Algae - Detail search

Detailed search for your lake

This database contains the most current toxicity data available. All instances of values above the recreational guidelines are kept as up to date as possible, but values below the guidelines may be somewhat delayed in entry.Since there is a lag time from the date of sample to the date of analysis, be sure to check the sample date when looking at data or before you use the lake. Remember to use caution and avoid scums. "When in doubt, stay out!"

Your local jurisdiction may have more specific information about your lake. Questions? Contact toxicalgae at Department of Ecology.

If a lake is not listed, it has not been tested for toxic algae through the Ecology program.

The pins on the map represent the center of small lakes, regardless of where the sample was taken. To find more precise location information, download the toxin data and click the "view scum info" link. That is where specific sampling location information will be if it was provided. On larger lakes, (such as Lake Washington, Moses Lake and Potholes) pins represent the location of the sample if provided.

Toxin:

County	WRIA Number	Site	Collect Date	Parameter	Toxin Conc. (µg/L)	MDL (µg/L)	Above State Guideline	Additional Information	Sample Location	Ecology Tracking Number
Whitman	35	Lower Granite Reservoir	10/27/2025	Anatoxin-a	<MDL	0.010	No	No	Granite Point	LOWEWHIT344_25_473
Whitman	35	Lower Granite Reservoir	10/27/2025	Microcystin	<MDL	0.300	No	No	Granite Point	LOWEWHIT344_25_473
Whitman	35	Lower Granite Reservoir	10/20/2025	Anatoxin-a	<MDL	0.010	No	No	Lower Granite Reservoir	LOWEWHIT344_25_459
Whitman	35	Lower Granite Reservoir	10/20/2025	Microcystin	<MDL	0.300	No	No	Lower Granite Reservoir	LOWEWHIT344_25_459
Whitman	35	Lower Granite Reservoir	10/06/2025	Anatoxin-a	<MDL	0.010	No	No		LOWEWHIT344_25_419
Whitman	35	Lower Granite Reservoir	10/06/2025	Anatoxin-a	<MDL	0.010	No	No	Wawawai Landing	LOWEWHIT344_25_418
Whitman	35	Lower Granite Reservoir	10/06/2025	Microcystin	159.000	0.300	Yes	No	Wawawai Landing	LOWEWHIT344_25_418
Whitman	35	Lower Granite Reservoir	10/06/2025	Microcystin	268.000	0.300	Yes	No		LOWEWHIT344_25_419
Whitman	35	Lower Granite Reservoir	09/29/2025	Anatoxin-a	<MDL	0.010	No	No	Granite Point	LOWEWHIT344_25_398
Whitman	35	Lower Granite Reservoir	09/29/2025	Anatoxin-a	<MDL	0.010	No	No	Wawawai Landing	LOWEWHIT344_25_397
Whitman	35	Lower Granite Reservoir	09/29/2025	Microcystin	84.200	0.300	Yes	No	Wawawai Landing	LOWEWHIT344_25_397
Whitman	35	Lower Granite Reservoir	09/29/2025	Microcystin	90.800	0.300	Yes	No	Granite Point	LOWEWHIT344_25_398
Whitman	35	Lower Granite Reservoir	09/23/2025	Anatoxin-a	<MDL	0.010	No	No	Wawawai Landing	LOWEWHIT344_25_385
Whitman	35	Lower Granite Reservoir	09/23/2025	Microcystin	391.000	0.300	Yes	No	Wawawai Landing	LOWEWHIT344_25_385
Whitman	35	Lower Granite Reservoir	09/08/2025	Anatoxin-a	<MDL	0.010	No	No	Wawawai Landing	LOWEWHIT344_25_323
Whitman	35	Lower Granite Reservoir	09/08/2025	Microcystin	121.000	0.300	Yes	No	Wawawai Landing	LOWEWHIT344_25_323
Whitman	35	Lower Granite Reservoir	09/02/2025	Anatoxin-a	<MDL	0.010	No	No	Blyton Landing	LOWEWHIT344_25_311
Whitman	35	Lower Granite Reservoir	09/02/2025	Anatoxin-a	0.028	0.010	No	No	Wawawai	LOWEWHIT344_25_307
