Protecting Public Health and the Environment.

Recreation Water Quality Health Advisories

This page provides information related to current recreation water quality health advisories involving cyanobacteria harmful algal blooms (HAB) and E. coli bacteria. The map and information table are updated with the most current information as health advisories are issued and lifted throughout the season.

 

Remember: Only a fraction of all water bodies in Idaho are monitored due to limited physical and monetary resources. The absence of an advisory is not an indication that a HAB or E. coli is not present at a water body. You are your own best advocate when ensuring your safety, and that of your family and pets. Be aware and "when in doubt, stay out."

 

 

 

 

 

 

 

 

Click pin for detailed information. Active HAB Advisory: Active E. coli Advisory: Lifted Advisory:

Active Harmful Algal Bloom Advisories


County Waterbody Date Issued Dominant Taxa DEQ Contact
Twin Falls Salmon Falls Creek Reservoir 7/9/2019 Sean Woodhead, DEQ Twin Falls Regional Office, (208) 736-2190
Kootenai Fernan Lake 7/25/2019 Dolichospermum, Woronichinia Kristin Larson, Coeur d'Alene Regional Office, 208-769-1422
Camas Mormon Reservoir 7/25/2019 Aphanizomenon Sara Kaster, DEQ Twins Falls Regional Office, (208) 736-2190
Kootenai Twin Lakes 7/29/2019 Microcystis, Gloeotrichia, Woronichinia Coeur d Alene Regional Office, Bob Steed / Kristin Larson, 208-769-1422
Ada Blacks Creek Reservoir 7/31/2019 Anabaena, Microcystis, Woronichinia DEQ Boise Regional Office, Chase Cusack, (208) 373-0490
Elmore Mountain Home Reservoir 7/31/2019 Gloeotrichia, Aphanizomenon DEQ Boise Regional Office, Chase Cusack, (208) 373-0490
Ada Indian Creek Reservoir 7/31/2019 Microcystis, Woronichinia DEQ Boise Regional Office, Chase Cusack, (208) 373-0490
Adams Big Bar to Hells Canyon Dam 8/9/2019 Aphanizomenon DEQ Boise Regional Office, Chase Cusack, (208) 373-0490
Blaine Magic Reservoir 8/9/2019 Gloeotrichia and Anabaena DEQ Twin Falls Regional Office, Sara Kaster (208) 736-2190
Canyon Lake Lowell 8/15/2019 Anabaena, Microcystis, Aphanizomenon DEQ Boise Regional Office, Chase Cusack, (208) 373-0490
Elmore Little Camas Reservoir 8/16/2019 Microcystis, Aphanizomenon DEQ Boise Regional Office, Chase Cusack, (208) 373-0490
Gooding Thorn Creek Reservoir 8/23/2019 Aphanizomenon Twin Falls Regional Office, Sara Kaster, (208) 736-2190
Valley Cascade Reservoir 9/6/2019 Anabaena, Microcystis, Woronichinia DEQ Boise Regional Office, Chase Cusack, (208) 373-0490
Latah Hordemann Pond 9/13/2019 Anabaena, Mycrocystis DEQ Lewiston Regional Office, Sujata Connell, (208) 799-4370

Lifted Harmful Algal Bloom Advisories


County Waterbody Date Issued Date Lifted
Washington Brownlee Reservoir 7/16/2019 9/12/2019
There are no current E. coli advisories at this time.

 

 


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Report a Bloom

While you're recreating, notify us of a possible harmful algal bloom. You can contact one of our six regional offices, send an email to algae@deq.idaho.gov, or download the bloomWatch app. To help us investigate, please provide photos and water body location.

Download the bloomWatch app to learn what to look for and report what you found. Learn more.

Additional Information

Related Pages

Cyanobacteria Harmful Algal Blooms

Cyanotoxins: Information for Public Water Systems