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
Grant41Cascade Park (Moses Lake)10/23/2023Microcystin0.3720.150NoViewCascade Valley Park boat launchCASCGRAN104_23_408
Grant41Cascade Park (Moses Lake)10/16/2023Microcystin5.8300.150NoViewCascade Valley Park boat launchCASCGRAN104_23_378
Grant41Cascade Park (Moses Lake)10/03/2023Microcystin10.0000.150YesNoCascade Valley Park boat launchCASCGRAN104_23_344
Grant41Cascade Park (Moses Lake)09/11/2023Microcystin10.0000.300YesNoCascade Valley Park boat launchCASCGRAN104_23_276
Grant41Cascade Park (Moses Lake)09/19/2022Microcystin13.3000.150YesViewCascade Valley campground coveCASCGRAN104_22_323
Grant41Cascade Park (Moses Lake)07/13/2022Anatoxin-a<MDL0.010NoViewBoat launchCASCGRAN104_22_094
Grant41Cascade Park (Moses Lake)07/13/2022Microcystin<MDL0.150NoViewBoat launchCASCGRAN104_22_094
Grant41Cascade Park (Moses Lake)10/05/2020Microcystin0.5770.150NoViewCascade Valley Park Boat LaunchCASCGRAN104_20_452
Grant41Cascade Park (Moses Lake)08/31/2020Microcystin0.6050.150NoNoBoat LaunchCASCGRAN104_20_325
Grant41Cascade Park (Moses Lake)08/03/2020Microcystin2.8200.150NoViewCascade Valley Park Boat LaunchCASCGRAN104_20_209
Grant41Cascade Park (Moses Lake)07/20/2020Microcystin9.1700.150YesNoCascade Valley Park swim areaCASCGRAN104_20_145
Grant41Cascade Park (Moses Lake)07/06/2020Microcystin0.6120.150NoNoCascade Valley Park Boat LaunchCASCGRAN104_20_113
Grant41Cascade Park (Moses Lake)06/29/2020Microcystin0.6920.150NoNoCascade Valley Park Boat LaunchCASCGRAN104_20_109
Grant41Cascade Park (Moses Lake)11/04/2019Microcystin0.4810.150NoNo CASCGRAN104_19_442
Grant41Cascade Park (Moses Lake)10/28/2019Microcystin0.3630.150NoNo CASCGRAN104_19_427
Grant41Cascade Park (Moses Lake)10/21/2019Microcystin1.3300.150NoView CASCGRAN104_19_411
Grant41Cascade Park (Moses Lake)10/14/2019Microcystin35.4000.150YesNo CASCGRAN104_19_393
Grant41Cascade Park (Moses Lake)10/07/2019Microcystin8.4000.150YesNo CASCGRAN104_19_369
Grant41Cascade Park (Moses Lake)09/23/2019Microcystin660.0000.150YesNo CASCGRAN104_19_324
Grant41Cascade Park (Moses Lake)09/16/2019Microcystin17.3000.150YesNo CASCGRAN104_19_301
Grant41Cascade Park (Moses Lake)09/08/2019Microcystin5.0900.150NoNo CASCGRAN104_19_266
Grant41Cascade Park (Moses Lake)09/03/2019Microcystin4.5400.150NoNo CASCGRAN104_19_218
Grant41Cascade Park (Moses Lake)07/15/2019Anatoxin-a<MDL0.010NoView CASCGRAN104_19_084
Grant41Cascade Park (Moses Lake)07/15/2019Microcystin5.4800.150NoView CASCGRAN104_19_084
Grant41Cascade Park (Moses Lake)09/26/2018Microcystin305.0000.150YesNo MOSEGRAN104_18_268
Grant41Cascade Park (Moses Lake)10/10/2011Microcystin0.7900.050NoNo  

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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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