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
Skagit3Pass Lake10/20/2021Anatoxin-a0.3780.010NoNoBoat RampPASSSKAG174_21_535
Skagit3Pass Lake10/20/2021Microcystin24.0000.150YesNoBoat RampPASSSKAG174_21_535
Skagit3Pass Lake10/11/2021Anatoxin-a0.9790.010NoNoBoat RampPASSSKAG174_21_493
Skagit3Pass Lake10/11/2021Microcystin42.0000.150YesNoBoat RampPASSSKAG174_21_493
Skagit3Pass Lake09/20/2021Anatoxin-a26085.0000.010YesViewBoat RampPASSSKAG174_21_409
Skagit3Pass Lake09/20/2021Microcystin782.0000.150YesViewBoat RampPASSSKAG174_21_409
Skagit3Pass Lake09/07/2021Anatoxin-a692.0000.010YesViewBoat RampPASSSKAG174_21_338
Skagit3Pass Lake09/07/2021Microcystin44.2000.150YesViewBoat RampPASSSKAG174_21_338
Skagit3Pass Lake08/24/2021Anatoxin-a13200.0000.010YesViewBoat RampPASSSKAG174_21_289
Skagit3Pass Lake08/24/2021Microcystin0.4190.150NoViewBoat RampPASSSKAG174_21_289
Skagit3Pass Lake08/12/2021Anatoxin-a2580.0000.010YesViewBoat RampPASSSKAG174_21_233
Skagit3Pass Lake08/12/2021Cylindrospermopsin<MDL0.025NoViewBoat RampPASSSKAG174_21_233
Skagit3Pass Lake08/12/2021Microcystin<MDL0.150NoViewBoat RampPASSSKAG174_21_233
Skagit3Pass Lake08/12/2021Saxitoxin<MDL0.020NoViewBoat RampPASSSKAG174_21_233
Skagit3Pass Lake09/28/2020Anatoxin-a16.2000.010YesView PASSSKAG174_20_415
Skagit3Pass Lake09/28/2020Microcystin1110.0000.150YesView PASSSKAG174_20_415
Skagit3Pass Lake08/17/2020Anatoxin-a413.0000.010YesViewEntire LakePASSSKAG174_20_257
Skagit3Pass Lake08/17/2020Microcystin96.8000.150YesViewEntire LakePASSSKAG174_20_257
Skagit3Pass Lake07/20/2020Anatoxin-a0.1380.010NoNo PASSSKAG174_20_155
Skagit3Pass Lake07/20/2020Microcystin<MDL0.150NoNo PASSSKAG174_20_155
Skagit3Pass Lake07/07/2020Anatoxin-a0.0250.010NoNo PASSSKAG174_20-122
Skagit3Pass Lake07/07/2020Microcystin0.7680.150NoNo PASSSKAG174_20-122
Skagit3Pass Lake06/22/2020Anatoxin-a0.0150.010NoView PASSSKAG174_20_092
Skagit3Pass Lake06/22/2020Microcystin<MDL0.150NoView PASSSKAG174_20_092
Skagit3Pass Lake06/10/2020Anatoxin-a<MDL0.010NoView PASSSKAG174_20_078
Skagit3Pass Lake06/10/2020Cylindrospermopsin<MDL0.025NoView PASSSKAG174_20_078
Skagit3Pass Lake06/10/2020Microcystin11.0000.150YesView PASSSKAG174_20_078
Skagit3Pass Lake06/10/2020Saxitoxin<MDL0.020NoView PASSSKAG174_20_078
Skagit3Pass Lake11/06/2019Anatoxin-a0.0130.010NoNo PASSSKAG174_19_214
Skagit3Pass Lake11/06/2019Microcystin31.7000.150YesNo PASSSKAG174_19_214
Skagit3Pass Lake10/10/2019Anatoxin-a15.5000.010YesNo PASSSKAG174_19_390
Skagit3Pass Lake10/10/2019Microcystin69.9000.150YesNo PASSSKAG174_19_390
Skagit3Pass Lake09/23/2019Anatoxin-a155.0000.010YesView PASSSKAG174_19_214
Skagit3Pass Lake09/23/2019Microcystin2010.0000.150YesView PASSSKAG174_19_214
Skagit3Pass Lake09/11/2019Anatoxin-a444.0000.010YesNo PASSSKAG174_19_214
Skagit3Pass Lake09/11/2019Microcystin7150.0000.150YesNo PASSSKAG174_19_214
Skagit3Pass Lake09/03/2019Anatoxin-a0.3960.010NoNo PASSSKAG174_19_214
Skagit3Pass Lake09/03/2019Microcystin<MDL0.150NoNo PASSSKAG174_19_214
Skagit3Pass Lake10/17/2018Anatoxin-a0.0180.010NoView PASSSKAG174_18_205
Skagit3Pass Lake09/18/2018Anatoxin-a0.0580.010NoNo PASSSKAG174_28_205
Skagit3Pass Lake09/18/2018Microcystin207.0000.150YesNo PASSSKAG174_28_205
Skagit3Pass Lake11/01/2017Anatoxin-a0.3370.010NoNo PASSSKAG174_17_337
Skagit3Pass Lake11/01/2017Microcystin<MDL0.150NoNo PASSSKAG174_17_337
Skagit3Pass Lake10/19/2017Anatoxin-a0.5750.010NoNo PASSSKAG174_17_311
Skagit3Pass Lake10/19/2017Microcystin<MDL0.150NoNo PASSSKAG174_17_311
