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
King8Cottage Lake09/25/2022Microcystin1.2000.150NoNowest side of lakeCOTTKING023_22_337
King8Cottage Lake09/19/2022Anatoxin-a<MDL0.165NoNo COTTKING023_DRONE
King8Cottage Lake09/19/2022Microcystin<MDL0.150NoNo COTTKING023_DRONE
King8Cottage Lake09/13/2022Anatoxin-a<MDL0.165NoNo COTTKING023_DRONE
King8Cottage Lake09/13/2022Microcystin<MDL0.150NoNo COTTKING023_DRONE
King8Cottage Lake09/06/2022Anatoxin-a<MDL0.165NoNo COTTKING023_DRONE
King8Cottage Lake09/06/2022Microcystin<MDL0.150NoNo COTTKING023_DRONE
King8Cottage Lake08/30/2022Anatoxin-a<MDL0.165NoNo COTTKING023_DRONE
King8Cottage Lake08/30/2022Microcystin<MDL0.150NoNo COTTKING023_DRONE
King8Cottage Lake08/23/2022Anatoxin-a<MDL0.165NoNo COTTKING023_DRONE
King8Cottage Lake08/23/2022Microcystin<MDL0.150NoNo COTTKING023_DRONE
King8Cottage Lake08/22/2022Anatoxin-a<MDL0.010NoNoEast shoreline COTTKING023_22_236
King8Cottage Lake08/22/2022Microcystin<MDL0.150NoNoEast shoreline COTTKING023_22_236
King8Cottage Lake08/17/2022Anatoxin-a<MDL0.010NoNo COTTKING023_22_218
King8Cottage Lake08/17/2022Cylindrospermopsin<MDL0.050NoNo COTTKING023_22_218
King8Cottage Lake08/16/2022Anatoxin-a<MDL0.165NoNo COTTKING023_DRONE
King8Cottage Lake08/16/2022Microcystin<MDL0.150NoNo COTTKING023_DRONE
King8Cottage Lake08/09/2022Anatoxin-a<MDL0.165NoNo COTTKING023_DRONE
King8Cottage Lake08/09/2022Microcystin<MDL0.150NoNo COTTKING023_DRONE
King8Cottage Lake08/02/2022Anatoxin-a<MDL0.165NoNo COTTKING023_DRONE
King8Cottage Lake08/02/2022Microcystin<MDL0.150NoNo COTTKING023_DRONE
King8Cottage Lake10/11/2021Microcystin0.1860.150NoViewResident shoreline COTTKING023_21_498
King8Cottage Lake09/13/2021Microcystin3.7400.150NoViewResident shoreline COTTKING023_21_368
King8Cottage Lake09/07/2021Microcystin4.4700.150NoViewCenter of lake (slightly NE)COTTKING023_21_327
King8Cottage Lake08/31/2021Microcystin<MDL0.150NoViewSW corner of lakeCOTTKING023_21_319
King8Cottage Lake08/23/2021Anatoxin-a<MDL0.010NoViewMiddle of lake COTTKING023_21_283
King8Cottage Lake08/23/2021Microcystin12.9000.150YesViewMiddle of lake COTTKING023_21_283
King8Cottage Lake08/09/2021Anatoxin-a<MDL0.010NoNoNE cornerCOTTKING023_21_216
King8Cottage Lake08/09/2021Microcystin3.4000.150NoNoNE cornerCOTTKING023_21_216
King8Cottage Lake07/12/2021Anatoxin-a<MDL0.010NoNoEast side of lakeCOTTKING023_21_119
King8Cottage Lake07/12/2021Microcystin1.4900.150NoNoEast side of lakeCOTTKING023_21_119
King8Cottage Lake12/20/2020Microcystin0.2060.150NoNo COTTKING023
King8Cottage Lake12/01/2020Microcystin0.4490.150NoView COTTKING023
King8Cottage Lake10/25/2020Microcystin124.0000.150YesNoSW end of lakeCOTTKING023_20_497
King8Cottage Lake10/18/2020Microcystin7.1700.150NoViewSW corner of lakeCOTTKING023_20_475
King8Cottage Lake10/11/2020Anatoxin-a<MDL0.010NoNoSW end of lakeCottKing023_20_469
King8Cottage Lake10/11/2020Microcystin49.0000.150YesNoSW end of lakeCottKing023_20_469
King8Cottage Lake10/04/2020Microcystin3.2300.150NoViewSW corner of lakeCOTTKING023_20_448
King8Cottage Lake09/27/2020Anatoxin-a<MDL0.010NoNoSW end of lakeCOTTKING023_20_420
King8Cottage Lake09/27/2020Microcystin39.5000.150YesNoSW end of lakeCOTTKING023_20_420
King8Cottage Lake08/07/2020Anatoxin-a<MDL0.010NoView COTTKING023_20_235
King8Cottage Lake08/07/2020Cylindrospermopsin<MDL0.025NoView COTTKING023_20_235
King8Cottage Lake08/07/2020Microcystin2.6300.150NoView COTTKING023_20_235
King8Cottage Lake08/07/2020Saxitoxin<MDL0.020NoView COTTKING023_20_235
King8Cottage Lake10/07/2019Microcystin3.1900.150NoNo COTTKING023_19_375
