WRIA Summary
Here is a table showing toxins in lakes by WRIA. You can custom sort the table by selecting the collumn header.
WRIA
Number | WRIA | Parameter | Number of
Samples | Number of
Exceedings | From
Year | To
Year |
| 1 | Nooksack | Anatoxin-a | 114 | 6 | 2010 | 2024 |
| 1 | Nooksack | Cylindrospermopsin | 18 | 0 | 2018 | 2024 |
| 1 | Nooksack | Microcystin | 124 | 33 | 2010 | 2025 |
| 1 | Nooksack | Saxitoxin | 21 | 0 | 2010 | 2024 |
| 2 | San Juan | Anatoxin-a | 9 | 0 | 2019 | 2022 |
| 2 | San Juan | Cylindrospermopsin | 4 | 0 | 2019 | 2022 |
| 2 | San Juan | Microcystin | 14 | 3 | 2019 | 2023 |
| 2 | San Juan | Saxitoxin | 4 | 0 | 2019 | 2022 |
| 3 | Lower Skagit / Samish | Anatoxin-a | 269 | 20 | 2009 | 2024 |
| 3 | Lower Skagit / Samish | Cylindrospermopsin | 32 | 0 | 2010 | 2024 |
| 3 | Lower Skagit / Samish | Microcystin | 332 | 102 | 2008 | 2024 |
| 3 | Lower Skagit / Samish | Saxitoxin | 34 | 0 | 2010 | 2024 |
| 4 | Upper Skagit | Anatoxin-a | 2 | 0 | 2023 | 2023 |
| 4 | Upper Skagit | Cylindrospermopsin | 2 | 0 | 2023 | 2023 |
| 4 | Upper Skagit | Microcystin | 2 | 0 | 2023 | 2023 |
| 4 | Upper Skagit | Saxitoxin | 2 | 0 | 2023 | 2023 |
| 5 | Stillaguamish | Anatoxin-a | 115 | 0 | 2009 | 2024 |
| 5 | Stillaguamish | Cylindrospermopsin | 15 | 0 | 2011 | 2024 |
| 5 | Stillaguamish | Microcystin | 125 | 12 | 2007 | 2024 |
| 5 | Stillaguamish | Saxitoxin | 15 | 0 | 2011 | 2024 |
| 6 | Island | Anatoxin-a | 147 | 42 | 2009 | 2024 |
| 6 | Island | Cylindrospermopsin | 24 | 0 | 2013 | 2023 |
| 6 | Island | Microcystin | 170 | 38 | 2007 | 2024 |
| 6 | Island | Saxitoxin | 25 | 0 | 2012 | 2023 |
| 7 | Snohomish | Anatoxin-a | 521 | 5 | 2009 | 2024 |
| 7 | Snohomish | Cylindrospermopsin | 78 | 0 | 2009 | 2024 |
| 7 | Snohomish | Microcystin | 602 | 74 | 2007 | 2024 |
| 7 | Snohomish | Saxitoxin | 87 | 0 | 2009 | 2024 |
| 8 | Cedar-Sammamish | Anatoxin-a | 6040 | 7 | 2009 | 2024 |
| 8 | Cedar-Sammamish | Cylindrospermopsin | 55 | 0 | 2010 | 2024 |
| 8 | Cedar-Sammamish | Microcystin | 8449 | 138 | 2007 | 2024 |
| 8 | Cedar-Sammamish | Saxitoxin | 58 | 0 | 2010 | 2024 |
| 9 | Duwamish-Green | Anatoxin-a | 376 | 5 | 2009 | 2024 |
| 9 | Duwamish-Green | Cylindrospermopsin | 40 | 0 | 2009 | 2024 |
| 9 | Duwamish-Green | Microcystin | 483 | 88 | 2007 | 2024 |
| 9 | Duwamish-Green | Saxitoxin | 44 | 0 | 2009 | 2024 |
| 10 | Puyallup-White | Anatoxin-a | 149 | 0 | 2009 | 2024 |
| 10 | Puyallup-White | Cylindrospermopsin | 19 | 0 | 2015 | 2024 |
| 10 | Puyallup-White | Microcystin | 191 | 45 | 2008 | 2024 |
