LAKE WILLIAM

Reservoir Levels Weather Hydrology


RESERVOIR CALIFORNIA

Lake William


April 30, 2024

Lake William, located in Napa, California, is a privately owned water supply reservoir with a primary purpose of irrigation and water supply. Built in 1960, this earth dam stands at a height of 66 feet and has a storage capacity of 340 acre-feet. With a surface area of 16 acres and a drainage area of 0.51 square miles, Lake William plays a vital role in supporting agricultural activities in the region.

Managed by the Natural Resources Conservation Service, Lake William has a high hazard potential but is currently in satisfactory condition as per the last assessment in September 2017. The dam is regulated and inspected by the California Department of Water Resources, ensuring its safety and compliance with state regulations. The reservoir is situated along Tr Milliken Creek and serves as a crucial water resource for the surrounding area.

Despite its small size, Lake William plays a significant role in water supply and irrigation in Napa, California. With its high hazard potential, regular inspections, and state regulation, the reservoir serves as a crucial asset for the community, highlighting the importance of sustainable water resource management in the face of changing climate conditions.



Year_Completed 1960
Dam_Height 66
River_Or_Stream Tr Milliken Cr
Dam_Length 575
Primary_Dam_Type Earth
Surface_Area 16
Hydraulic_Height 60.8
Drainage_Area 0.51
Nid_Storage 340
Hazard_Potential High
Nid_Height 66

Weather Outlook



16 Day Long Term Forecast

Seasonal Comparison


Historical Data


Area Boat Ramps

MCKAY AVENUE 1200, ALAMEDA
San Francisco Bay Watershed, California
POWELL STREET 3310, EMERYVILLE
San Pablo Bay Watershed, California
HIGHWAY 45, KNIGHTS LANDING
Sacramento-Stone Corral Watershed, California
PIER 52 BOAT LAUNCH
San Francisco Bay Watershed, California
DOOLITTLE DRIVE 7250, OAKLAND
San Francisco Bay Watershed, California
TURNEY STREET BOAT RAMP
San Pablo Bay Watershed, California
PAN AMERICAN ESPLANADE SAN FRANCISCO
San Pablo Bay Watershed, California
BALL PARK AVENUE 14775, CLEARLAKE
Upper Cache Watershed, California
SAN FRANCISCO BAY TRAIL, BERKELEY
San Pablo Bay Watershed, California
SAN FRANCISCO BAY TRAIL, OAKLAND
San Francisco Bay Watershed, California

Rafting & Kayaking

ROAD 24N01 CROSSING AT THE "SLAB" TO NF BOUNDARY
Upper Elder-Upper Thomes Watershed, California
CRESTA DAM TO POE RESERVOIR (CAMP CREEK)
North Fork Feather Watershed, California
HEADWATERS TO FOREST ROAD 94
Middle Fork Feather Watershed, California
POE DAM TO HIGHWAY 70 CROSSING
North Fork Feather Watershed, California
HIGHWAY 70 CROSSING TO LAKE OROVILLE
North Fork Feather Watershed, California
BIG CHICO CREEK
Mill-Big Chico Watershed, California
BEAR GULCH TO CONFLUENCE WITH MIDDLE FORK FEATHER WSR
Middle Fork Feather Watershed, California
BUTTE CREEK
Upper Butte Watershed, California
ROCK CREEK DAM TO CRESTA RESERVOIR
North Fork Feather Watershed, California
HEADWATERS TO BUCKS LAKE
North Fork Feather Watershed, California

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Park and Recreation Area

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Ellis Lake Community Park

Washington Square

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East Lake Park

                                                                                                                       
                                               
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SCENIC OVERLOOK
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CATHEDRAL GROVE
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