Alameda County Lakes
Name (# of Reports) Last Update Location
Del Valle Lake (840) 5-14-2026 Livermore, CA
Don Castro Reservoir (66) 9-29-2022 Hayward, CA
Lake Chabot (488) 3-12-2025 Castro Valley, CA
Lake Temescal (25) 9-29-2022 Oakland, CA
Quarry Lakes (306) 12-16-2024 Fremont, CA
Shadow Cliffs Reservoir (343) 1-6-2025 Pleasanton, CA
 

Alpine County Lakes
Name (# of Reports) Last Update Location
Alpine Lake (178) 11-16-2025 Fairfax, CA
Blue Lake Lower (92) 5-6-2026 Hope Valley, CA
Blue Lake Upper (9) 5-20-2026 Hope Valley, CA
Burnside Lake [ESFR] (52) 7-3-2025 Markleville, CA
Caples Lake [ESFR] (360) 5-20-2026 Kirkwood, CA
Heenan Lake [ESFR] (86) 10-9-2025 Markleeville, CA
Highland Lakes (26) 7-17-2025 Lake Alpine, CA
Indian Creek Reservoir [ESFR] (311) 5-20-2026 Markleeville, CA
Kinney Reservoir [ESFR] (12) 6-30-2025 Markleeville, CA
Lost Lake (1) 7-17-2025 Bear Valley, CA
Mosquito Lakes (32) 6-30-2025 Lake Alpine, CA
Raymond Lake (Alpine County) (1) 8-24-2018 Markleeville, CA
Red Lake [ESFR] (148) 5-20-2026 Hope Valley, CA
Red Lakes (6) 8-15-2019 CA
Spicer Meadow Reservoir (86) 11-16-2025 Bear Valley, CA
Union Reservoir (8) 6-30-2025 Bear Valley, CA
Woods Lake [ESFR] (55) 1-14-2026 CA
 

Amador County Lakes
Name (# of Reports) Last Update Location
Bear River Reservoir Lower (26) 6-14-2025 Kit Carson, CA
Lake Amador (609) 5-21-2026 Ione, CA
Lake Camanche (762) 2-13-2026 Wallace, CA
Pardee Reservoir (437) 2-13-2026 Ione, CA
Silver Lake (121) 3-23-2026 Kirkwood, CA
 

Butte County Lakes
Name (# of Reports) Last Update Location
Lake Oroville (449) 4-4-2025 Oroville, CA
Paradise Lake (2) 4-4-2025 Magalia, CA
 

Calaveras County Lakes
Name (# of Reports) Last Update Location
Lake Camanche (762) 2-13-2026 Wallace, CA
New Hogan Reservoir (92) 10-21-2024 Valley Springs, CA
New Melones Reservoir (734) 4-30-2024 Angels Camp, CA
Pardee Reservoir (437) 2-13-2026 Ione, CA
Spicer Meadow Reservoir (86) 11-16-2025 Bear Valley, CA
Tulloch Reservoir (25) 7-16-2021 The Shores of Poker Flat, CA
White Pines Lakes (99) 7-29-2025 Arnold, CA
 

Contra Costa County Lakes
Name (# of Reports) Last Update Location
Contra Loma Reservoir (321) 2-18-2021 Antioch, CA
Lafayette Reservoir (282) 3-21-2016 Lafeyette, CA
Los Vaqueros Reservoir (518) 5-8-2026 Livermore, CA
San Pablo Reservoir (663) 3-28-2026 El Sobrante, CA
 

El Dorado County Lakes
Name (# of Reports) Last Update Location
Fallen Leaf Lake (1) 4-1-2009 El Dorado County, CA
Folsom Lake (109) 4-7-2021 Folsom Lake, CA
Ice House Reservoir (2) 4-28-2010 White Hall, CA
Indian Creek Reservoir [ESFR] (311) 5-20-2026 Markleeville, CA
Jenkinson Lake (100) 6-5-2017 CA
Kirkwood Lake (1) 9-28-2023 CA
Lake Tahoe (950) 5-20-2026 CA
Loon Lake (2) 6-2-2010 Tahoe National Forest, CA
Stumpy Meadows Reservoir (1) 3-28-2007 Georgetown, CA
Union Valley Reservoir (29) 5-28-2019 Placerville, CA
Upper & Lower Echo Lake (1) 8-31-2025 El Dorado County, CA
 

Fresno County Lakes
Name (# of Reports) Last Update Location
Brave Lake (1) 7-21-2016  
Edison Lake (40) 7-2-2015 CA
Huntington Lake (53) 7-2-2015 Lakeshore, CA
Millerton Lake (7) 4-9-2017 Friant, CA
Pine Flat Lake (49) 11-4-2024 Pine Flat Lake, CA
Shaver Lake (162) 5-23-2025 Shaver Lake, CA
 

