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
Yakima39Elton Pond10/03/2024Microcystin6.9000.150NoNoShoreELTOYAKI669_24_362
Yakima39Elton Pond09/26/2024Microcystin8.3000.150YesNoShoreELTOYAKI669_24_340
Yakima39Elton Pond09/19/2024Anatoxin-a<MDL0.010NoNo ELTOYAKI669_24-319
Yakima39Elton Pond09/19/2024Microcystin11.4000.150YesNo ELTOYAKI669_24-319
Yakima39Elton Pond09/11/2024Anatoxin-a<MDL0.010NoNoShoreELTOYAKI669_24_298
Yakima39Elton Pond09/11/2024Microcystin10.1000.150YesNoShoreELTOYAKI669_24_298
Yakima39Elton Pond09/03/2024Anatoxin-a<MDL0.010NoNo ELTOYAKI669_24_251
Yakima39Elton Pond09/03/2024Microcystin2.8000.150NoNo ELTOYAKI669_24_251
Yakima39Elton Pond08/13/2024Anatoxin-a<MDL0.010NoNo ELTOYAKI669_24_164
Yakima39Elton Pond08/13/2024Microcystin17.5000.150YesNo ELTOYAKI669_24_164
Yakima39Elton Pond08/08/2024Anatoxin-a<MDL0.010NoNoElton pondELTOYAKI669_24_142
Yakima39Elton Pond08/08/2024Microcystin4.5000.150NoNoElton pondELTOYAKI669_24_142
Yakima39Elton Pond07/29/2024Anatoxin-a<MDL0.010NoNo ELTOYAKI669_24_111
Yakima39Elton Pond07/29/2024Microcystin37.4000.300YesNo ELTOYAKI669_24_111
Yakima39Elton Pond07/23/2024Anatoxin-a<MDL0.010NoNo ELTOYAKI669_24_095
Yakima39Elton Pond07/23/2024Microcystin10.0000.300YesNo ELTOYAKI669_24_095
Yakima39Elton Pond07/23/2024Saxitoxin<MDL0.020NoNo ELTOYAKI669_24_095
Yakima39Elton Pond07/08/2024Anatoxin-a0.0250.010NoNo ELTOYAKI669_24_054
Yakima39Elton Pond07/08/2024Cylindrospermopsin<MDL0.025NoNo ELTOYAKI669_24_054
Yakima39Elton Pond07/08/2024Microcystin3.5300.300NoNo ELTOYAKI669_24_054
Yakima39Elton Pond07/08/2024Saxitoxin<MDL0.022NoNo ELTOYAKI669_24_054

Get data


Export data


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.

Links to external sites do not constitute endorsements by King County. By visiting this and other King County web pages, you expressly agree to be bound by terms and conditions of the site. For questions on the Freshwater Algae Program please contact . For questions on the content or functionality of the site please contact . For information or concerns about a current Algal Bloom please contact your local Health Department.

© 2012 King County