Kansas

Toxic algae in Nemaha County lakes

3 lakes and waterways in Nemaha County have harmful algal bloom reports in Kansas's official data. The most recent entry is for Sabetha City Lake: Kansas has no current advisory for Sabetha City Lake. The most recent sample, on 15 July 2026, was below advisory levels (microcystin not detected, 31,848 cyanobacteria cells/mL).

Lakes with bloom history

Newest report first. Each lake has its own page with the full history and what the results mean.

Sabetha City Lake Latest 15 July 2026, blooms in 2 years No current advisory
Nemaha County State Fishing Lake Latest 26 October 2015, blooms in 1 year No current advisory
Centralia Lake Latest 8 October 2012, blooms in 2 years No current advisory

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.