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
toxicalgae 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:
County WRIA Number Site Collect Date Parameter Toxin Conc. (µg/L) MDL (µg/L) Above State Guideline Additional Information Sample Location Ecology Tracking Number
Klickitat 29 Rowland Lake 06/22/2026 Anatoxin-a 0.178 0.010 No No Near Old Hwy 8 ROWLKLIC098_26_058
Klickitat 29 Rowland Lake 06/22/2026 Microcystin 9.500 0.150 Yes No Near Old Hwy 8 ROWLKLIC098_26_058
Klickitat 29 Rowland Lake 11/04/2025 Anatoxin-a <MDL 0.010 No No SW"Beach" ROWLKLIC098_25_488
Klickitat 29 Rowland Lake 11/04/2025 Microcystin 5.790 0.300 No No SW"Beach" ROWLKLIC098_25_488
Klickitat 29 Rowland Lake 10/20/2025 Anatoxin-a <MDL 0.010 No No Near Old Hwy 8 ROWLKLIC098_25_461
Klickitat 29 Rowland Lake 10/20/2025 Microcystin 3.750 0.300 No No Near Old Hwy 8 ROWLKLIC098_25_461
Klickitat 29 Rowland Lake 10/14/2025 Microcystin 11.700 0.300 Yes No Boat Launch & Eddy by Hwy ROWLKLIC098_25_452
Klickitat 29 Rowland Lake 10/06/2025 Anatoxin-a 0.048 0.010 No No Near Old Hwy 8 ROWLKLIC098_25_426
Klickitat 29 Rowland Lake 10/06/2025 Microcystin 156.000 0.300 Yes No Near Old Hwy 8 ROWLKLIC098_25_426
Klickitat 29 Rowland Lake 10/01/2025 Anatoxin-a 0.034 0.010 No No Boat Launch ROWLKLIC098_25_412
Klickitat 29 Rowland Lake 10/01/2025 Microcystin 2880.000 0.300 Yes No Boat Launch ROWLKLIC098_25_412
Klickitat 29 Rowland Lake 09/22/2025 Anatoxin-a 0.014 0.010 No No West Lake Edge ROWLKLIC098_25_377
Klickitat 29 Rowland Lake 09/22/2025 Microcystin 127.000 0.300 Yes No West Lake Edge ROWLKLIC098_25_377
Klickitat 29 Rowland Lake 09/30/2024 Anatoxin-a 0.018 0.010 No View SW area, boat launch, & NW area ROWLKLIC098_24_348
Klickitat 29 Rowland Lake 09/30/2024 Microcystin 26.600 0.300 Yes View SW area, boat launch, & NW area ROWLKLIC098_24_348
Klickitat 29 Rowland Lake 07/30/2024 Anatoxin-a <MDL 0.010 No No North side of the Lake ROWLKLIC098_24_120
Klickitat 29 Rowland Lake 07/30/2024 Microcystin <MDL 0.150 No No North side of the Lake ROWLKLIC098_24_120
Klickitat 29 Rowland Lake 07/30/2024 Saxitoxin <MDL 0.022 No No North side of the Lake ROWLKLIC098_24_120
Klickitat 29 Rowland Lake 09/21/2023 Anatoxin-a 0.057 0.010 No No Boat Launch ROWLKLIC098_23_311
Klickitat 29 Rowland Lake 09/21/2023 Anatoxin-a 0.180 0.010 No No West Edge ROWLKLIC098_23_310
Klickitat 29 Rowland Lake 09/21/2023 Cylindrospermopsin <MDL 0.025 No No West Edge ROWLKLIC098_23_310
Klickitat 29 Rowland Lake 09/21/2023 Cylindrospermopsin <MDL 0.025 No No Boat Launch ROWLKLIC098_23_311