Glenn County Lakes
Name (# of Reports) Last Update Location
Black Butte Lake (4) 4-4-2025 CA
 

Humboldt County Lakes
Name (# of Reports) Last Update Location
Blue Lake (1) 1-24-2019  
Fish Lake (1) 6-12-2017 Weitchpec, CA
 

Lake County Lakes
Name (# of Reports) Last Update Location
Blue Lake- Upper (2) 2-13-2026 Upper Lake, CA
Clear Lake (609) 2-21-2026 Clearlake, CA
Indian Valley Reservoir (1) 3-28-2007 CA
Pillsbury Reservoir (68) 12-11-2015 Potter Valley, CA
Upper Blue Lake (3) 3-30-2008 CA
 

Lassen County Lakes
Name (# of Reports) Last Update Location
Blue Lakes (68) 7-19-2019 CA
Butte Lake (47) 9-9-2015 CA
Crater Lake (2) 9-1-2016 Lassen County, CA
Eagle Lake (362) 12-6-2025 Susanville, CA
Emerald Lake (1) 5-22-2025 Lake Helen, CA
Horseshoe Lake (37) 7-13-2018 CA
Lake Eiler (1) 9-21-2016 Thousand Lakes WIlderness, CA
Long Lake (2) 9-1-2023 CA
Silver Lake (5) 6-12-2011  
 

Madera County Lakes
Name (# of Reports) Last Update Location
Bass Lake (98) 8-13-2015 Montague, CA
Eastman Lake (4) 12-3-2024 Raymond, CA
Manzanita Lake (110) 1-1-2026 CA
Millerton Lake (7) 4-9-2017 Friant, CA
Sotcher Lake (2) 11-14-2007 Mammoth Lakes, CA
Starkweather Lake (1) 8-7-2007 Mammoth Lakes, CA
Woods Lakes (1) 5-20-2026 CA
 

Marin County Lakes
Name (# of Reports) Last Update Location
Bon Tempe Reservoir (109) 11-22-2021 Mount Tamalpais, CA
Lake Alpine (7) 8-6-2018 CA
Lake Lagunitas (5) 3-11-2015 Fairfax, CA
Lake Lagunitas (1) 3-28-2007 Petaluma, CA
 

Mariposa County Lakes
Name (# of Reports) Last Update Location
Eastman Lake (4) 12-3-2024 Raymond, CA
Lake McClure (102) 10-15-2025 Coulterville, CA
Lake McSwain (214) 2-13-2025 Snelling, CA
 

Mendocino County Lakes
Name (# of Reports) Last Update Location
Howard Prairie Reservoir (1) 5-17-2016 OR
Lake Mendocino (123) 3-14-2016 CA
 

Merced County Lakes
Name (# of Reports) Last Update Location
Los Banos Reservoir (1) 5-23-2024 Los Banos, CA
San Luis Reservoir (291) 2-14-2023 Los Banos, CA
 

Modoc County Lakes
Name (# of Reports) Last Update Location
Annie Lake (1) 3-5-2025 Fort Bidwell, CA
Cave Lake (3) 6-2-2023 Modoc, CA
Delta Lake (36) 6-3-2018 CA
 

