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
Thurston13Lake Lawrence09/23/2021Microcystin0.2000.150NoNoCommunity Park / Whole LakeLAWRTHUR061_21_426
Thurston13Lake Lawrence09/13/2021Microcystin12.0000.150YesNoCommunity ParkLAWRTHUR061_21_374
Thurston13Lake Lawrence08/24/2021Microcystin2.8200.150NoNoCommunity ParkLAWRTHUR061_21_295
Thurston13Lake Lawrence08/16/2021Microcystin0.2080.150NoNoCommunity ParkLAWRTHUR061_21_237
Thurston13Lake Lawrence08/09/2021Microcystin14.9000.150YesNoCommunity ParkLAWRTHUR061_21_222
Thurston13Lake Lawrence08/02/2021Microcystin0.1640.150NoViewBoat LaunchLAWRTHUR061_21_185
Thurston13Lake Lawrence07/20/2021Anatoxin-a<MDL0.010NoViewBoat LaunchLAWRTHUR061_21_145
Thurston13Lake Lawrence07/20/2021Microcystin0.3230.150NoViewBoat LaunchLAWRTHUR061_21_145
Thurston13Lake Lawrence06/22/2021Anatoxin-a<MDL0.010NoViewWhole lake, mid-lake sample collectedLAWRTHUR061_21_090
Thurston13Lake Lawrence06/22/2021Cylindrospermopsin<MDL0.025NoViewWhole lake, mid-lake sample collectedLAWRTHUR061_21_090
Thurston13Lake Lawrence06/22/2021Microcystin0.1800.150NoViewWhole lake, mid-lake sample collectedLAWRTHUR061_21_090
Thurston13Lake Lawrence06/22/2021Saxitoxin0.0240.020NoViewWhole lake, mid-lake sample collectedLAWRTHUR061_21_090
Thurston13Lake Lawrence06/09/2021Anatoxin-a0.0130.010NoViewWhole Lake, sample taken from East sideLAWRTHUR061_21_074
Thurston13Lake Lawrence06/09/2021Cylindrospermopsin<MDL0.025NoViewWhole Lake, sample taken from East sideLAWRTHUR061_21_074
Thurston13Lake Lawrence06/09/2021Microcystin1.2100.150NoViewWhole Lake, sample taken from East sideLAWRTHUR061_21_074
Thurston13Lake Lawrence06/09/2021Saxitoxin<MDL0.020NoViewWhole Lake, sample taken from East sideLAWRTHUR061_21_074
Thurston13Lake Lawrence09/28/2020Anatoxin-a<MDL0.010NoViewboat launchLAWRTHUR061_20_426
Thurston13Lake Lawrence09/28/2020Microcystin0.3130.150NoViewboat launchLAWRTHUR061_20_426
Thurston13Lake Lawrence09/21/2020Microcystin2.0800.150NoNocommunity parkLAWRTHUR061_20_396
Thurston13Lake Lawrence09/14/2020Microcystin1.1500.150NoViewcommunity parkLAWRTHUR061_20_372
Thurston13Lake Lawrence09/08/2020Microcystin2.8500.150NoViewcommunity parkLAWRTHUR061_20_356
Thurston13Lake Lawrence08/31/2020Microcystin21.0000.150YesViewCommunity ParkLAWRTHUR061_20_334
Thurston13Lake Lawrence08/24/2020Microcystin1.2300.150NoView LAWRTHUR061_20_315
Thurston13Lake Lawrence08/17/2020Microcystin15.5000.150YesViewWDFW boat launch & community parkLAWRTHUR061_20_274
Thurston13Lake Lawrence08/10/2020Anatoxin-a<MDL0.010NoView LAWRTHUR061_20_230
Thurston13Lake Lawrence08/10/2020Microcystin43.5000.150YesView LAWRTHUR061_20_230
Thurston13Lake Lawrence08/03/2020Microcystin1.1300.150NoViewWDFW boat launchLAWRTHUR061_20_204
Thurston13Lake Lawrence07/21/2020Microcystin2.6900.150NoNo LAWRTHUR061_20_164
Thurston13Lake Lawrence07/16/2020Anatoxin-a<MDL0.010NoNoBoat LaunchLAWRTHUR061_20_143
Thurston13Lake Lawrence07/16/2020Microcystin3.1700.150NoNoBoat LaunchLAWRTHUR061_20_143
Thurston13Lake Lawrence06/23/2020Anatoxin-a<MDL0.010NoViewWhole LakeLAWRTHUR061_20_101
Thurston13Lake Lawrence06/23/2020Cylindrospermopsin<MDL0.025NoViewWhole LakeLAWRTHUR061_20_101