Klickitat 29 Rowland Lake 09/21/2023 Microcystin 10.000 0.150 Yes No Boat Launch ROWLKLIC098_23_311
Klickitat 29 Rowland Lake 09/21/2023 Microcystin 10.000 0.150 Yes No West Edge ROWLKLIC098_23_310
Klickitat 29 Rowland Lake 09/21/2023 Saxitoxin 0.046 0.020 No No West Edge ROWLKLIC098_23_310
Klickitat 29 Rowland Lake 09/21/2023 Saxitoxin 0.026 0.020 No No Boat Launch ROWLKLIC098_23_311
Klickitat 29 Rowland Lake 08/08/2023 Anatoxin-a 0.043 0.010 No View Near Boat Launch ROWLKLIC098_23_153
Klickitat 29 Rowland Lake 08/08/2023 Cylindrospermopsin <MDL 0.025 No View Near Boat Launch ROWLKLIC098_23_153
Klickitat 29 Rowland Lake 08/08/2023 Microcystin 0.316 0.150 No View Near Boat Launch ROWLKLIC098_23_153
Klickitat 29 Rowland Lake 08/08/2023 Saxitoxin <MDL 0.020 No View Near Boat Launch ROWLKLIC098_23_153
Klickitat 29 Rowland Lake 09/07/2021 Anatoxin-a 2.040 0.010 Yes View Boat Launch ROWLKLIC098_21_337
Klickitat 29 Rowland Lake 09/07/2021 Microcystin 18.000 0.150 Yes View Boat Launch ROWLKLIC098_21_337
Klickitat 29 Rowland Lake 08/17/2021 Anatoxin-a 0.471 0.010 No View Rowland RowlKlic098_21_264
Klickitat 29 Rowland Lake 08/17/2021 Microcystin 1.490 0.150 No View Rowland RowlKlic098_21_264
Klickitat 29 Rowland Lake 08/10/2021 Anatoxin-a 0.099 0.010 No View Boat Launch ROWLKLIC098_21_226
Klickitat 29 Rowland Lake 08/10/2021 Microcystin 10.200 0.150 Yes View Boat Launch ROWLKLIC098_21_226
Klickitat 29 Rowland Lake 06/08/2021 Anatoxin-a <MDL 0.010 No View Near boat launch. ROWLKLIC098_21_069
Klickitat 29 Rowland Lake 06/08/2021 Cylindrospermopsin <MDL 0.025 No View Near boat launch. ROWLKLIC098_21_069
Klickitat 29 Rowland Lake 06/08/2021 Microcystin <MDL 0.150 No View Near boat launch. ROWLKLIC098_21_069
Klickitat 29 Rowland Lake 06/08/2021 Saxitoxin <MDL 0.020 No View Near boat launch. ROWLKLIC098_21_069
Klickitat 29 Rowland Lake 08/20/2020 Anatoxin-a <MDL 0.010 No View Boat Launch Area ROWLKLIC098_20_291
Klickitat 29 Rowland Lake 08/20/2020 Microcystin 16.800 0.150 Yes View Boat Launch Area ROWLKLIC098_20_291
Klickitat 29 Rowland Lake 10/02/2019 Anatoxin-a 0.294 0.010 No No ROWLKLIC098_19_362
Klickitat 29 Rowland Lake 10/02/2019 Anatoxin-a 0.025 0.010 No No ROWLKLIC098_19_361
Klickitat 29 Rowland Lake 10/02/2019 Microcystin 34.700 0.150 Yes No ROWLKLIC098_19_361
Klickitat 29 Rowland Lake 10/02/2019 Microcystin 575.000 0.150 Yes No ROWLKLIC098_19_362
Klickitat 29 Rowland Lake 07/26/2016 Anatoxin-a 0.187 0.010 No View ROWLKLIC098_16_118
Klickitat 29 Rowland Lake 07/26/2016 Microcystin NA 0.160 No View ROWLKLIC098_16_118
