The District provides weekly water testing, Memorial Day-Labor Day. In the event of high e. Coli levels or harmful algae blooms (HABs), additional information and notices will be posted. 

Aug. 8, 2025: Heavy particulates in the water column throughout the lake this week. Small patches of blue-green algae around stagnant water on shorelines. Low levels of microsystins detected and water samples sent out for further analysis. As a reminder, avoid water that is foamy, scummy, thick like paint, bright pea-green, blue-green or where brownish red mats can be seen. Some species of cyanobacteria (know as harmful or blue-green algae) can produce cyanotoxins that can make people, pets, and other animals sick.

July 21, 2025: DEQ sample testing results show low microsystin levels below the pet safety values. Oregon Health Authority has lifted the precautionary advisory for Devils Lake.

June 26, 2025: Many reports of thick, blue-green scum, foamy, pea-green water and algae. As a reminder, avoid water that is foamy, scummy, thick like paint, bright pea-green, blue-green or where brownish red mats can be seen. DEQ will be testing Devils Lake on 6/30 for harmful algae and water quality. 

June 18, 2025: Priliminary DEQ results showed non-toxic algae at this time. 

June 10, 2025: Oregon Health Authority has issed a precautionary advisory for Devils Lake. Additional testing and monitoring is taking place. Avoid water that is foamy, scummy, thick like paint, bright pea-green, blue-green or where brownish red mats can be seen. Some species of cyanobacteria (know as harmful or blue-green algae) can produce cyanotoxins that can make people, pets, and other animals sick. 

Link for LIVE water level, temp, and rainfall: https://hobolink.licor.cloud/dashboards/cb8ab403-6a83-4e60-bb49-dffc19d8ce5c/true

September 6, 2024, Issued by OHA: 
https://content.govdelivery.com/accounts/ORHA/bulletins/3b38f01