Kansas
Toxic algae in Rooks County lakes
3 lakes and waterways in Rooks County have harmful algal bloom reports in Kansas's official data. The most recent entry is for Webster Lake: Kansas has no current advisory for Webster Lake. The most recent sample, on 31 August 2026 at Webster Lake Swim Beach, was below advisory levels (microcystin not detected, 45,791 cyanobacteria cells/mL). Webster Lake and Rooks County State Fishing Lake 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.