Whitman	35	Lower Granite Reservoir	09/02/2025	Microcystin	58.500	0.300	Yes	No	Wawawai	LOWEWHIT344_25_307
Whitman	35	Lower Granite Reservoir	09/02/2025	Microcystin	3.750	0.300	No	No	Blyton Landing	LOWEWHIT344_25_311
Whitman	35	Lower Granite Reservoir	08/25/2025	Anatoxin-a	<MDL	0.010	No	No		LOWEWHIT344_25_268
Whitman	35	Lower Granite Reservoir	08/25/2025	Microcystin	3.480	0.300	No	No		LOWEWHIT344_25_268
Whitman	35	Lower Granite Reservoir	10/22/2024	Anatoxin-a	<MDL	0.010	No	View	Wawawai Landing (main channel)	LOWEWHIT344_24_419
Whitman	35	Lower Granite Reservoir	10/22/2024	Microcystin	<MDL	0.300	No	View	Wawawai Landing (main channel)	LOWEWHIT344_24_419
Whitman	35	Lower Granite Reservoir	10/15/2024	Anatoxin-a	<MDL	0.010	No	View	Wawawai Landing (main channel)	LOWEWHIT344_24_400
Whitman	35	Lower Granite Reservoir	10/15/2024	Microcystin	<MDL	0.300	No	View	Wawawai Landing (main channel)	LOWEWHIT344_24_400
Whitman	35	Lower Granite Reservoir	09/30/2024	Anatoxin-a	0.024	0.010	No	View	Wawawai Landing (main channel)	LOWEWHIT344_24_343
Whitman	35	Lower Granite Reservoir	09/30/2024	Microcystin	156.000	0.300	Yes	View	Wawawai Landing (main channel)	LOWEWHIT344_24_343
Whitman	35	Lower Granite Reservoir	09/24/2024	Anatoxin-a	0.015	0.013	No	View	Near Wawawai Landing	LOWEWHIT344_24_330
Whitman	35	Lower Granite Reservoir	09/24/2024	Microcystin	1440.000	0.300	Yes	View	Near Wawawai Landing	LOWEWHIT344_24_330
Whitman	35	Lower Granite Reservoir	09/24/2024	Saxitoxin	0.036	0.022	No	View	Near Wawawai Landing	LOWEWHIT344_24_330
Whitman	35	Lower Granite Reservoir	09/18/2024	Anatoxin-a	0.091	0.010	No	View	Near Blyotn Landing	LOWEWHIT344_24_314
Whitman	35	Lower Granite Reservoir	09/18/2024	Anatoxin-a	0.084	0.010	No	View	Near Wawawai Landing	LOWEWHIT344_24_315
Whitman	35	Lower Granite Reservoir	09/18/2024	Microcystin	703.000	0.300	Yes	View	Near Wawawai Landing	LOWEWHIT344_24_315
Whitman	35	Lower Granite Reservoir	09/18/2024	Microcystin	2000.000	0.300	Yes	View	Near Blyotn Landing	LOWEWHIT344_24_314
Whitman	35	Lower Granite Reservoir	09/03/2024	Anatoxin-a	<MDL	0.010	No	View	Wawawai area	LOWEWHIT344_24_247
Whitman	35	Lower Granite Reservoir	09/03/2024	Anatoxin-a	<MDL	0.010	No	View	Blyton Landing	LOWEWHIT344_24_249
Whitman	35	Lower Granite Reservoir	09/03/2024	Microcystin	14.900	0.300	Yes	View	Blyton Landing	LOWEWHIT344_24_249
Whitman	35	Lower Granite Reservoir	09/03/2024	Microcystin	5.340	0.300	No	View	Wawawai area	LOWEWHIT344_24_247
Whitman	35	Lower Granite Reservoir	09/03/2024	Saxitoxin	<MDL	0.022	No	View	Wawawai area	LOWEWHIT344_24_247
Whitman	35	Lower Granite Reservoir	09/03/2024	Saxitoxin	<MDL	0.022	No	View	Blyton Landing	LOWEWHIT344_24_249
Whitman	35	Lower Granite Reservoir	08/26/2024	Anatoxin-a	<MDL	0.010	No	View		LOWEWHIT344_24_214
Whitman	35	Lower Granite Reservoir	08/26/2024	Microcystin	525.000	0.300	Yes	View		LOWEWHIT344_24_214
Whitman	35	Lower Granite Reservoir	08/20/2024	Anatoxin-a	<MDL	0.010	No	View	Central river channel	LOWEWHIT344_24_196
Whitman	35	Lower Granite Reservoir	08/20/2024	Anatoxin-a	<MDL	0.010	No	View		LOWEWHIT344_24_195
Whitman	35	Lower Granite Reservoir	08/20/2024	Microcystin	<MDL	0.300	No	View		LOWEWHIT344_24_195
Whitman	35	Lower Granite Reservoir	08/20/2024	Microcystin	<MDL	0.300	No	View	Central river channel	LOWEWHIT344_24_196
