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 Lizbeth Seebacher 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.

CountyWRIA NumberSiteCollect DateParameterToxin Conc. (µg/L)MDL (µg/L)Above State GuidelineAdditional InformationSample LocationEcology Tracking Number
Stevens59Keogh Lake11/08/2023Microcystin527.0000.150YesNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_444
Stevens59Keogh Lake10/17/2023Microcystin19.5000.150YesViewHwy 20 E Colville, WA 99114KEOGSTEV639_23_381
Stevens59Keogh Lake10/03/2023Microcystin10.0000.150YesNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_339
Stevens59Keogh Lake09/19/2023Microcystin10.0000.150YesNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_301
Stevens59Keogh Lake09/05/2023Microcystin10.0000.150YesNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_242
Stevens59Keogh Lake09/05/2023Microcystin0.2130.150NoNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_245
Stevens59Keogh Lake08/22/2023Anatoxin-a<MDL0.010NoNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_217
Stevens59Keogh Lake08/22/2023Cylindrospermopsin<MDL0.025NoNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_217
Stevens59Keogh Lake08/22/2023Microcystin10.0000.150YesNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_217
Stevens59Keogh Lake08/22/2023Saxitoxin<MDL0.020NoNoHwy 20 E Colville, WA 99114KEOGSTEV639_23_217
Stevens59Keogh Lake05/30/2023Anatoxin-a<MDL0.010NoViewHwy 20 E Colville, WA 99114KEOGSTEV639_23_032
Stevens59Keogh Lake05/30/2023Microcystin3.5700.150NoViewHwy 20 E Colville, WA 99114KEOGSTEV639_23_032
Stevens59Keogh Lake05/16/2023Anatoxin-a<MDL0.010NoViewLake-WideKEOGSTEV639_23_022
Stevens59Keogh Lake05/16/2023Anatoxin-a<MDL0.010NoViewLake-WideKEOGSTEV639_23_023
Stevens59Keogh Lake05/16/2023Cylindrospermopsin<MDL0.025NoViewLake-WideKEOGSTEV639_23_023
Stevens59Keogh Lake05/16/2023Cylindrospermopsin<MDL0.025NoViewLake-WideKEOGSTEV639_23_022
Stevens59Keogh Lake05/16/2023Microcystin1.7200.150NoViewLake-WideKEOGSTEV639_23_022
Stevens59Keogh Lake05/16/2023Microcystin0.6660.150NoViewLake-WideKEOGSTEV639_23_023
Stevens59Keogh Lake05/16/2023Saxitoxin<MDL0.020NoViewLake-WideKEOGSTEV639_23_023
Stevens59Keogh Lake05/16/2023Saxitoxin<MDL0.020NoViewLake-WideKEOGSTEV639_23_022
Stevens59Keogh Lake04/24/2023Anatoxin-a<MDL0.165NoViewHwy 20 E Colville, WA 99114KEOGSTEV639_23_007
Stevens59Keogh Lake04/24/2023Microcystin201.0000.150YesViewHwy 20 E Colville, WA 99114KEOGSTEV639_23_007
Stevens59Keogh Lake04/17/2023Anatoxin-a<MDL0.165NoView KEOGStev639_23_019
Stevens59Keogh Lake04/17/2023Microcystin301.0000.150YesView KEOGStev639_23_019
Stevens59Keogh Lake04/06/2023Anatoxin-a<MDL0.010NoView KEOGStev639_23_004
Stevens59Keogh Lake04/06/2023Anatoxin-a<MDL0.010NoNo KEOGStev639_23_002
Stevens59Keogh Lake04/06/2023Anatoxin-a<MDL0.010NoView KEOGStev639_23_003
Stevens59Keogh Lake04/06/2023Cylindrospermopsin<MDL0.025NoView KEOGStev639_23_003
Stevens59Keogh Lake04/06/2023Cylindrospermopsin<MDL0.025NoNo KEOGStev639_23_002
Stevens59Keogh Lake04/06/2023Cylindrospermopsin<MDL0.025NoView KEOGStev639_23_004
Stevens59Keogh Lake04/06/2023Microcystin<MDL0.150NoView KEOGStev639_23_004
Stevens59Keogh Lake04/06/2023Microcystin1.8400.150NoNo KEOGStev639_23_002
Stevens59Keogh Lake04/06/2023Microcystin5.8600.150NoView KEOGStev639_23_003
Stevens59Keogh Lake04/06/2023Saxitoxin<MDL0.020NoView KEOGStev639_23_003
Stevens59Keogh Lake04/06/2023Saxitoxin<MDL0.020NoNo KEOGStev639_23_002
Stevens59Keogh Lake04/06/2023Saxitoxin<MDL0.020NoView KEOGStev639_23_004

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