Kansas

Toxic algae in Miami County lakes

2 lakes and waterways in Miami County have harmful algal bloom reports in Kansas's official data. The most recent entry is for Hillsdale Lake: Kansas has no current advisory for Hillsdale Lake. The most recent sample, on 7 October 2025 at Hillsdale Point Boat Ramp, was below advisory levels (microcystin not detected).

Lakes with bloom history

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

Hillsdale Lake Latest 7 October 2025, blooms in 0 years No current advisory
Louisburg Old Lake Latest 16 September 2024, 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.