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:
CountyWRIA NumberSiteCollect DateParameterToxin Conc. (µg/L)MDL (µg/L)Above State GuidelineAdditional InformationSample LocationEcology Tracking Number
Grays Harbor22Duck Lake11/19/2024Anatoxin-a<MDL0.010NoNoChinook Park DUCKGRAY085_24_474
Grays Harbor22Duck Lake11/19/2024Microcystin<MDL0.150NoNoChinook Park DUCKGRAY085_24_474
Grays Harbor22Duck Lake10/24/2024Microcystin<MDL0.150NoNoduckDuckGray085_24_436
Grays Harbor22Duck Lake08/19/2024Microcystin4.6900.300NoViewMarine View Boat LaunchDUCKGRAY085_24_193
Grays Harbor22Duck Lake07/23/2024Anatoxin-a<MDL0.010NoNo104 Marine View Dr. SEDUCKGRAY085_24_094
Grays Harbor22Duck Lake07/23/2024Cylindrospermopsin<MDL0.025NoNo104 Marine View Dr. SEDUCKGRAY085_24_094
Grays Harbor22Duck Lake07/23/2024Microcystin500.0000.300YesNo104 Marine View Dr. SEDUCKGRAY085_24_094
Grays Harbor22Duck Lake07/23/2024Saxitoxin<MDL0.022NoNo104 Marine View Dr. SEDUCKGRAY085_24_094
Grays Harbor22Duck Lake07/12/2021Anatoxin-a<MDL0.010NoView1001 Wawona Ave SEDUCKGRAY085_21_114
Grays Harbor22Duck Lake07/12/2021Cylindrospermopsin<MDL0.025NoView1001 Wawona Ave SEDUCKGRAY085_21_114
Grays Harbor22Duck Lake07/12/2021Microcystin5.1900.150NoView1001 Wawona Ave SEDUCKGRAY085_21_114
Grays Harbor22Duck Lake07/12/2021Saxitoxin<MDL0.020NoView1001 Wawona Ave SEDUCKGRAY085_21_114
Grays Harbor22Duck Lake10/08/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_381
Grays Harbor22Duck Lake10/08/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_382
Grays Harbor22Duck Lake10/08/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_378
Grays Harbor22Duck Lake10/08/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_380
Grays Harbor22Duck Lake10/08/2019Microcystin1.2100.150NoNo DUCKGRAY085_19_380
Grays Harbor22Duck Lake10/08/2019Microcystin0.2000.150NoNo DUCKGRAY085_19_378
Grays Harbor22Duck Lake10/08/2019Microcystin0.2510.150NoNo DUCKGRAY085_19_382
Grays Harbor22Duck Lake10/08/2019Microcystin<MDL0.150NoNo DUCKGRAY085_19_381
Grays Harbor22Duck Lake09/30/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_351
Grays Harbor22Duck Lake09/30/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_352
Grays Harbor22Duck Lake09/30/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_349
Grays Harbor22Duck Lake09/30/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_350
Grays Harbor22Duck Lake09/30/2019Microcystin32.0000.150YesNo DUCKGRAY085_19_350
Grays Harbor22Duck Lake09/30/2019Microcystin17.4000.150YesNo DUCKGRAY085_19_349
Grays Harbor22Duck Lake09/30/2019Microcystin0.5740.150NoNo DUCKGRAY085_19_352
Grays Harbor22Duck Lake09/30/2019Microcystin2.8800.150NoNo DUCKGRAY085_19_351
Grays Harbor22Duck Lake09/10/2019Anatoxin-a<MDL0.010NoNo DUCKGRAY085_19_276
Grays Harbor22Duck Lake09/10/2019Cylindrospermopsin<MDL0.025NoNo DUCKGRAY085_19_276
Grays Harbor22Duck Lake09/10/2019Microcystin23.4000.150YesNo DUCKGRAY085_19_276
Grays Harbor22Duck Lake09/10/2019Saxitoxin<MDL0.020NoNo DUCKGRAY085_19_276
Grays Harbor22Duck Lake10/12/2012Anatoxin-a0.0560.019NoNo  
Grays Harbor22Duck Lake10/12/2012Microcystin97.3000.160YesNo  
Grays Harbor22Duck Lake09/14/2011Anatoxin-a<MDL0.019NoView  
Grays Harbor22Duck Lake09/14/2011Microcystin124.0000.050YesView  
Grays Harbor22Duck Lake12/16/2009Anatoxin-a<MDL0.038NoNo  
Grays Harbor22Duck Lake12/16/2009Microcystin<MDL0.050NoNo  
Grays Harbor22Duck Lake10/29/2009Microcystin0.3330.050NoNo  
Grays Harbor22Duck Lake10/06/2009Microcystin2.1000.050NoNo  
Grays Harbor22Duck Lake09/21/2009Microcystin0.7870.050NoNo  
Grays Harbor22Duck Lake09/10/2009Microcystin0.7020.050NoNo  
Grays Harbor22Duck Lake09/03/2009Microcystin1.4200.050NoNo  
Grays Harbor22Duck Lake08/27/2009Microcystin1.4500.050NoNo  
Grays Harbor22Duck Lake08/20/2009Microcystin0.6890.050NoNo  
Grays Harbor22Duck Lake08/12/2009Microcystin0.5310.050NoNo  
Grays Harbor22Duck Lake08/06/2009Anatoxin-a0.1400.075NoNo  
Grays Harbor22Duck Lake08/06/2009Microcystin32.4000.050YesNo  

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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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