Skagit3Pass Lake10/11/2017Anatoxin-a246.0000.010YesNo PASSSKAG174_17_295
Skagit3Pass Lake10/11/2017Microcystin10.1000.150YesNo PASSSKAG174_17_295
Skagit3Pass Lake10/03/2017Anatoxin-a1360.0000.010YesView PASSSKAG174_17_277
Skagit3Pass Lake10/03/2017Microcystin16.9000.150YesView PASSSKAG174_17_277
Skagit3Pass Lake10/19/2016Anatoxin-a<MDL0.010NoNo PASSSKAG174_16_301
Skagit3Pass Lake10/19/2016Microcystin0.9070.200NoNo PASSSKAG174_16_301
Skagit3Pass Lake09/22/2016Anatoxin-a0.0180.010NoView PASSSKAG174_16_230
Skagit3Pass Lake09/22/2016Microcystin110.0000.160YesView PASSSKAG174_16_230
Skagit3Pass Lake09/08/2016Anatoxin-a<MDL0.010NoNo PASSSKAG174_16_203
Skagit3Pass Lake09/08/2016Microcystin4.7100.200NoNo PASSSKAG174_16_203
Skagit3Pass Lake02/02/2016Anatoxin-a<MDL0.010NoView PASSSKAG174_16_010
Skagit3Pass Lake02/02/2016Microcystin2.70.160NoView PASSSKAG174_16_010
Skagit3Pass Lake01/25/2016Microcystin0.3580.160NoView PASSSKAG174_16_006
Skagit3Pass Lake11/09/2015Microcystin487.0000.160YesNo PASSSKAG174_15_513
Skagit3Pass Lake11/02/2015Microcystin149.0000.160YesNo PASSSKAG174_15_502
Skagit3Pass Lake10/26/2015Anatoxin-a<MDL0.010NoView PASSSKAG174_15_492
Skagit3Pass Lake10/26/2015Microcystin1.6400.160NoView PASSSKAG174_15_492
Skagit3Pass Lake10/19/2015Anatoxin-a0.0490.010NoView passskag174_15_471
Skagit3Pass Lake10/19/2015Microcystin1030.0000.160YesView passskag174_15_471
Skagit3Pass Lake10/05/2015Anatoxin-a0.0140.010NoView PASSSKAG174_15_438
Skagit3Pass Lake10/05/2015Microcystin1.7300.160NoView PASSSKAG174_15_438
Skagit3Pass Lake09/28/2015Anatoxin-a<MDL0.010NoNo PASSSKAG174_15_421
Skagit3Pass Lake09/28/2015Microcystin0.7780.160NoNo PASSSKAG174_15_421
Skagit3Pass Lake09/21/2015Anatoxin-a0.8230.010NoView PASSSKAG174_15_402
Skagit3Pass Lake09/21/2015Microcystin117.0000.160YesView PASSSKAG174_15_402
Skagit3Pass Lake09/14/2015Microcystin13.2000.160YesView PASSSKAG174_15_382
Skagit3Pass Lake09/08/2015Anatoxin-a0.1190.010NoView PASSSKAG174_15_361
Skagit3Pass Lake09/08/2015Microcystin7.3300.160NoView PASSSKAG174_15_361
Skagit3Pass Lake08/31/2015Anatoxin-a<MDL0.010NoView PASSSKAG174_15_343
Skagit3Pass Lake08/31/2015Microcystin0.7220.160NoView PASSSKAG174_15_343
Skagit3Pass Lake02/17/2015anatoxin-a0.0100.010NoNo Passskag15-037
Skagit3Pass Lake02/17/2015microcystin0.7000.160NoNo Passskag15-037
Skagit3Pass Lake02/04/2015Anatoxin-a0.0200.010NoView PASSSKAG15_030
Skagit3Pass Lake02/04/2015Microcystin1.7000.160NoView PASSSKAG15_030
Skagit3Pass Lake01/28/2015Anatoxin-a<MDL0.010NoNo PASSSKAG15_027
Skagit3Pass Lake01/20/2015Anatoxin-a0.2900.010NoNo PASSSKAG15_018
Skagit3Pass Lake01/20/2015Microcystin6.0000.160NoNo PASSSKAG15_018
Skagit3Pass Lake01/06/2015Anatoxin-a0.1300.010NoView PASSSKAG15_003
Skagit3Pass Lake01/06/2015Microcystin0.5190.160NoView PASSSKAG15_003
Skagit3Pass Lake12/15/2014Anatoxin-a0.0840.010NoNo PASSSKAG14_354
Skagit3Pass Lake12/15/2014Microcystin0.9570.160NoNo PASSSKAG14_354
Skagit3Pass Lake12/02/2014Anatoxin-a0.2990.010NoNo PASSSKAG14_346
Skagit3Pass Lake12/02/2014Microcystin1.7800.160NoNo PASSSKAG14_346
Skagit3Pass Lake11/18/2014Anatoxin-a0.4630.010NoNo PASSSKAG14_332
Skagit3Pass Lake11/18/2014Microcystin32.4000.160YesNo PASSSKAG14_332
Skagit3Pass Lake10/18/2012Anatoxin-a1.5600.019YesView  
Skagit3Pass Lake10/18/2012Microcystin<MDL0.050NoView  

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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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