| 10 | Puyallup-White | Saxitoxin | 28 | 0 | 2014 | 2024 |
| 11 | Nisqually | Anatoxin-a | 382 | 24 | 2009 | 2024 |
| 11 | Nisqually | Cylindrospermopsin | 34 | 0 | 2010 | 2024 |
| 11 | Nisqually | Microcystin | 494 | 75 | 2007 | 2024 |
| 11 | Nisqually | Saxitoxin | 48 | 0 | 2010 | 2024 |
| 12 | Chambers-Clover | Anatoxin-a | 339 | 5 | 2009 | 2025 |
| 12 | Chambers-Clover | Cylindrospermopsin | 50 | 0 | 2009 | 2022 |
| 12 | Chambers-Clover | Microcystin | 602 | 279 | 2007 | 2025 |
| 12 | Chambers-Clover | Saxitoxin | 71 | 1 | 2009 | 2022 |
| 13 | Deschutes | Anatoxin-a | 365 | 7 | 2009 | 2024 |
| 13 | Deschutes | Cylindrospermopsin | 79 | 0 | 2012 | 2024 |
| 13 | Deschutes | Microcystin | 537 | 99 | 2008 | 2025 |
| 13 | Deschutes | Saxitoxin | 106 | 0 | 2012 | 2024 |
| 14 | Kennedy-Goldsborough | Anatoxin-a | 174 | 17 | 2013 | 2023 |
| 14 | Kennedy-Goldsborough | Cylindrospermopsin | 20 | 0 | 2017 | 2023 |
| 14 | Kennedy-Goldsborough | Microcystin | 128 | 0 | 2007 | 2023 |
| 14 | Kennedy-Goldsborough | Saxitoxin | 33 | 0 | 2014 | 2023 |
| 15 | Kitsap | Anatoxin-a | 176 | 7 | 2009 | 2024 |
| 15 | Kitsap | Cylindrospermopsin | 22 | 0 | 2011 | 2024 |
| 15 | Kitsap | Microcystin | 297 | 71 | 2007 | 2024 |
| 15 | Kitsap | Saxitoxin | 28 | 0 | 2011 | 2024 |
| 17 | Quilcene-Snow | Anatoxin-a | 556 | 101 | 2009 | 2025 |
| 17 | Quilcene-Snow | Cylindrospermopsin | 18 | 0 | 2018 | 2024 |
| 17 | Quilcene-Snow | Microcystin | 649 | 30 | 2007 | 2025 |
| 17 | Quilcene-Snow | Saxitoxin | 18 | 0 | 2018 | 2024 |
| 18 | Elwha-Dungeness | Anatoxin-a | 3 | 0 | 2015 | 2016 |
| 18 | Elwha-Dungeness | Microcystin | 3 | 1 | 2015 | 2016 |
| 20 | Soleduc | Anatoxin-a | 6 | 0 | 2013 | 2019 |
| 20 | Soleduc | Cylindrospermopsin | 3 | 0 | 2019 | 2019 |
| 20 | Soleduc | Microcystin | 6 | 0 | 2013 | 2019 |
| 20 | Soleduc | Saxitoxin | 3 | 0 | 2019 | 2019 |
| 21 | Queets-Quinault | Anatoxin-a | 2 | 0 | 2015 | 2015 |
| 21 | Queets-Quinault | Microcystin | 2 | 0 | 2015 | 2015 |
| 22 | Lower Chehalis | Anatoxin-a | 24 | 0 | 2009 | 2024 |
| 22 | Lower Chehalis | Cylindrospermopsin | 7 | 0 | 2019 | 2024 |
| 22 | Lower Chehalis | Microcystin | 42 | 8 | 2008 | 2024 |
| 22 | Lower Chehalis | Saxitoxin | 7 | 0 | 2019 | 2024 |
| 23 | Upper Chehalis | Anatoxin-a | 26 | 1 | 2014 | 2022 |
| 23 | Upper Chehalis | Cylindrospermopsin | 8 | 0 | 2014 | 2022 |
| 23 | Upper Chehalis | Microcystin | 38 | 6 | 2008 | 2022 |
| 23 | Upper Chehalis | Saxitoxin | 10 | 0 | 2014 | 2022 |
| 24 | Willapa | Anatoxin-a | 8 | 0 | 2015 | 2024 |
| 24 | Willapa | Cylindrospermopsin | 5 | 0 | 2019 | 2024 |