Mono County Lakes
Name (# of Reports) Last Update Location
Arrowhead Lake (Mammoth Lakes) (1) 7-27-2013 CA
Barney Lake (2) 5-23-2024 CA
Big Virginia Lake [ESFR] (28) 10-23-2025 Bridgeport, CA
Bridgeport Reservoir [ESFR] (1155) 5-20-2026 Bridgeport, CA
Convict Lake [ESFR] (483) 4-25-2026 Mammoth Lakes, CA
Crowley Lake [ESFR] (746) 2-5-2026 Mammoth Lakes, CA
Ellery Lake [ESFR] (6) 6-3-2025 Lee Vining, CA
Grant Lake [ESFR] (393) 5-22-2026 June Lake, CA
Gull Lake [ESFR] (209) 5-20-2026 June Lake, CA
June Lake [ESFR] (331) 4-27-2026 June Lake, CA
June Lake Loop [ESFR] (150) 4-4-2026 June Lake, CA
Kirman Lake [ESFR] (388) 5-17-2026 Mono County, CA
Lake George [ESFR] (13) 10-4-2025 Mammoth Lakes, CA
Lake Mamie [ESFR] (8) 6-22-2025 Mammoth Lakes, CA
Lake Mary [ESFR] (105) 5-3-2026 Mammoth Lakes, CA
Little Virginia Lake [ESFR] (12) 4-27-2024 Bridgeport, CA
Lundy Lake [ESFR] (33) 7-30-2025 Lee Vining, CA
Mammoth Lakes [ESFR] (203) 4-26-2023 Mammoth, CA
Mammoth Lakes Basin (32) 5-21-2025 CA
Parker Canyon Lake (3) 9-15-2016 AZ
Poore Lake [ESFR] (2) 7-7-2019 Sonora Junction, CA
Red Lake (49) 1-10-2018 CA
Saddlebag Lake [ESFR] (28) 5-15-2026 Lee Vining, CA
Silver Lake [ESFR] (437) 5-20-2026 June Lake, CA
Skelton Lake (1) 7-27-2013 CA
Tioga Lake [ESFR] (5) 8-3-2025 Tioga Pass, CA
Topaz Lake (415) 5-20-2026 Gardnerville, CA
Trumbull Lake [ESFR] (19) 4-25-2026 Bridgeport, CA
Twin Lake Lower [ESFR] (263) 5-20-2026 Bridgeport, CA
Twin Lake Upper [ESFR] (128) 5-22-2026 Bridgeport, CA
Twin Lakes (Bridgeport) [ESFR] (603) 5-17-2026 Bridgeport, CA
Twin Lakes (Mammoth Basin) [ESFR] (13) 8-26-2025 Mammoth Lakes, CA
Virginia Lakes [ESFR] (609) 5-17-2026 Bridgeport, CA
 

Monterey County Lakes
Name (# of Reports) Last Update Location
Lake San Antonio (140) 12-10-2024 Bradley, CA
 

Napa County Lakes
Name (# of Reports) Last Update Location
Lake Berryessa (643) 6-24-2024 Winters, CA
Lake Hennessey (9) 3-17-2016 Rutherford, CA
 

Nevada County Lakes
Name (# of Reports) Last Update Location
Boca Reservoir [ESFR] (369) 5-14-2026 Truckee, CA
Donner Lake [ESFR] (630) 5-20-2026 Truckee, CA
Englebright Reservoir (6) 3-9-2025 Smartsville, CA
Jackson Meadows Reservoir (235) 5-14-2026 CA
Lake Spaulding (1) 5-15-2017 Emigrant Gap, CA
Martis Creek Reservoir (1) 4-29-2022 Truckee, CA
Milton Reservoir (1) 7-16-2008 CA
Prosser Creek Reservoir (1) 5-14-2026 CA
Prosser Reservoir [ESFR] (305) 3-25-2026 Truckee, CA
Rollins Reservoir (3) 12-8-2015 Colfax, CA
Scotts Flat Reservoir (1) 5-30-2016 Nevada City, CA
 

Placer County Lakes
Name (# of Reports) Last Update Location
Folsom Lake (109) 4-7-2021 Folsom Lake, CA
Hell Hole Reservoir (1) 7-28-2017 CA
Lake Tahoe (950) 5-20-2026 CA
Rollins Reservoir (3) 12-8-2015 Colfax, CA
 

Plumas County Lakes
Name (# of Reports) Last Update Location
Antelope Lake (46) 2-19-2020 CA
Bucks Lake (135) 8-12-2023 CA
Frenchman Lake (344) 1-19-2026 Chilcot, CA
Lake Almanor (435) 5-4-2026 CA
Lake Davis [ESFR] (550) 5-14-2026 Portola, CA
Lassen Meadows Ranch (18) 7-18-2013 CA
Little Grass Valley Reservoir (1) 7-13-2022 CA
 

Sacramento County Lakes
Name (# of Reports) Last Update Location
Folsom Lake (109) 4-7-2021 Folsom Lake, CA
 

San Benito County Lakes
Name (# of Reports) Last Update Location
McAlpine Lake (83) 12-24-2021 San Juan Bautista, CA
 

San Francisco County Lakes
Name (# of Reports) Last Update Location
Lake Merced North (2) 2-13-2026 San Francisco, CA
 

San Joaquin County Lakes
Name (# of Reports) Last Update Location
Lake Camanche (762) 2-13-2026 Wallace, CA
Tracy Lake (210) 1-14-2015  
 

Santa Clara County Lakes
Name (# of Reports) Last Update Location
Anderson Reservoir (275) 6-22-2016 Morgan Hill, CA
Calero Lake (274) 6-8-2021 Morgan Hill, CA
Chesbro Reservoir (217) 6-8-2021 Morgan Hill, CA
Cottonwood Lake (2) 11-20-2024 CA
Coyote Lake (219) 6-8-2021 Gilroy, CA
Lexington Reservoir (61) 11-25-2015 Los Gatos, CA
Parkway Lake (1) 3-28-2007 CA
Uvas Reservoir (204) 6-8-2021 Morgan Hill, CA
 