Thurston13Lake Lawrence06/23/2020Microcystin0.2170.150NoViewWhole LakeLAWRTHUR061_20_101
Thurston13Lake Lawrence06/23/2020Saxitoxin<MDL0.020NoViewWhole LakeLAWRTHUR061_20_101
Thurston13Lake Lawrence11/12/2019Microcystin1.9000.150NoNo LAWRTHUR061
Thurston13Lake Lawrence11/06/2019Microcystin2.8900.150NoNo LAWRTHUR061_19_449
Thurston13Lake Lawrence10/28/2019Microcystin7.4000.150NoNo LAWRTHUR061_19_432
Thurston13Lake Lawrence10/22/2019Microcystin0.1530.150NoNo LAWRTHUR061_19_418
Thurston13Lake Lawrence10/14/2019Microcystin9.7200.150YesNo LAWRTHUR061_19_399
Thurston13Lake Lawrence10/09/2019Anatoxin-a0.0440.010NoNo LAWRTHUR061_19_387
Thurston13Lake Lawrence10/09/2019Microcystin17.7000.150YesNo LAWRTHUR061_19_387
Thurston13Lake Lawrence10/03/2019Anatoxin-a0.0200.010NoNo LAWRTHUR061_19_364
Thurston13Lake Lawrence10/03/2019Microcystin4.0500.150NoNo LAWRTHUR061_19_364
Thurston13Lake Lawrence09/24/2019Anatoxin-a0.0180.010NoNo LAWRTHUR061_19_328
Thurston13Lake Lawrence09/24/2019Cylindrospermopsin<MDL0.025NoNo LAWRTHUR061_19_328
Thurston13Lake Lawrence09/24/2019Microcystin3.0500.150NoNo LAWRTHUR061_19_328
Thurston13Lake Lawrence09/24/2019Saxitoxin<MDL0.020NoNo LAWRTHUR061_19_328
Thurston13Lake Lawrence08/27/2019Anatoxin-a<MDL0.010NoNo LAWRTHUR061_19_208
Thurston13Lake Lawrence08/27/2019Cylindrospermopsin<MDL0.025NoNo LAWRTHUR061_19_208
Thurston13Lake Lawrence08/27/2019Microcystin0.2450.150NoNo LAWRTHUR061_19_208
Thurston13Lake Lawrence08/27/2019Saxitoxin<MDL0.020NoNo LAWRTHUR061_19_208
Thurston13Lake Lawrence10/24/2018Anatoxin-a<MDL0.010NoView LAWRTHUR061_18_349
Thurston13Lake Lawrence10/24/2018Microcystin4.4100.150NoView LAWRTHUR061_18_349
Thurston13Lake Lawrence10/08/2018Anatoxin-a<MDL0.010NoView LAWRTHUR061_18_302
Thurston13Lake Lawrence10/08/2018Microcystin2.1000.150NoView LAWRTHUR061_18_302
Thurston13Lake Lawrence10/03/2018Anatoxin-a<MDL0.010NoView LAWRTHUR061_18_291
Thurston13Lake Lawrence10/03/2018Microcystin<MDL0.150NoView LAWRTHUR061_18_291
Thurston13Lake Lawrence09/25/2018Anatoxin-a0.0170.010NoView LAWRTHUR061_18_273
Thurston13Lake Lawrence09/25/2018Microcystin215.0000.150YesView LAWRTHUR061_18_273
Thurston13Lake Lawrence09/19/2018Anatoxin-a0.0330.010NoView LAWRTHUR061_18_254
Thurston13Lake Lawrence09/19/2018Microcystin<MDL0.150NoView LAWRTHUR061_18_254
Thurston13Lake Lawrence08/28/2018Anatoxin-a0.1800.010NoView LAWRTHUR061_18_198
Thurston13Lake Lawrence08/28/2018Microcystin2.1200.150NoView LAWRTHUR061_18_198
Thurston13Lake Lawrence08/15/2018Anatoxin-a0.0110.010NoView LAWRTHUR061_18_162
Thurston13Lake Lawrence08/15/2018Cylindrospermopsin<MDL0.025NoView LAWRTHUR061_18_162
Thurston13Lake Lawrence08/15/2018Microcystin<MDL0.150NoView LAWRTHUR061_18_162
Thurston13Lake Lawrence08/15/2018Saxitoxin<MDL0.020NoView LAWRTHUR061_18_162
Thurston13Lake Lawrence08/01/2018Anatoxin-a<MDL0.010NoView LAWRTHUR061_18_121
Thurston13Lake Lawrence08/01/2018Microcystin0.1590.150NoView LAWRTHUR061_18_121
Thurston13Lake Lawrence07/25/2018Anatoxin-a0.8860.010NoView LAWRTHUR061_18_108
Thurston13Lake Lawrence07/25/2018Microcystin<MDL0.150NoView LAWRTHUR061_18_108
Thurston13Lake Lawrence06/20/2018Anatoxin-a<MDL0.010NoView LAWRTHUR061_18_065
