Lasalle Lake

Lasalle Lake comes in at a B on the grading rubric — a respectable showing for a Minnesota lake of its size and depth. The lake's weakest score is on Secchi depth — the water looks more turbid than its phosphorus number alone would predict.

Mesotrophic conditions dominate at Lasalle Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. Lasalle Lake is unusually deep for Minnesota at 213 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. Lasalle Lake covers 238 acres alongside 3.7 miles of shoreline — a mid-sized water that supports a working fishery without being so large that conditions diverge between basins. Lasalle Lake ranks 61 of 77 in Hubbard County — at the lower end of the locally monitored distribution.

Lasalle Lake has no invasive species recorded in Minnesota state databases as of 2024, though prevention practices still apply at all access points. Walleye are documented at Lasalle Lake, one of 15 fish species on record for the lake. A documented public access point at Lasalle Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. Ice-out has been recorded 14 times at Lasalle Lake, with a median around Apr 20. 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.