| 24 | Willapa | Microcystin | 8 | 3 | 2015 | 2024 |
| 24 | Willapa | Saxitoxin | 5 | 0 | 2019 | 2024 |
| 26 | Cowlitz | Anatoxin-a | 47 | 0 | 2009 | 2024 |
| 26 | Cowlitz | Cylindrospermopsin | 24 | 0 | 2018 | 2024 |
| 26 | Cowlitz | Microcystin | 69 | 0 | 2007 | 2024 |
| 26 | Cowlitz | Saxitoxin | 10 | 0 | 2019 | 2024 |
| 27 | Lewis | Anatoxin-a | 14 | 0 | 2021 | 2024 |
| 27 | Lewis | Cylindrospermopsin | 12 | 0 | 2021 | 2024 |
| 27 | Lewis | Microcystin | 20 | 0 | 2008 | 2024 |
| 27 | Lewis | Saxitoxin | 11 | 0 | 2021 | 2024 |
| 28 | Salmon-Washougal | Anatoxin-a | 358 | 12 | 2009 | 2024 |
| 28 | Salmon-Washougal | Cylindrospermopsin | 40 | 0 | 2014 | 2024 |
| 28 | Salmon-Washougal | Microcystin | 381 | 87 | 2007 | 2024 |
| 28 | Salmon-Washougal | Saxitoxin | 40 | 0 | 2014 | 2024 |
| 29 | Wind-White Salmon | Anatoxin-a | 40 | 2 | 2009 | 2024 |
| 29 | Wind-White Salmon | Cylindrospermopsin | 8 | 0 | 2019 | 2023 |
| 29 | Wind-White Salmon | Microcystin | 47 | 12 | 2009 | 2024 |
| 29 | Wind-White Salmon | Saxitoxin | 8 | 0 | 2019 | 2024 |
| 30 | Klickitat | Anatoxin-a | 24 | 1 | 2015 | 2024 |
| 30 | Klickitat | Cylindrospermopsin | 4 | 0 | 2018 | 2023 |
| 30 | Klickitat | Microcystin | 26 | 3 | 2015 | 2024 |
| 30 | Klickitat | Saxitoxin | 5 | 0 | 2018 | 2024 |
| 31 | Rock-Glade | Anatoxin-a | 22 | 0 | 2021 | 2024 |
| 31 | Rock-Glade | Cylindrospermopsin | 1 | 0 | 2021 | 2021 |
| 31 | Rock-Glade | Microcystin | 4 | 1 | 2021 | 2024 |
| 31 | Rock-Glade | Saxitoxin | 1 | 0 | 2021 | 2021 |
| 32 | Walla Walla | Anatoxin-a | 54 | 3 | 2015 | 2024 |
| 32 | Walla Walla | Cylindrospermopsin | 9 | 0 | 2019 | 2022 |
| 32 | Walla Walla | Microcystin | 57 | 14 | 2008 | 2024 |
| 32 | Walla Walla | Saxitoxin | 10 | 0 | 2019 | 2022 |
| 33 | Lower Snake | Anatoxin-a | 15 | 0 | 2021 | 2024 |
| 33 | Lower Snake | Cylindrospermopsin | 3 | 0 | 2021 | 2023 |
| 33 | Lower Snake | Microcystin | 13 | 4 | 2021 | 2024 |
| 33 | Lower Snake | Saxitoxin | 3 | 0 | 2021 | 2023 |
| 34 | Palouse | Anatoxin-a | 13 | 0 | 2012 | 2024 |
| 34 | Palouse | Cylindrospermopsin | 6 | 0 | 2014 | 2023 |
| 34 | Palouse | Microcystin | 17 | 3 | 2008 | 2024 |
| 34 | Palouse | Saxitoxin | 6 | 0 | 2014 | 2023 |
| 35 | Middle Snake | Anatoxin-a | 55 | 1 | 2012 | 2024 |
| 35 | Middle Snake | Cylindrospermopsin | 14 | 0 | 2019 | 2024 |
| 35 | Middle Snake | Microcystin | 56 | 24 | 2012 | 2024 |
| 35 | Middle Snake | Saxitoxin | 14 | 0 | 2019 | 2024 |
| 36 | Esquatzel Coulee | Anatoxin-a | 83 | 1 | 2015 | 2024 |
| 36 | Esquatzel Coulee | Cylindrospermopsin | 4 | 0 | 2020 | 2022 |