Klickitat 29 Rowland Lake 07/21/2016 Anatoxin-a 2.370 0.010 Yes View ROWLKLIC098_16_102
Klickitat 29 Rowland Lake 07/21/2016 Microcystin <MDL 0.200 No View ROWLKLIC098_16_102
Klickitat 29 Rowland Lake 07/30/2015 Anatoxin-a 0.148 0.010 No View ROWLKLIC098_15_242
Klickitat 29 Rowland Lake 07/30/2015 Anatoxin-a 0.105 0.010 No View ROWLKLIC098_15_240
Klickitat 29 Rowland Lake 07/30/2015 Anatoxin-a 0.144 0.010 No View ROWLKLIC098_15_241
Klickitat 29 Rowland Lake 07/30/2015 Microcystin 0.373 0.160 No View ROWLKLIC098_15_241
Klickitat 29 Rowland Lake 07/30/2015 Microcystin 0.216 0.160 No View ROWLKLIC098_15_240
Klickitat 29 Rowland Lake 07/30/2015 Microcystin <MDL 0.160 No View ROWLKLIC098_15_242
Klickitat 29 Rowland Lake 06/10/2015 Anatoxin-a 0.195 0.010 No View ROWLKLIC098_15_141
Klickitat 29 Rowland Lake 06/10/2015 Anatoxin-a 0.087 0.010 No View ROWLKLIC098_15_142
Klickitat 29 Rowland Lake 06/10/2015 Microcystin <MDL 0.160 No View ROWLKLIC098_15_142
Klickitat 29 Rowland Lake 06/10/2015 Microcystin <MDL 0.160 No View ROWLKLIC098_15_141
Klickitat 29 Rowland Lake 10/02/2014 Anatoxin-a <MDL 0.010 No View ROWLKLIC14_278
Klickitat 29 Rowland Lake 10/02/2014 microcystin 24.300 0.160 Yes View ROWLKLIC14_278
Klickitat 29 Rowland Lake 09/08/2014 Anatoxin-a <MDL 0.010 No View ROWLKLIC14_219
Klickitat 29 Rowland Lake 09/08/2014 Microcystin 0.336 0.160 No View ROWLKLIC14_219
Klickitat 29 Rowland Lake 07/01/2013 Anatoxin-a <MDL 0.010 No No ROWLKLIC13_02
Klickitat 29 Rowland Lake 07/01/2013 Microcystin <MDL 0.160 No No ROWLKLIC13_02
Klickitat 29 Rowland Lake 06/18/2013 Anatoxin-a 0.045 0.010 No View ROWLKLIC13_01
Klickitat 29 Rowland Lake 06/18/2013 Microcystin <MDL 0.050 No View ROWLKLIC13_01
Klickitat 29 Rowland Lake 09/28/2011 Anatoxin-a <MDL 0.019 No No
Klickitat 29 Rowland Lake 09/28/2011 Anatoxin-a <MDL 0.019 No No
Klickitat 29 Rowland Lake 09/28/2011 Microcystin 0.346 0.050 No No
Klickitat 29 Rowland Lake 09/28/2011 Microcystin 0.089 0.050 No No
Klickitat 29 Rowland Lake 05/06/2010 Microcystin <MDL 0.050 No View
Klickitat 29 Rowland Lake 10/20/2009 Microcystin 0.138 0.050 No No
Klickitat 29 Rowland Lake 10/15/2009 Microcystin 0.102 0.050 No No
Klickitat 29 Rowland Lake 10/06/2009 Microcystin 0.413 0.050 No No
Klickitat 29 Rowland Lake 09/28/2009 Microcystin 0.161 0.050 No No
Klickitat 29 Rowland Lake 09/22/2009 Anatoxin-a <MDL 0.300 No No
Klickitat 29 Rowland Lake 09/22/2009 Microcystin 8.110 0.050 Yes No
Klickitat 29 Rowland Lake 08/24/2009 Microcystin 0.515 0.050 No No
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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.