St. Joe Lake

St. Joe Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season.

The lake sits in the mesotrophic zone — the band where most well-managed Minnesota lakes fall. The lake's 52 ft maximum depth is in the upper tier for Minnesota — deep enough for cold-water fish to find refuge in summer. The lake is compact at 20 acres, with 0.9 miles of shoreline and little volume to buffer nutrient inputs. Within Carver County's 40 graded waters, St. Joe Lake sits at rank 8, near the top of the local distribution.

St. Joe Lake has no invasive species recorded in Minnesota state databases as of 2023, though prevention practices still apply at all access points. The fishery is bass-led, with 10 documented species across the lake's records. A documented public access point at St. Joe Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a long ice-out record — 25 observations on file, with a median ice-out around Apr 3. Monitoring depth is thin here: the LakeGrade rubric is applied to a small number of sample years, and the grade will be revised as more data accumulates.