Alameda County Lakes
Name (# of Reports) Last Update Location
Del Valle Lake (835) 11-19-2025 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 (131) 11-16-2025 Lake Alpine, CA
Blue Lake Lower (89) 11-13-2025 Hope Valley, CA
Blue Lake Upper (8) 5-28-2021 Hope Valley, CA
Burnside Lake [ESFR] (52) 7-3-2025 Markleville, CA
Caples Lake [ESFR] (350) 12-3-2025 Kirkwood, CA
Heenan Lake [ESFR] (86) 10-9-2025 Markleeville, CA
Highland Lakes (26) 7-17-2025 Lake Alpine, CA
Indian Creek Reservoir [ESFR] (297) 12-3-2025 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] (138) 12-3-2025 Hope Valley, CA
Union Reservoir (8) 6-30-2025 Bear Valley, CA
Woods Lake [ESFR] (54) 8-27-2025 CA
 

Amador County Lakes
Name (# of Reports) Last Update Location
Bear River Reservoir Lower (26) 6-14-2025 Kit Carson, CA
Lake Amador (582) 12-11-2025 Ione, CA
Lake Camanche (742) 11-3-2025 Wallace, CA
Pardee Reservoir (434) 9-16-2025 Ione, CA
Silver Lake (119) 10-9-2025 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 (742) 11-3-2025 Wallace, CA
New Hogan Reservoir (92) 10-21-2024 Valley Springs, CA
New Melones Reservoir (734) 4-30-2024 Angels Camp, CA
Pardee Reservoir (434) 9-16-2025 Ione, 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 (506) 12-5-2025 Livermore, CA
San Pablo Reservoir (657) 10-30-2025 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
Jenkinson Lake (100) 6-5-2017 CA
Kirkwood Lake (1) 9-28-2023 CA
Lake Tahoe [ESFR] (936) 12-3-2025  
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
Edison Lake (40) 7-2-2015  
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
Fish Lake (1) 6-12-2017 Weitchpec, CA
 

Lake County Lakes
Name (# of Reports) Last Update Location
Blue Lake- Upper (1) 3-31-2025 Upper Lake, CA
Clear Lake (607) 11-8-2025 Clearlake, CA
Indian Valley Reservoir (1) 3-28-2007 CA
Pillsbury Reservoir (68) 12-11-2015 Potter Valley, CA
 

Lassen County Lakes
Name (# of Reports) Last Update Location
Butte Lake (47) 9-9-2015  
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
Lake Eiler (1) 9-21-2016 Thousand Lakes WIlderness, CA
Long Lake (2) 9-1-2023 CA
 

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 (109) 11-18-2025 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
 

Marin County Lakes
Name (# of Reports) Last Update Location
Bon Tempe Reservoir (109) 11-22-2021 Mount Tamalpais, 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
Lake Mendocino (123) 3-14-2016  
 

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, County
Delta Lake (36) 6-3-2018 CA
 

Mono County Lakes
Name (# of Reports) Last Update Location
Barney Lake (2) 5-23-2024  
Big Virginia Lake [ESFR] (28) 10-23-2025 Bridgeport, CA
Bridgeport Reservoir [ESFR] (1134) 11-13-2025 Bridgeport, CA
Convict Lake [ESFR] (481) 11-14-2025 Mammoth Lakes, CA
Crowley Lake [ESFR] (745) 10-19-2025 Mammoth Lakes, CA
Ellery Lake [ESFR] (6) 6-3-2025 Lee Vining, CA
Grant Lake [ESFR] (385) 10-2-2025 June Lake, CA
Gull Lake [ESFR] (206) 9-24-2025 June Lake, CA
June Lake [ESFR] (326) 10-7-2025 June Lake, CA
June Lake Loop [ESFR] (148) 8-13-2025 June Lake, CA
Kirman Lake [ESFR] (387) 11-16-2025 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] (103) 10-6-2025 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
Poore Lake [ESFR] (2) 7-7-2019 Sonora Junction, CA
Saddlebag Lake [ESFR] (27) 9-20-2025 Lee Vining, CA
Silver Lake [ESFR] (434) 10-13-2025 June Lake, CA
Tioga Lake [ESFR] (5) 8-3-2025 Tioga Pass, CA
Topaz Lake [ESFR] (406) 12-9-2025 Gardnerville, NV
Trumbull Lake [ESFR] (18) 9-13-2025 Bridgeport, CA
Twin Lake Lower [ESFR] (249) 10-31-2025 Bridgeport, CA
Twin Lake Upper [ESFR] (123) 10-21-2025 Bridgeport, CA
Twin Lakes (Bridgeport) [ESFR] (599) 11-16-2025 Bridgeport, CA
Twin Lakes (Mammoth Basin) [ESFR] (13) 8-26-2025 Mammoth Lakes, CA
Virginia Lakes [ESFR] (605) 11-16-2025 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] (364) 10-23-2025 Truckee, CA
Donner Lake [ESFR] (616) 11-23-2025 Truckee, CA
Englebright Reservoir (6) 3-9-2025 Smartsville, CA
Jackson Meadows Reservoir (230) 10-23-2025  
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 Reservoir [ESFR] (301) 10-23-2025 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
Lake Tahoe [ESFR] (936) 12-3-2025  
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 (28) 8-12-2023 Quincy, CA
Frenchman Lake (328) 11-13-2025 Chilcot, CA
Lake Almanor (433) 9-2-2025 CA
Lake Davis [ESFR] (543) 10-16-2025 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 (1) 11-10-2025 San Francisco, CA
 

San Joaquin County Lakes
Name (# of Reports) Last Update Location
Lake Camanche (742) 11-3-2025 Wallace, CA
 

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 (343) 12-3-2025 Cassel, CA
Grace Lake (3) 9-3-2016 Shingletown, CA
Iron Canyon Reservoir (69) 4-16-2025 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
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 (1239) 12-3-2025 Shasta Lake, CA
Whiskeytown Lake (265) 6-18-2025 Whiskeytown, CA
 

Sierra County Lakes
Name (# of Reports) Last Update Location
Boca Reservoir [ESFR] (364) 10-23-2025 Truckee, CA
Gold Lake (61) 10-16-2025 Graeagle, CA
Jackson Meadows Reservoir (230) 10-23-2025  
Packer Lake (20) 9-4-2025 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] (482) 10-23-2025 Truckee, CA
 

Siskiyou County Lakes
Name (# of Reports) Last Update Location
Bass Lake (98) 8-13-2015 Montague, CA
Lake Shastina (2) 7-17-2024 CA
McCloud Reservoir (133) 11-18-2025 McCloud, CA
Medicine Lake (2) 8-4-2006 Volcano, CA
Siskiyou Lake (177) 12-7-2025 Mount Shatsa, 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 (338) 12-3-2025 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
Lake Kaweah (201) 12-12-2025 CA
Lake Success (202) 12-12-2025 CA
 

Tuolumne County Lakes
Name (# of Reports) Last Update Location
Don Pedro Reservoir (231) 9-18-2024 La Grange, CA
Hetch Hetchy Reservoir (4) 11-20-2023 Yosemite, 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 (190) 3-29-2025 Dobbins, CA
Collins Lake (512) 11-18-2025 Browns Valley, CA
Englebright Reservoir (6) 3-9-2025 Smartsville, CA