California / Waters /

Clear Lake

Lake in California, near Buckingham Park, Clearlake, Clearlake Oaks, Glenhaven, Kelseyville, Lakeport, Lucerne, Nice, Riviera Estates and Soda Bay

No current status shown

No current status is assigned to this water outline. Check the water page for reports and any estimated downstream stretches. Why this status, and its source

Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.

Square boat markers mark boat launches listed by OpenBoatLaunch. Larger round markers with a label mark beach and other official advisories nearby.

Bookmark this water page and check it before each trip · Report a missing notice or error

About this status

No current status shown: no report we track sets a status on this water now; how statuses work. No status does not mean the water is safe. Follow posted signs and local health advice.

Sources checked: Surface Water - Freshwater Harmful Algal Blooms (last successful check 2026-11-06 08:37 UTC). Status by DirtyWaterWatch, updated 2026-11-06 09:03 UTC. · Updated Nov 6, 2026, 1:03 AM PST

The last 90 days

Last 90 days, hour by hour. Red: discharge or advisory reported. Amber: caution. Hatched amber: end not confirmed. Plum: algal bloom advisory. Red or amber with a light line inside: beach advisory or caution. Dotted: monthly report (days with discharge, dates not given). Grey: no current status on the water outline. Purple hatching: a status resting on a source that could not be checked on schedule.

No discharge, advisory or caution periods are shown for this water in this time span. Check downstream stretches and source coverage.

Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-06 09:03 UTC.

Reported discharges over time

Historical charts are not available here. See the reports and sources on this page.

Reports linked to Clear Lake

Cyanobacteria (harmful blue-green algae) can make water unfit for contact; the issuing authority decides when its advisory ends.

Reports linked to Clear Lake, newest first
When	Report	Status
Jul 6	California State Water Resources Control Board (FHAB program) · Buckingham Park · Algae advisory · volume not reported report · notice · map	listed
Jul 6	California State Water Resources Control Board (FHAB program) · north drive · Algae advisory · volume not reported report · notice · map	listed
Jul 3	California State Water Resources Control Board (FHAB program) · Soda Bay · Algae advisory · volume not reported report · notice · map	listed
Jul 3	California State Water Resources Control Board (FHAB program) · Monitor Point · Algae advisory · volume not reported report · notice · map	listed
Jul 2	California State Water Resources Control Board (FHAB program) · Soda Bay · Algae advisory · volume not reported report · notice · map	listed
Sep 9 ’25	California State Water Resources Control Board (FHAB program) · Soda Bay · Algae advisory · volume not reported report · notice · map	listed
Sep 9 ’25	California State Water Resources Control Board (FHAB program) · Jones bay · Algae advisory · volume not reported report · notice · map	listed
Jul 31 ’25	California State Water Resources Control Board (FHAB program) · Jago Bay · Algae advisory · volume not reported report · notice · map	listed
Jun 26 ’25	California State Water Resources Control Board (FHAB program) · Clear Lake Keys near Ketch Court · Algae advisory · volume not reported report · notice · map	listed
Apr 2 ’24	California State Water Resources Control Board (FHAB program) · Library Park · Algae advisory · volume not reported report · notice · map	listed
Jun 14 ’22	California State Water Resources Control Board (FHAB program) · Lily Cove (LC01) · Algae advisory · volume not reported report · notice · map	listed
May 19 ’22	California State Water Resources Control Board (FHAB program) · West of Sulphur Bank Mercury Mine (SBMMEL01) · Algae advisory · volume not reported report · notice · map	listed
May 19 ’22	California State Water Resources Control Board (FHAB program) · Rodman Slough (RODS) · Algae advisory · volume not reported report · notice · map	listed
May 19 ’22	California State Water Resources Control Board (FHAB program) · Clearlake Keys (KEYS03) · Algae advisory · volume not reported report · notice · map	listed
May 19 ’22	California State Water Resources Control Board (FHAB program) · County Park (CP) · Algae advisory · volume not reported report · notice · map	listed
May 19 ’22	California State Water Resources Control Board (FHAB program) · Horseshoe Bend (HB) · Algae advisory · volume not reported report · notice · map	listed
May 19 ’22	California State Water Resources Control Board (FHAB program) · Glenhaven (GH) · Algae advisory · volume not reported report · notice · map	listed
May 17 ’22	California State Water Resources Control Board (FHAB program) · Soda Bay Cove (CLV7) · Algae advisory · volume not reported report · notice · map	listed
May 10 ’22	California State Water Resources Control Board (FHAB program) · Jago Bay (JB) · Algae advisory · volume not reported report · notice · map	listed
May 10 ’22	California State Water Resources Control Board (FHAB program) · Austin Park (AP01) · Algae advisory · volume not reported report · notice · map	listed
Feb 21 ’22	California State Water Resources Control Board (FHAB program) · Lower Arm, Center of the Lake (DWR site CL-3) · Algae advisory · volume not reported report · notice · map	listed
Feb 21 ’22	California State Water Resources Control Board (FHAB program) · Oaks Arm, UCD site (OA-04) · Algae advisory · volume not reported report · notice · map	listed
Feb 21 ’22	California State Water Resources Control Board (FHAB program) · Oaks Arm, Center of the Lake (DWR Site CL-4) · Algae advisory · volume not reported report · notice · map	listed
Feb 21 ’22	California State Water Resources Control Board (FHAB program) · Redbud Park (RED01) · Algae advisory · volume not reported report · notice · map	listed
Feb 21 ’22	California State Water Resources Control Board (FHAB program) · Lakeport 1st Street Ramp (LPTNT) · Algae advisory · volume not reported report · notice · map	listed

Sources: Surface Water - Freshwater Harmful Algal Blooms, retrieved 2026-11-06 03:07 UTC. A report's record id and times show when you hover or focus its "report" link.

Download these reports as CSV

Showing the latest 25 records of 71 records.See them all with filters.

All reports in California by year: 2026 (5 here) · 2025 (4 here) · 2024 (1 here) · 2022 (21 here) · 2021 (15 here) · 2020 (24 here) · 2017 (1 here)

Wastewater outlets on this water

Outfall: a pipe or outlet where wastewater enters a water body.

No wastewater outlet in our records is linked to this water.

Boat launches

5th St - Lakeport · Boat ramp
Clear Lake Lakeside County Park, Kelseyville · Boat ramp
Clear Lake State Park Boat Ramp, Kelseyville · Boat ramp
Clearlake Oaks Boat Launch · Boat ramp
H.V. Keeling County Park, Nice · Boat ramp
Holiday Harbor Marina (Nice) · Boat ramp
Konocti Harbor Resort and Spa (No longer in business), Kelseyville · Boat ramp
Lakeport 3rd Street Launch · Boat ramp
Lucerne Harbor County Park · Boat ramp
Mike Thompson Harbor, Clearlake · Boat ramp

Source: OpenBoatLaunch launch records (public agency data and OpenStreetMap, Open Database License). · Clear Lake on OpenBoatLaunch

Nearby waters

Forbes Creek, CA No current status shown about 14 km away
Russian River, CA No current status shown about 25 km away
Lake Mendocino, CA No current status shown about 39 km away
East Park Reservoir, CA No current status shown about 41 km away
Lake Pillsbury, CA No current status shown about 45 km away

Sources covering this water

Surface Water - Freshwater Harmful Algal Blooms · Latest check succeeded · Last successful check: 2026-11-06 08:37 UTC

71 records linked to this water. Updated Nov 6, 2026, 1:03 AM PST.