| 36 | Esquatzel Coulee | Microcystin | 88 | 30 | 2015 | 2024 |
| 36 | Esquatzel Coulee | Saxitoxin | 4 | 0 | 2020 | 2022 |
| 37 | Lower Yakima | Anatoxin-a | 20 | 1 | 2014 | 2024 |
| 37 | Lower Yakima | Cylindrospermopsin | 9 | 0 | 2020 | 2024 |
| 37 | Lower Yakima | Microcystin | 14 | 0 | 2014 | 2024 |
| 37 | Lower Yakima | Saxitoxin | 9 | 0 | 2020 | 2024 |
| 38 | Naches | Anatoxin-a | 3 | 0 | 2024 | 2024 |
| 38 | Naches | Cylindrospermopsin | 3 | 0 | 2024 | 2024 |
| 38 | Naches | Microcystin | 3 | 0 | 2024 | 2024 |
| 38 | Naches | Saxitoxin | 3 | 0 | 2024 | 2024 |
| 39 | Upper Yakima | Anatoxin-a | 35 | 0 | 2014 | 2024 |
| 39 | Upper Yakima | Cylindrospermopsin | 12 | 0 | 2018 | 2024 |
| 39 | Upper Yakima | Microcystin | 40 | 11 | 2014 | 2024 |
| 39 | Upper Yakima | Saxitoxin | 14 | 0 | 2018 | 2024 |
| 40 | Alkali-Squilchuck | Anatoxin-a | 84 | 16 | 2012 | 2024 |
| 40 | Alkali-Squilchuck | Cylindrospermopsin | 14 | 0 | 2021 | 2024 |
| 40 | Alkali-Squilchuck | Microcystin | 28 | 0 | 2012 | 2024 |
| 40 | Alkali-Squilchuck | Saxitoxin | 11 | 0 | 2021 | 2024 |
| 41 | Lower Crab | Anatoxin-a | 30 | 0 | 2018 | 2023 |
| 41 | Lower Crab | Cylindrospermopsin | 15 | 0 | 2018 | 2023 |
| 41 | Lower Crab | Microcystin | 308 | 96 | 2007 | 2024 |
| 41 | Lower Crab | Saxitoxin | 15 | 0 | 2018 | 2023 |
| 42 | Grand Coulee | Anatoxin-a | 5 | 0 | 2017 | 2023 |
| 42 | Grand Coulee | Cylindrospermopsin | 2 | 0 | 2022 | 2023 |
| 42 | Grand Coulee | Microcystin | 5 | 0 | 2017 | 2023 |
| 42 | Grand Coulee | Saxitoxin | 2 | 0 | 2022 | 2023 |
| 43 | Upper Crab-Wilson | Anatoxin-a | 4 | 0 | 2015 | 2021 |
| 43 | Upper Crab-Wilson | Microcystin | 5 | 1 | 2015 | 2023 |
| 44 | Moses Coulee | Anatoxin-a | 13 | 0 | 2009 | 2024 |
| 44 | Moses Coulee | Cylindrospermopsin | 2 | 0 | 2023 | 2024 |
| 44 | Moses Coulee | Microcystin | 28 | 1 | 2007 | 2024 |
| 44 | Moses Coulee | Saxitoxin | 2 | 0 | 2023 | 2024 |
| 45 | Wenatchee | Anatoxin-a | 15 | 0 | 2014 | 2024 |
| 45 | Wenatchee | Cylindrospermopsin | 8 | 0 | 2018 | 2023 |
| 45 | Wenatchee | Microcystin | 21 | 6 | 2014 | 2024 |
| 45 | Wenatchee | Saxitoxin | 8 | 0 | 2018 | 2023 |
| 47 | Chelan | Anatoxin-a | 1 | 0 | 2024 | 2024 |
| 47 | Chelan | Cylindrospermopsin | 1 | 0 | 2024 | 2024 |
| 47 | Chelan | Microcystin | 1 | 0 | 2024 | 2024 |
| 47 | Chelan | Saxitoxin | 1 | 0 | 2024 | 2024 |
| 48 | Methow | Anatoxin-a | 4 | 0 | 2015 | 2022 |
| 48 | Methow | Cylindrospermopsin | 2 | 0 | 2022 | 2022 |
| 48 | Methow | Microcystin | 4 | 0 | 2015 | 2022 |
| 48 | Methow | Saxitoxin | 2 | 0 | 2022 | 2022 |