Whitman	35	Lower Granite Reservoir	08/12/2024	Anatoxin-a	<MDL	0.010	No	No		LOWEWHIT344_24_153
Whitman	35	Lower Granite Reservoir	08/12/2024	Microcystin	31.700	0.300	Yes	No		LOWEWHIT344_24_153
Whitman	35	Lower Granite Reservoir	06/24/2024	Anatoxin-a	<MDL	0.010	No	View	Wawawai Landing	LOWEWHIT344_24_028
Whitman	35	Lower Granite Reservoir	06/24/2024	Microcystin	<MDL	0.300	No	View	Wawawai Landing	LOWEWHIT344_24_028
Whitman	35	Lower Granite Reservoir	12/18/2023	Anatoxin-a	<MDL	0.165	No	No		LOWEWHIT344
Whitman	35	Lower Granite Reservoir	12/18/2023	Microcystin	1.920	0.150	No	No		LOWEWHIT344
Whitman	35	Lower Granite Reservoir	11/06/2023	Anatoxin-a	<MDL	0.165	No	No	Wawawai	LOWEWHIT344_23_437
Whitman	35	Lower Granite Reservoir	11/06/2023	Microcystin	17.700	0.150	Yes	No	Wawawai	LOWEWHIT344_23_437
Whitman	35	Lower Granite Reservoir	10/30/2023	Anatoxin-a	<MDL	0.165	No	No	Wawawai County Park	LOWEWHIT344_23_415
Whitman	35	Lower Granite Reservoir	10/30/2023	Microcystin	9.260	0.150	Yes	No	Wawawai County Park	LOWEWHIT344_23_415
Whitman	35	Lower Granite Reservoir	10/24/2023	Anatoxin-a	<MDL	0.010	No	View	Wawawai County Park	LOWEWHIT344_23_400
Whitman	35	Lower Granite Reservoir	10/24/2023	Microcystin	1.810	0.150	No	View	Wawawai County Park	LOWEWHIT344_23_400
Whitman	35	Lower Granite Reservoir	10/18/2023	Anatoxin-a	<MDL	0.010	No	View	wawawai	LOWEWHIT344_23_387
Whitman	35	Lower Granite Reservoir	10/18/2023	Microcystin	62.600	0.150	Yes	View	wawawai	LOWEWHIT344_23_387
Whitman	35	Lower Granite Reservoir	10/09/2023	Anatoxin-a	<MDL	0.010	No	No	Wawawai Landing	LOWEWHIT344_23_349
Whitman	35	Lower Granite Reservoir	10/09/2023	Microcystin	139.000	0.150	Yes	No	Wawawai Landing	LOWEWHIT344_23_349
Whitman	35	Lower Granite Reservoir	10/02/2023	Anatoxin-a	<MDL	0.010	No	No	Wawawai Landing	LOWEWHIT344_23_337
Whitman	35	Lower Granite Reservoir	10/02/2023	Microcystin	10.000	0.150	Yes	No	Wawawai Landing	LOWEWHIT344_23_337
Whitman	35	Lower Granite Reservoir	09/25/2023	Anatoxin-a	<MDL	0.010	No	No	Boyer Park	LOWEWHIT344_23_318
Whitman	35	Lower Granite Reservoir	09/25/2023	Anatoxin-a	<MDL	0.010	No	No	Granite Point	LOWEWHIT344_23_317
Whitman	35	Lower Granite Reservoir	09/25/2023	Microcystin	<MDL	0.150	No	No	Granite Point	LOWEWHIT344_23_317
Whitman	35	Lower Granite Reservoir	09/25/2023	Microcystin	<MDL	0.150	No	No	Boyer Park	LOWEWHIT344_23_318
Whitman	35	Lower Granite Reservoir	09/11/2023	Anatoxin-a	0.016	0.010	No	No	Wawawai County Park	LOWEWHIT344_23_262
Whitman	35	Lower Granite Reservoir	09/11/2023	Anatoxin-a	<MDL	0.010	No	No	Granite Point	LOWEWHIT344_23_260
Whitman	35	Lower Granite Reservoir	09/11/2023	Cylindrospermopsin	<MDL	0.025	No	No	Granite Point	LOWEWHIT344_23_260
Whitman	35	Lower Granite Reservoir	09/11/2023	Cylindrospermopsin	<MDL	0.025	No	No	Wawawai County Park	LOWEWHIT344_23_262
Whitman	35	Lower Granite Reservoir	09/11/2023	Microcystin	10.000	0.300	Yes	No	Wawawai County Park	LOWEWHIT344_23_262
Whitman	35	Lower Granite Reservoir	09/11/2023	Microcystin	0.733	0.300	No	No	Granite Point	LOWEWHIT344_23_260
Whitman	35	Lower Granite Reservoir	09/11/2023	Saxitoxin	<MDL	0.020	No	No	Granite Point	LOWEWHIT344_23_260
Whitman	35	Lower Granite Reservoir	09/11/2023	Saxitoxin	<MDL	0.020	No	No	Wawawai County Park	LOWEWHIT344_23_262
