Castle Rock Lake

Despite 2024 Decline, Algae Blooms Still On Long-Term Upward Trend

About 62% of blooms reported so far this year have been dangerous blue-green algae.

DNR Adds 51 Waters to List of Polluted Waterways

But total number of impaired waters in state declining in ongoing efforts against pollution.

EPA Approves Site-Specific Phosphorus Criteria For Multiple Wisconsin Lakes