Folsom Lake 2022

Updated May 19, 2022

Folsom, Calif.- May has arrived and the dry season is upon us. While late April rains and high mountain snowfall have slightly improved the water outlook, the overall picture remains difficult. An exceptionally dry season has exacerbated fire and drought concerns for 2022. Following early winter rain and snow that walloped California with major snowstorms in December, optimistic hopes of a wet winter were dashed. While the 2021 deluge did bring sizable relief to our drought-plagued state, a steady flow of winter precipitation failed to materialize.

Among the largest reservoirs in California, Folsom Lake and Lake Oroville have seen the largest increase statewide to date this rainy season. Folsom Lake, a critical water supply to the Sacramento region was recently among the most depleted reservoirs.

After dropping to 22 percent, Folsom now stands at 110% of average at 86 percent capacity. Lake Oroville, which at one point was forced to shut off it hydropower after dropping to 22 percent, now sits at 55 percent according to the California Department of Water Resources.

Drought updates and status of California’s 10 largest reservoirs.

Cities throughout California have tightened water restrictions in an effort to navigate extreme drought. Communities such as Roseville and Folsom have mandated 20 percent cutbacks, while in Mendocino County, wells have run dry as the community has been forced to import water by the truck load.

Top 10 California Reservoirs

Did You Know?

  • Taller than the Hoover Dam, the Lake Oroville Dam at 770 feet is the tallest in the United States.
  • An acre foot is approximately 326,000 gallons. The average U.S. household is estimated to use between one half to one acre foot per year.
  • In 2017, the Lake Oroville Dam spillway at risk of failure caused a large scale evacuation

Total Outdoor use accounts for an estimated 30 percent of water use according the U.S. EPA.

California reservoir levels over time

May 19, 2022

RESERVOIR% Capacity% Average
Shasta Lake4048
New Melones3860
Don Pedro6583
Lake Oroville55 (+33)*70
Trinity Lake3139
San Luis Res4661
New Bullards Bar88 (+47)*102
Lake McClure4368
Pine Flat Res5787
FOLSOM LAKE86 (+64)*110
*denotes change near recent lows

Oct 1, 2021

RESERVOIR% Capacity% Average
Shasta Lake2439
New Melones3563
Don Pedro5074
Lake Oroville2236
Trinity Lake2943
San Luis Res1226
New Bullards Bar4167
Lake McClure2045
Pine Flat Res2059
Folsom Lake2341

Sept 1, 2021

RESERVOIR% Capacity% Average
Shasta Lake2743
New Melones3865
Don Pedro5375
Lake Oroville2334
Trinity Lake3547
San Luis Res1332
New Bullards Bar4465
Lake McClure2545
Pine Flat Res2052
Folsom Lake2438

Top 10 California Reservoirs – Aug 1, 2021

RESERVOIR% Capacity% Average
Shasta Lake3245
New Melones4370
Don Pedro5774
Lake Orovillenot reporting
Trinity Lake4151
San Luis Res2042
New Bullards Bar4862
Lake McClure3050
Pine Flat Res2142
Folsom Lake2535

Top 10 California Reservoirs – July 4, 2021

RESERVOIR% Capacity% Average
Shasta Lake3848
New Melones5079
Don Pedro6177
Lake Oroville3139
Trinity Lake4755
San Luis Res3251
New Bullards Bar5362
Lake McClure3753
Pine Flat Res2841
Folsom Lake2935

Top 10 California Reservoirs – June 10, 2021

RESERVOIRStorage (Acre Feet)% Capacity% Average
Shasta Lake1,907,4814250
New Melones1,329,6075587
Don Pedro1,316,8166584
Lake Oroville1,291,5563744
Trinity Lake1,231,0525058
San Luis Res827,6174154
New Bullards Bar550,2145766
Lake McClure432,5434261
Pine Flat Res394,3373955
Folsom Lake346,3583542
data source: California Dept of Water Resources