Thurston13Lake Lawrence06/20/2018Microcystin<MDL0.150NoView LAWRTHUR061_18_065
Thurston13Lake Lawrence10/03/2017Anatoxin-a0.0230.010NoNo LAWRTHUR061_17_276
Thurston13Lake Lawrence10/03/2017Microcystin<MDL0.150NoNo LAWRTHUR061_17_276
Thurston13Lake Lawrence09/26/2017Anatoxin-a<MDL0.010NoNo LAWRTHUR061_17_259
Thurston13Lake Lawrence09/26/2017Microcystin0.1670.150NoNo LAWRTHUR061_17_259
Thurston13Lake Lawrence09/20/2017Anatoxin-a<MDL0.010NoView LAWRTHUR061_17_249
Thurston13Lake Lawrence09/20/2017Microcystin8.5400.150YesView LAWRTHUR061_17_249
Thurston13Lake Lawrence08/16/2017Anatoxin-a<MDL0.010NoNo LAWRTHUR061_17_185
Thurston13Lake Lawrence08/16/2017Microcystin<MDL0.150NoNo LAWRTHUR061_17_185
Thurston13Lake Lawrence07/19/2017Anatoxin-a<MDL0.010NoNo LAWRTHUR061_17_139
Thurston13Lake Lawrence07/19/2017Microcystin0.5000.150NoNo LAWRTHUR061_17_139
Thurston13Lake Lawrence09/14/2016Anatoxin-a<MDL0.010NoNo LAwrthur000_16_215
Thurston13Lake Lawrence09/14/2016Microcystin0.9000.160NoNo LAwrthur000_16_215
Thurston13Lake Lawrence09/12/2016Anatoxin-a<MDL0.010NoNo LawrThur061_16_209
Thurston13Lake Lawrence09/12/2016Microcystin0.2330.200NoNo LawrThur061_16_209
Thurston13Lake Lawrence10/19/2015Microcystin0.3420.160NoNo lawrthur061_15_476
Thurston13Lake Lawrence10/13/2015Anatoxin-a<MDL0.010NoView LAWRTHUR061_15_465
Thurston13Lake Lawrence10/13/2015Microcystin<MDL0.160NoView LAWRTHUR061_15_465
Thurston13Lake Lawrence10/05/2015Anatoxin-a<MDL0.010NoView LAWRTHUR061_15_443
Thurston13Lake Lawrence10/05/2015Microcystin4.2700.160NoView LAWRTHUR061_15_443
Thurston13Lake Lawrence09/23/2015Anatoxin-a<MDL0.010NoNo LAWRTHUR061_15_415
Thurston13Lake Lawrence09/23/2015Microcystin0.2770.160NoNo LAWRTHUR061_15_415
Thurston13Lake Lawrence08/19/2015Anatoxin-a0.0660.010NoView LAWRTHUR061_15_316
Thurston13Lake Lawrence08/19/2015Microcystin<MDL0.160NoView LAWRTHUR061_15_316
Thurston13Lake Lawrence08/19/2015Saxitoxin<MDL0.020NoView LAWRTHUR061_15_316
Thurston13Lake Lawrence07/01/2015Anatoxin-a<MDL0.010NoView LAWRTHUR061_15_178
Thurston13Lake Lawrence07/01/2015Anatoxin-a<MDL0.010NoNo LAWRTHUR061_15_178
Thurston13Lake Lawrence07/01/2015Microcystin<MDL0.160NoNo LAWRTHUR061_15_178
Thurston13Lake Lawrence07/01/2015Microcystin<MDL0.160NoView LAWRTHUR061_15_178
Thurston13Lake Lawrence06/24/2015Anatoxin-a0.1830.010NoNo LAWRTHUR061_15_159
Thurston13Lake Lawrence06/24/2015Microcystin<MDL0.160NoNo LAWRTHUR061_15_159
Thurston13Lake Lawrence06/03/2015Anatoxin-a<MDL0.010NoView LAWRTHUR061_15_132
Thurston13Lake Lawrence06/03/2015Microcystin<MDL0.160NoView LAWRTHUR061_15_132
Thurston13Lake Lawrence05/20/2015Anatoxin-a192.0000.010YesView LAWRTHUR061_15_111
Thurston13Lake Lawrence05/20/2015Microcystin<MDL0.160NoView LAWRTHUR061_15_111
Thurston13Lake Lawrence05/20/2015Saxitoxin<MDL0.020NoView LAWRTHUR061_15_111
Thurston13Lake Lawrence05/18/2015Anatoxin-a<MDL0.010NoView LAWRTHUR061_15_122
Thurston13Lake Lawrence05/18/2015Microcystin<MDL0.160NoView LAWRTHUR061_15_122
Thurston13Lake Lawrence07/29/2014Anatoxin-a0.2080.010NoView LAWRTHUR14_115
Thurston13Lake Lawrence07/29/2014Microcystin<MDL0.160NoView LAWRTHUR14_115