King8Cottage Lake09/22/2019Anatoxin-a<MDL0.010NoNo COTTKING023_19_318
King8Cottage Lake09/22/2019Microcystin1.0800.150NoNo COTTKING023_19_318
King8Cottage Lake08/18/2019Anatoxin-a<MDL0.010NoNo COTTKING023_19_172
King8Cottage Lake08/18/2019Anatoxin-a<MDL0.010NoNo COTTKING023_19_172
King8Cottage Lake08/18/2019Microcystin<MDL0.150NoNo COTTKING023_19_172
King8Cottage Lake08/18/2019Microcystin0.4460.150NoNo COTTKING023_19_172
King8Cottage Lake08/05/2019Anatoxin-a<MDL0.010NoView COTTKING023_19_117
King8Cottage Lake08/05/2019Microcystin0.2650.150NoView COTTKING023_19_117
King8Cottage Lake07/28/2019Anatoxin-a<MDL0.010NoView COTTKING023_19_105
King8Cottage Lake07/28/2019Microcystin0.3160.150NoView COTTKING023_19_105
King8Cottage Lake07/21/2019Anatoxin-a0.0110.010NoNo COTTKING023_19_096
King8Cottage Lake07/21/2019Microcystin7.1900.150NoNo COTTKING023_19_096
King8Cottage Lake11/28/2018Anatoxin-a<MDL0.010NoNo COTTKING023_18_NOV28
King8Cottage Lake11/28/2018Microcystin1.7600.150NoNo COTTKING023_18_NOV28
King8Cottage Lake10/23/2018Microcystin0.1510.150NoView COTTKING023_18_335
King8Cottage Lake10/07/2018Anatoxin-a<MDL0.010NoView COTTKING023_18_298
King8Cottage Lake10/07/2018Microcystin2.9100.150NoView COTTKING023_18_298
King8Cottage Lake09/30/2018Anatoxin-a<MDL0.010NoView COTTKING023_18_276
King8Cottage Lake09/30/2018Microcystin1.0000.150NoView COTTKING023_18_276
King8Cottage Lake09/24/2018Anatoxin-a<MDL0.010NoView COTTKING023_18_262
King8Cottage Lake09/24/2018Microcystin6.9300.150NoView COTTKING023_18_262
King8Cottage Lake09/19/2018Anatoxin-a<MDL0.010NoView COTTKING023_18_248
King8Cottage Lake09/19/2018Microcystin<MDL0.150NoView COTTKING023_18_248
King8Cottage Lake09/09/2018Anatoxin-a<MDL0.010NoView COTTKING023_18_223
King8Cottage Lake09/09/2018Microcystin0.2280.150NoView COTTKING023_18_223
King8Cottage Lake09/04/2018Anatoxin-a<MDL0.010NoView COTTKING023_18_211
King8Cottage Lake09/04/2018Microcystin0.6230.150NoView COTTKING023_18_211
King8Cottage Lake08/26/2018Anatoxin-a0.0170.010NoView COTTKING023_18_189
King8Cottage Lake08/26/2018Microcystin9.1700.150YesView COTTKING023_18_189
King8Cottage Lake08/20/2018Anatoxin-a<MDL0.010NoView COTTKING023_18_173
King8Cottage Lake08/20/2018Microcystin4.4000.150NoView COTTKING023_18_173
King8Cottage Lake08/06/2018Anatoxin-a<MDL0.010NoNo COTTKING023_18_141
King8Cottage Lake08/06/2018Cylindrospermopsin<MDL0.025NoNo COTTKING023_18_141
King8Cottage Lake08/06/2018Microcystin1.4800.150NoNo COTTKING023_18_141
King8Cottage Lake08/06/2018Saxitoxin<MDL0.020NoNo COTTKING023_18_141
King8Cottage Lake10/23/2017Anatoxin-a<MDL0.010NoNo COTTKING023_17_312
King8Cottage Lake10/23/2017Microcystin0.7530.150NoNo COTTKING023_17_312
King8Cottage Lake10/16/2017Anatoxin-a<MDL0.010NoNo COTTKING023_17_293
King8Cottage Lake10/16/2017Microcystin3.9700.150NoNo COTTKING023_17_293
King8Cottage Lake10/09/2017Anatoxin-a<MDL0.010NoNo COTTKING023_17_293
King8Cottage Lake10/09/2017Microcystin0.1680.150NoNo COTTKING023_17_293
King8Cottage Lake10/01/2017Anatoxin-a0.0250.010NoNo COTTKING023_17_265
King8Cottage Lake10/01/2017Microcystin<MDL0.150NoNo COTTKING023_17_265
King8Cottage Lake09/24/2017Anatoxin-a0.1310.010NoNo COTTKING023_17_258
King8Cottage Lake09/24/2017Microcystin6.0000.160NoNo COTTKING023_17_258
King8Cottage Lake05/07/2017Microcystin<MDL0.150NoNo COTTKING023_17_009
King8Cottage Lake10/23/2016Microcystin<MDL0.200NoNo COTTKING023_16_307
King8Cottage Lake10/09/2016Microcystin<MDL0.200NoNo COTTKING023_16_287
King8Cottage Lake10/03/2016Microcystin0.2200.160NoNo COTTKING023_16_267
King8Cottage Lake09/26/2016Anatoxin-a<MDL0.010NoNo COTTKING023_16_246
