, 7 a.m.-3:30 p.m., 846-7500; Saturday-Sunday, 846-7505. Lake Oroville Nature Walks: 9 a.m. Meet at Visitor Center, 917 Kelly Ridge Road. Explore trails around the lake. Bring water, snacks

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UPCOMING EVENTS
5/13/2018 - Mother's Day
5/28/2018 - Memorial Day
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• River: Feather River
• Length: 167 Miles
• Surface Area: 15,810 Acres
• Volume: 3,537,577 Acre Feet
Lake Oroville, is a reservoir formed by the Oroville Dam impounding the Feather River, located in Butte County, northern California. The lake is situated 5 miles northeast of the city of Oroville, within the Lake Oroville State Recreation Area, in the western foothills of the Sierra Nevada.

At over 3,500,000 acre feet, it is the second-largest reservoir in California, after Shasta Lake. The lake is fed by the North Fork, Middle Fork, West Branch and South Forks of the Feather River.

The lake has an unmarked 9,000 ft diameter landing area for seaplanes. The lake is a popular nationally renowned bass fishing location, while coho salmon are stocked from the Feather River Fish Hatchery.

Prior to impoundment by the Oroville Dam, the current main basin of Lake Oroville was the location of the confluence of the North Fork Feather River with the Feather River and the now-inundated towns of Bidwell and Land. Completed in 1968, Oroville Dam is an earthen dam and is the tallest dam located in the United States, measuring over 770 feet high and 6,920 feet across. The dam was the largest earth-fill dam in the world until succeeded by Aswan High Dam in Egypt. It was built by the California Department of Water Resources as part of the California State Water Project. The dam houses the Edward Hyatt Powerplant, an underground hydro-electric plant that was completed in 1967. Six generators are used to provide a maximum generating capacity of 819 MVA.

The Hyatt Generating-Pumping Plant source water for the Feather River is released from two discharge tunnels at up to 17,500 cu ft/s during peak demand and "little or no release the remainder of the day". The power plant also routinely draws up to 5,610 cu ft/s of Feather River water for "pumpback" into Lake Oroville. Hyatt releases are stored in the 4.40 miles serpentine river channel (Thermalito Diversion Pool) which extends from the river's source to the Thermalito Diversion Dam.
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