Kansas
Toxic algae in Douglas County lakes
5 lakes and waterways in Douglas County have harmful algal bloom reports in Kansas's official data. The most recent entry is for Lone Star Lake: Kansas has a public health watch in effect for Lone Star Lake, last updated on 16 October 2026. The latest published sample, on 12 October 2026, was below advisory levels (microcystin 0.42 µg/L).
Lakes with bloom history
Newest report first. Each lake has its own page with the full history and what the results mean.
Other waterbodies with a report
These have one or two reports in a single year, which isn't enough history for a page of their own yet.
- Douglas County State Lake 2017
- West Campus Lake Ku 2018
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.