King8Cottage Lake09/26/2016Microcystin68.0000.160YesNo COTTKING023_16_246
King8Cottage Lake09/20/2016Microcystin16.0000.160YesView COTTKING023_16_221
King8Cottage Lake09/11/2016Anatoxin-a0.3690.010NoNo COTTKING023_16_207
King8Cottage Lake09/11/2016Microcystin11.3000.200YesNo COTTKING023_16_207
King8Cottage Lake07/10/2016Anatoxin-a<MDL0.010NoView COTTKING023_16_091
King8Cottage Lake07/10/2016Microcystin<MDL0.200NoView COTTKING023_16_091
King8Cottage Lake10/22/2015Microcystin1.5600.160NoNo cottking023_15_485
King8Cottage Lake10/13/2015Microcystin0.1600.160NoView COTTKING023_15_463
King8Cottage Lake10/05/2015Microcystin116.0000.160YesView COTTKING023_15_436
King8Cottage Lake09/30/2015Microcystin100.0000.160YesView COTTKING023_15_431
King8Cottage Lake09/21/2015Microcystin2.2800.160NoView COTTKING023_15_399
King8Cottage Lake09/13/2015Anatoxin-a<MDL0.010NoNo  
King8Cottage Lake09/13/2015Microcystin19.6000.160YesNo  
King8Cottage Lake10/22/2012Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake10/22/2012Microcystin0.0930.050NoNo COTTKING023
King8Cottage Lake10/22/2012Microcystin0.0670.050NoNo COTTKING023
King8Cottage Lake10/07/2012Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake10/07/2012Microcystin0.0800.050NoNo COTTKING023
King8Cottage Lake09/24/2012Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake09/24/2012Microcystin0.1930.050NoNo COTTKING023
King8Cottage Lake09/24/2012Microcystin1.7400.050NoNo COTTKING023
King8Cottage Lake09/10/2012Anatoxin-a<MDL0.019NoNo  
King8Cottage Lake09/10/2012Microcystin1.7900.050NoNo  
King8Cottage Lake09/08/2012Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake09/08/2012Microcystin0.0990.050NoNo COTTKING023
King8Cottage Lake08/20/2012Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake08/20/2012Microcystin0.0620.050NoNo COTTKING023
King8Cottage Lake08/05/2012Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake08/05/2012Microcystin0.0600.050NoNo COTTKING023
King8Cottage Lake07/22/2012Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake07/22/2012Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake07/08/2012Anatoxin-a0.0390.019NoNo COTTKING023
King8Cottage Lake07/08/2012Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake06/17/2012Anatoxin-a0.1200.019NoNo COTTKING023
King8Cottage Lake06/17/2012Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake06/04/2012Anatoxin-a0.0430.019NoNo COTTKING023
King8Cottage Lake06/04/2012Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake10/24/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake10/24/2011Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake10/09/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake10/09/2011Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake09/25/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake09/25/2011Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake09/12/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake09/12/2011Microcystin0.1080.050NoNo COTTKING023
King8Cottage Lake08/21/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake08/21/2011Microcystin0.2710.050NoNo COTTKING023
King8Cottage Lake08/07/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake08/07/2011Microcystin0.1680.050NoNo COTTKING023
King8Cottage Lake07/25/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake07/25/2011Microcystin0.0510.050NoNo COTTKING023
