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.

Toxin:
CountyWRIA NumberSiteCollect DateParameterToxin Conc. (µg/L)MDL (µg/L)Above State GuidelineAdditional InformationSample LocationEcology Tracking Number
Walla Walla32McNary Slough09/28/2022Anatoxin-a 0.010NoNoSough #3 East side of Lake RdMCNAWALL334_22_349
Walla Walla32McNary Slough09/28/2022Anatoxin-a<MDL0.010NoNoMcNary Hunting Slough #2MCNAWALL334_22_351
Walla Walla32McNary Slough09/28/2022Anatoxin-a 0.010NoNoMcNary Slough #4MCNAWALL334_22_350
Walla Walla32McNary Slough09/28/2022Microcystin23.4000.150YesNoMcNary Slough #4MCNAWALL334_22_350
Walla Walla32McNary Slough09/28/2022Microcystin2.3000.150NoNoMcNary Hunting Slough #2MCNAWALL334_22_351
Walla Walla32McNary Slough09/28/2022Microcystin2.4000.150NoNoSough #3 East side of Lake RdMCNAWALL334_22_349
Walla Walla32McNary Slough09/19/2022Anatoxin-a0.8750.010NoNoMcNary Slough #3MCNAWALL334_22_321
Walla Walla32McNary Slough09/19/2022Anatoxin-a0.6150.010NoNoMcNary Slough #4MCNAWALL334_22_320
Walla Walla32McNary Slough09/19/2022Microcystin13.1000.150YesNoMcNary Slough #4MCNAWALL334_22_320
Walla Walla32McNary Slough09/19/2022Microcystin17.5000.150YesNoMcNary Slough #3MCNAWALL334_22_321
Walla Walla32McNary Slough09/01/2022Anatoxin-a0.1470.010NoNoMcNary Slough #4MCNAWALL334_22_278
Walla Walla32McNary Slough09/01/2022Anatoxin-a<MDL0.010NoNoMcNary Headquarters Unit Lot E #8MCNAWALL334_22_276
Walla Walla32McNary Slough09/01/2022Anatoxin-a2.8200.010YesNoMcNary Slough #3MCNAWALL334_22_277
Walla Walla32McNary Slough09/01/2022Microcystin9.3000.150YesNoMcNary Slough #3MCNAWALL334_22_277
Walla Walla32McNary Slough09/01/2022Microcystin0.1520.150NoNoMcNary Headquarters Unit Lot E #8MCNAWALL334_22_276
Walla Walla32McNary Slough09/01/2022Microcystin38.0000.150YesNoMcNary Slough #4MCNAWALL334_22_278
Walla Walla32McNary Slough08/26/2022Anatoxin-a0.0120.010NoNoHood Park West boat launch McNary WLRMCNAWALL334_22_259
Walla Walla32McNary Slough08/26/2022Microcystin<MDL0.150NoNoHood Park West boat launch McNary WLRMCNAWALL334_22_259
Walla Walla32McNary Slough08/24/2022Anatoxin-a1.6300.010YesNoSlough #3, North of Humorist RdMCNAWALL334_22_255
Walla Walla32McNary Slough08/24/2022Anatoxin-a0.1560.010NoNoSlough #4, Wes side of Lake Rd BridgeMCNAWALL334_22_254
Walla Walla32McNary Slough08/24/2022Microcystin49.0000.150YesNoSlough #4, Wes side of Lake Rd BridgeMCNAWALL334_22_254
Walla Walla32McNary Slough08/24/2022Microcystin10.0000.150YesNoSlough #3, North of Humorist RdMCNAWALL334_22_255
Walla Walla32McNary Slough08/16/2022Anatoxin-a0.4800.010NoNoEast side of Lake Rd BridgeMCNAWALL334_22_211
Walla Walla32McNary Slough08/16/2022Cylindrospermopsin<MDL0.050NoNoEast side of Lake Rd BridgeMCNAWALL334_22_211
Walla Walla32McNary Slough08/16/2022Microcystin27.0000.150YesNoEast side of Lake Rd BridgeMCNAWALL334_22_211
Walla Walla32McNary Slough08/08/2022Anatoxin-a0.1240.010NoNoSlough #4MCNAWALL334_22_170
Walla Walla32McNary Slough08/08/2022Anatoxin-a0.4620.010NoNoSlough #3MCNAWALL334_22_172
Walla Walla32McNary Slough08/08/2022Microcystin16.8000.150YesNoSlough #3MCNAWALL334_22_172
Walla Walla32McNary Slough08/08/2022Microcystin31.4000.150YesNoSlough #4MCNAWALL334_22_170
Walla Walla32McNary Slough09/09/2019Anatoxin-a0.3360.010NoNo MCNAWALL334_19_268
Walla Walla32McNary Slough09/09/2019Anatoxin-a0.1910.010NoNo MCNAWALL334_19_269
Walla Walla32McNary Slough09/09/2019Microcystin8.4100.150YesNo MCNAWALL334_19_269
Walla Walla32McNary Slough09/09/2019Microcystin4.2000.150NoNo MCNAWALL334_19_268
Walla Walla32McNary Slough06/18/2019Anatoxin-a<MDL0.010NoNo SLOUWALL334_19_049
Walla Walla32McNary Slough06/18/2019Cylindrospermopsin<MDL0.025NoNo SLOUWALL334_19_049
Walla Walla32McNary Slough06/18/2019Microcystin0.2430.150NoNo SLOUWALL334_19_049
Walla Walla32McNary Slough06/18/2019Saxitoxin0.0330.020NoNo SLOUWALL334_19_049

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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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