Thurston13Lake Lawrence07/22/2014Anatoxin-a0.0310.010NoView LAWRTHUR14_107
Thurston13Lake Lawrence07/22/2014Microcystin<MDL0.160NoView LAWRTHUR14_107
Thurston13Lake Lawrence07/14/2014Anatoxin-a0.0130.010NoNo LAWRTHUR14_093
Thurston13Lake Lawrence07/14/2014Microcystin<MDL0.160NoNo LAWRTHUR14_093
Thurston13Lake Lawrence10/22/2013Anatoxin-a0.1720.010NoNo LAWTHUR13_225
Thurston13Lake Lawrence10/22/2013Microcystin80.5000.160YesNo LAWTHUR13_225
Thurston13Lake Lawrence10/16/2013Microcystin7.3000.160NoView LAWTHUR13_213
Thurston13Lake Lawrence09/05/2012Anatoxin-a<MDL0.019NoView  
Thurston13Lake Lawrence09/05/2012Microcystin<MDL0.050NoView  
Thurston13Lake Lawrence09/05/2012Saxitoxin<MDL0.020NoView  
Thurston13Lake Lawrence05/17/2011Microcystin3.8100.050NoView  
Thurston13Lake Lawrence03/23/2011Anatoxin-a<MDL0.019NoView  
Thurston13Lake Lawrence03/23/2011Microcystin0.7730.050NoView  
Thurston13Lake Lawrence02/16/2011Microcystin0.2560.050NoView  
Thurston13Lake Lawrence02/09/2011Microcystin18.7000.050YesView  
Thurston13Lake Lawrence02/02/2011Microcystin0.6770.050NoView  
Thurston13Lake Lawrence01/26/2011Microcystin5.1000.050NoView  
Thurston13Lake Lawrence01/19/2011Microcystin29.6000.050YesView  
Thurston13Lake Lawrence01/12/2011Microcystin<MDL0.050NoView  
Thurston13Lake Lawrence01/05/2011Anatoxin-a<MDL0.019NoView  
Thurston13Lake Lawrence01/05/2011Microcystin5.1000.050NoView  
Thurston13Lake Lawrence12/16/2010Microcystin0.1160.050NoView  
Thurston13Lake Lawrence12/07/2010Microcystin0.3950.050NoView  
Thurston13Lake Lawrence11/29/2010Microcystin40.0000.050YesView  
Thurston13Lake Lawrence11/16/2010Microcystin0.2550.050NoView  
Thurston13Lake Lawrence11/03/2010Microcystin791.0000.050YesView  
Thurston13Lake Lawrence10/28/2010Microcystin70.0000.050YesView  
Thurston13Lake Lawrence10/19/2010Microcystin585.0000.050YesView  
Thurston13Lake Lawrence10/12/2010Microcystin1.5700.050NoView  
Thurston13Lake Lawrence10/05/2010Microcystin182.0000.050YesNo  
Thurston13Lake Lawrence10/05/2010Microcystin0.4590.050NoNo  
Thurston13Lake Lawrence10/05/2010Microcystin0.4480.050NoNo  
Thurston13Lake Lawrence10/05/2010Microcystin1.3900.050NoNo  
Thurston13Lake Lawrence09/28/2010Anatoxin-a<MDL0.019NoNo  
Thurston13Lake Lawrence09/28/2010Anatoxin-a<MDL0.019NoNo  
Thurston13Lake Lawrence09/28/2010Anatoxin-a<MDL0.019NoNo  
Thurston13Lake Lawrence09/28/2010Anatoxin-a<MDL0.019NoNo  
Thurston13Lake Lawrence09/28/2010Microcystin0.7680.050NoNo  
Thurston13Lake Lawrence09/28/2010Microcystin0.2380.050NoNo  
Thurston13Lake Lawrence09/28/2010Microcystin0.6160.050NoNo  
Thurston13Lake Lawrence09/28/2010Microcystin0.0920.050NoNo  
Thurston13Lake Lawrence08/19/2009Anatoxin-a<MDL0.038NoNo  
Thurston13Lake Lawrence08/19/2009Anatoxin-a<MDL0.038NoNo  
Thurston13Lake Lawrence08/19/2009Anatoxin-a<MDL0.038NoNo  
Thurston13Lake Lawrence08/19/2009Microcystin<MDL0.050NoNo  
Thurston13Lake Lawrence08/19/2009Microcystin<MDL0.050NoNo  
Thurston13Lake Lawrence08/19/2009Microcystin<MDL0.050NoNo  

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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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