King8Cottage Lake07/10/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake07/10/2011Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake06/20/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake06/20/2011Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake06/05/2011Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake06/05/2011Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake10/24/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake10/24/2010Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake10/10/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake10/10/2010Microcystin0.0670.050NoNo COTTKING023
King8Cottage Lake09/26/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake09/26/2010Microcystin0.0980.050NoNo COTTKING023
King8Cottage Lake09/13/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake09/13/2010Microcystin0.1160.050NoNo COTTKING023
King8Cottage Lake08/22/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake08/22/2010Microcystin0.1560.050NoNo COTTKING023
King8Cottage Lake08/18/2010Anatoxin-a0.0450.019NoView  
King8Cottage Lake08/18/2010Cylindrospermopsin<MDL0.100NoView  
King8Cottage Lake08/18/2010Microcystin0.2380.050NoView  
King8Cottage Lake08/18/2010Saxitoxin<MDL0.020NoView  
King8Cottage Lake08/09/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake08/09/2010Microcystin0.0920.050NoNo COTTKING023
King8Cottage Lake07/26/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake07/26/2010Microcystin0.1630.050NoNo COTTKING023
King8Cottage Lake07/11/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake07/11/2010Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake06/20/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake06/20/2010Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake06/06/2010Anatoxin-a<MDL0.019NoNo COTTKING023
King8Cottage Lake06/06/2010Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake10/19/2009Anatoxin-a<MDL0.012NoNo COTTKING023
King8Cottage Lake10/19/2009Microcystin0.0800.050NoNo COTTKING023
King8Cottage Lake10/07/2009Anatoxin-a<MDL0.190NoNo COTTKING023
King8Cottage Lake10/07/2009Microcystin4.1900.050NoNo COTTKING023
King8Cottage Lake10/05/2009Anatoxin-a<MDL0.012NoNo COTTKING023
King8Cottage Lake10/05/2009Microcystin0.1640.050NoNo COTTKING023
King8Cottage Lake09/21/2009Anatoxin-a<MDL0.012NoNo COTTKING023
King8Cottage Lake09/21/2009Microcystin0.1140.050NoNo COTTKING023
King8Cottage Lake09/09/2009Anatoxin-a<MDL0.005NoNo COTTKING023
King8Cottage Lake09/09/2009Microcystin0.1990.050NoNo COTTKING023
King8Cottage Lake08/24/2009Anatoxin-a<MDL0.006NoNo COTTKING023
King8Cottage Lake08/24/2009Microcystin0.1930.050NoNo COTTKING023
King8Cottage Lake08/10/2009Anatoxin-a<MDL0.006NoNo COTTKING023
King8Cottage Lake08/10/2009Microcystin0.6010.050NoNo COTTKING023
King8Cottage Lake07/27/2009Anatoxin-a<MDL0.004NoNo COTTKING023
King8Cottage Lake07/27/2009Microcystin0.4800.050NoNo COTTKING023
King8Cottage Lake07/13/2009Anatoxin-a<MDL0.006NoNo COTTKING023
King8Cottage Lake07/13/2009Microcystin0.4520.050NoNo COTTKING023
King8Cottage Lake06/29/2009Anatoxin-a<MDL0.006NoNo COTTKING023
King8Cottage Lake06/29/2009Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake06/15/2009Anatoxin-a<MDL0.003NoNo COTTKING023
King8Cottage Lake06/15/2009Microcystin<MDL0.050NoNo COTTKING023
King8Cottage Lake10/13/2008Microcystin0.5710.050NoNo  
King8Cottage Lake08/13/2008Microcystin1.8300.050NoNo  
King8Cottage Lake07/25/2008Microcystin0.0830.050NoNo  
King8Cottage Lake11/08/2007Microcystin0.5520.050NoNo  
King8Cottage Lake09/26/2007Microcystin0.3490.050NoNo  
King8Cottage Lake09/20/2007Microcystin2.6100.050NoNo  
King8Cottage Lake08/01/2007Microcystin0.1130.050NoNo  

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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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