Whitman	35	Lower Granite Reservoir	09/20/2022	Anatoxin-a	<MDL	0.010	No	View	Several miles upstream of Blyton boat launch to Wawawai boat launch	LOWEWHIT344_22_328
Whitman	35	Lower Granite Reservoir	09/20/2022	Microcystin	424.000	0.150	Yes	View	Several miles upstream of Blyton boat launch to Wawawai boat launch	LOWEWHIT344_22_328
Whitman	35	Lower Granite Reservoir	09/06/2022	Anatoxin-a	<MDL	0.165	No	View	Blyton Landing boat ramp	LOWEWHIT344_22_295
Whitman	35	Lower Granite Reservoir	09/06/2022	Microcystin	1.340	0.150	No	View	Blyton Landing boat ramp	LOWEWHIT344_22_295
Whitman	35	Lower Granite Reservoir	09/08/2021	Anatoxin-a	<MDL	0.010	No	View	Wawawai Landing	LOWEWHIT344_21_354
Whitman	35	Lower Granite Reservoir	09/08/2021	Cylindrospermopsin	<MDL	0.025	No	View	Wawawai Landing	LOWEWHIT344_21_354
Whitman	35	Lower Granite Reservoir	09/08/2021	Microcystin	2.940	0.150	No	View	Wawawai Landing	LOWEWHIT344_21_354
Whitman	35	Lower Granite Reservoir	09/08/2021	Saxitoxin	<MDL	0.020	No	View	Wawawai Landing	LOWEWHIT344_21_354
Whitman	35	Lower Granite Reservoir	09/24/2020	Anatoxin-a	1.100	0.010	Yes	View	Lower Granite Forebay, Wawawai inside boat ramp	LOWEWHIT344_20_408
Whitman	35	Lower Granite Reservoir	09/24/2020	Anatoxin-a	<MDL	0.010	No	View	Lower Granite Forebay, Wawawai outside boat ramp	LOWEWHIT344_20_409
Whitman	35	Lower Granite Reservoir	09/24/2020	Microcystin	0.295	0.150	No	View	Lower Granite Forebay, Wawawai outside boat ramp	LOWEWHIT344_20_409
Whitman	35	Lower Granite Reservoir	09/24/2020	Microcystin	401.000	0.150	Yes	View	Lower Granite Forebay, Wawawai inside boat ramp	LOWEWHIT344_20_408
Whitman	35	Lower Granite Reservoir	09/17/2020	Anatoxin-a	0.675	0.010	No	View	Lower Granite Reservoir at Wawawai	LOWEWHIT344_20_386
Whitman	35	Lower Granite Reservoir	09/17/2020	Cylindrospermopsin	<MDL	0.025	No	View	Lower Granite Reservoir at Wawawai	LOWEWHIT344_20_386
Whitman	35	Lower Granite Reservoir	09/17/2020	Microcystin	38.200	0.150	Yes	View	Lower Granite Reservoir at Wawawai	LOWEWHIT344_20_386
Whitman	35	Lower Granite Reservoir	09/17/2020	Saxitoxin	<MDL	0.020	No	View	Lower Granite Reservoir at Wawawai	LOWEWHIT344_20_386
Whitman	35	Lower Granite Reservoir	10/17/2019	Anatoxin-a	<MDL	0.010	No	No		LOWEWHIT344_19_408
Whitman	35	Lower Granite Reservoir	10/17/2019	Microcystin	<MDL	0.150	No	No		LOWEWHIT344_19_408
Whitman	35	Lower Granite Reservoir	09/11/2019	Anatoxin-a	<MDL	0.010	No	No		LOWEWHIT344_19_283
Whitman	35	Lower Granite Reservoir	09/11/2019	Cylindrospermopsin	<MDL	0.025	No	No		LOWEWHIT344_19_283
Whitman	35	Lower Granite Reservoir	09/11/2019	Microcystin	4.000	0.150	No	No		LOWEWHIT344_19_283
Whitman	35	Lower Granite Reservoir	09/11/2019	Saxitoxin	<MDL	0.020	No	No		LOWEWHIT344_19_283
Whitman	35	Lower Granite Reservoir	08/27/2019	Anatoxin-a	0.013	0.010	No	No		LOWEWHIT344_19_204
Whitman	35	Lower Granite Reservoir	08/27/2019	Cylindrospermopsin	<MDL	0.025	No	No		LOWEWHIT344_19_204
Whitman	35	Lower Granite Reservoir	08/27/2019	Microcystin	8.980	0.150	Yes	No		LOWEWHIT344_19_204
Whitman	35	Lower Granite Reservoir	08/27/2019	Saxitoxin	0.022	0.020	No	No		LOWEWHIT344_19_204

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As of 6/26/2018 the format of the toxin and phytoplankton export has changed. A unique identification number has been added to each site.

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