Eagle Lake

On the LakeGrade rubric, Eagle Lake pulls an A: clarity at 11.3 ft and 15 µg/L of phosphorus put it in the top bracket for Minnesota. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. The lake's 77 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. At 424 acres, Eagle Lake fits the Minnesota median for monitored lakes, with 5.7 miles of shoreline. Among the 77 graded lakes in Hubbard County, Eagle Lake sits at rank 32, above the county median.

Zebra mussels have been documented at Eagle Lake, which alters the filter-feeding balance and can paradoxically increase water clarity while disrupting the food web. Walleye are documented at Eagle Lake, one of 16 fish species on record for the lake. A documented public access point at Eagle Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a partial ice record — 11 observed ice-outs, centered near Apr 24. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.