| 49 | Okanogan | Anatoxin-a | 2 | 1 | 2018 | 2020 |
| 49 | Okanogan | Cylindrospermopsin | 1 | 0 | 2018 | 2018 |
| 49 | Okanogan | Microcystin | 2 | 1 | 2018 | 2020 |
| 49 | Okanogan | Saxitoxin | 1 | 0 | 2018 | 2018 |
| 50 | Foster | Anatoxin-a | 181 | 87 | 2011 | 2024 |
| 50 | Foster | Cylindrospermopsin | 1 | 0 | 2022 | 2022 |
| 50 | Foster | Microcystin | 170 | 0 | 2011 | 2024 |
| 50 | Foster | Saxitoxin | 2 | 0 | 2022 | 2024 |
| 51 | Nespelem | Anatoxin-a | 2 | 0 | 2011 | 2013 |
| 51 | Nespelem | Microcystin | 3 | 0 | 2011 | 2013 |
| 54 | Lower Spokane | Anatoxin-a | 30 | 4 | 2010 | 2024 |
| 54 | Lower Spokane | Cylindrospermopsin | 9 | 0 | 2019 | 2024 |
| 54 | Lower Spokane | Microcystin | 37 | 14 | 2009 | 2024 |
| 54 | Lower Spokane | Saxitoxin | 14 | 0 | 2010 | 2024 |
| 55 | Little Spokane | Anatoxin-a | 7 | 0 | 2010 | 2023 |
| 55 | Little Spokane | Cylindrospermopsin | 5 | 0 | 2021 | 2023 |
| 55 | Little Spokane | Microcystin | 7 | 0 | 2010 | 2023 |
| 55 | Little Spokane | Saxitoxin | 5 | 0 | 2021 | 2023 |
| 56 | Hangman | Anatoxin-a | 2 | 0 | 2020 | 2023 |
| 56 | Hangman | Cylindrospermopsin | 1 | 0 | 2023 | 2023 |
| 56 | Hangman | Microcystin | 2 | 0 | 2020 | 2023 |
| 56 | Hangman | Saxitoxin | 1 | 0 | 2023 | 2023 |
| 57 | Middle Spokane | Anatoxin-a | 28 | 0 | 2009 | 2024 |
| 57 | Middle Spokane | Cylindrospermopsin | 10 | 0 | 2016 | 2024 |
| 57 | Middle Spokane | Microcystin | 45 | 8 | 2008 | 2024 |
| 57 | Middle Spokane | Saxitoxin | 7 | 0 | 2020 | 2024 |
| 58 | Middle Lake Roosevelt | Anatoxin-a | 1 | 0 | 2013 | 2013 |
| 58 | Middle Lake Roosevelt | Microcystin | 1 | 0 | 2013 | 2013 |
| 59 | Colville | Anatoxin-a | 15 | 0 | 2021 | 2024 |
| 59 | Colville | Cylindrospermopsin | 10 | 0 | 2021 | 2024 |
| 59 | Colville | Microcystin | 21 | 8 | 2009 | 2024 |
| 59 | Colville | Saxitoxin | 10 | 0 | 2021 | 2024 |
| 60 | Kettle | Anatoxin-a | 4 | 1 | 2020 | 2023 |
| 60 | Kettle | Cylindrospermopsin | 3 | 0 | 2020 | 2023 |
| 60 | Kettle | Microcystin | 4 | 0 | 2020 | 2023 |
| 60 | Kettle | Saxitoxin | 3 | 0 | 2020 | 2023 |
| 61 | Upper Lake Roosevelt | Anatoxin-a | 4 | 0 | 2012 | 2024 |
| 61 | Upper Lake Roosevelt | Cylindrospermopsin | 2 | 0 | 2012 | 2024 |
| 61 | Upper Lake Roosevelt | Microcystin | 5 | 0 | 2012 | 2024 |
| 61 | Upper Lake Roosevelt | Saxitoxin | 2 | 0 | 2012 | 2024 |
| 62 | Pend Oreille | Anatoxin-a | 1 | 0 | 2023 | 2023 |
| 62 | Pend Oreille | Cylindrospermopsin | 1 | 0 | 2023 | 2023 |
| 62 | Pend Oreille | Microcystin | 1 | 0 | 2023 | 2023 |
| 62 | Pend Oreille | Saxitoxin | 1 | 0 | 2023 | 2023 |