Santa Cruz County Lakes
Name (# of Reports) Last Update Location
Loch Lomond (160) 3-3-2025 CA
Pinto Lake (2) 5-8-2008 Watsonville, CA
 

Shasta County Lakes
Name (# of Reports) Last Update Location
Baum Lake (357) 5-14-2026 Cassel, CA
Grace Lake (3) 9-3-2016 Shingletown, CA
Iron Canyon Reservoir (71) 5-14-2026 Deadlun, CA
Keswick Reservoir (81) 3-27-2025 Redding, CA
Kilarc Reservoir (5) 1-8-2020 CA
Lake Britton (29) 4-12-2008 CA
Lake Christine (17) 11-30-2015 CA
Lake McCloud (2) 8-26-2015 CA
Lake McCumber (8) 11-8-2016 CA
McCumber Reservoir (48) 8-23-2018 Viola, CA
Mount Shasta Fish Hatchery (7) 6-12-2024 Mt Shasta, CA
Nora Lake (1) 7-10-2010 Shingletown, CA
Shasta Lake (1260) 5-16-2026 Shasta Lake, CA
Whiskeytown Lake (265) 6-18-2025 Whiskeytown, CA
 

Sierra County Lakes
Name (# of Reports) Last Update Location
Boca Reservoir [ESFR] (369) 5-14-2026 Truckee, CA
Gold Lake (64) 5-14-2026 Graeagle, CA
Jackson Meadows Reservoir (235) 5-14-2026 CA
Packer Lake (20) 9-4-2025 CA
Salmon Lake (2) 11-25-2020  
Salmon Lake (26) 8-16-2020 CA
Sardine Lake-Lower (103) 10-16-2025 Graeagle, CA
Sardine Lake-Upper (2) 7-30-2025 Graeagle, CA
Snag Lake (20) 11-25-2020 Sierra City, CA
Stampede Reservoir [ESFR] (487) 5-14-2026 Truckee, CA
 

Siskiyou County Lakes
Name (# of Reports) Last Update Location
Bass Lake (98) 8-13-2015 Montague, CA
Iron Gate Reservoir (5) 5-13-2019 Hornbrook, CA
Lake Shastina (2) 7-17-2024 CA
McCloud Reservoir (136) 3-20-2026 McCloud, CA
Medicine Lake (2) 8-4-2006 Volcano, CA
Siskiyou Lake (184) 5-10-2026 Mount Shatsa, CA
Trout Lake (8) 6-11-2020 Montague, CA
 

Solano County Lakes
Name (# of Reports) Last Update Location
Lake Chabot (488) 3-12-2025 Castro Valley, CA
 

Sonoma County Lakes
Name (# of Reports) Last Update Location
Lake Sonoma (211) 5-11-2025 Healdsburg, CA
 

Stanislaus County Lakes
Name (# of Reports) Last Update Location
Modesto Reservoir (2) 2-25-2021 Waterford, CA
Woodward Reservoir (1) 2-25-2021 Oakdale, CA
 

Tehama County Lakes
Name (# of Reports) Last Update Location
Black Butte Lake (4) 4-4-2025 CA
 

Trinity County Lakes
Name (# of Reports) Last Update Location
Lewiston Lake (349) 5-20-2026 Lewiston, CA
Ruth Lake (7) 5-9-2024 Ruth, CA
Skycrest Lake (1) 6-8-2017 Burnt Ranch, CA
Trinity Lake (204) 6-21-2025 Trinity Center, CA
 

Tulare County Lakes
Name (# of Reports) Last Update Location
Del Lago Park Lake (1) 11-25-2022 Tulare, CA
Eagle Canyon Lake (2) 12-9-2019 CA
Lake Kaweah (221) 5-15-2026 CA
Lake Success (222) 5-15-2026 CA
 

Tuolumne County Lakes
Name (# of Reports) Last Update Location
Don Pedro Reservoir (232) 1-9-2026 La Grange, CA
Hetch Hetchy Reservoir (4) 11-20-2023 Yosemite, CA
Kennedy Meadows (10) 12-16-2007 CA
New Melones Reservoir (734) 4-30-2024 Angels Camp, CA
Pinecrest Lake (2) 5-21-2025 Pinecrest, CA
Tulloch Reservoir (25) 7-16-2021 The Shores of Poker Flat, CA
 

Yuba County Lakes
Name (# of Reports) Last Update Location
Bullards Bar Reservoir (191) 3-29-2025 Dobbins, CA
Collins Lake (518) 2-13-2026 Browns Valley, CA
Englebright Reservoir (6) 3-9-2025 Smartsville, CA