Kansas
Toxic algae in Pottawatomie County lakes
3 lakes and waterways in Pottawatomie County have harmful algal bloom reports in Kansas's official data. The most recent entry is for Jeffrey Energy Center North Lake: Kansas has no current advisory for Jeffrey Energy Center North Lake. The most recent sample, on 5 October 2026, was below advisory levels (microcystin 0.24 µg/L, 3,375 cyanobacteria cells/mL). Jeffrey Energy Center North Lake and River Park Pond have had blooms in three or more years.
Lakes with bloom history
Newest report first. Each lake has its own page with the full history and what the results mean.
Source: Kansas Department of Health and Environment (KDHE), official data, checked 24 October 2026. For today's conditions see the KDHE algae bloom map. No report doesn't mean a lake is safe: most water is only tested occasionally.