Hattie Lake

Hattie Lake carries a solid B grade — strong on most parameters, with measurements that hold up well across the summer season. Secchi readings are the weakest of the three parameters, suggesting suspended sediment or algal biomass dominates the optical signal.

Mesotrophic conditions dominate at Hattie Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. Hattie Lake reaches 30 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake's 588 acres and 8.5 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Hattie Lake sits at rank 96 of 133 in Cass County, in the lower half of the local distribution.

No invasive species are currently listed at Hattie Lake — the lake remains off the Minnesota infested-waters roster. Walleye are documented at Hattie Lake, one of 14 fish species on record for the lake. No formal public access is documented at Hattie Lake — most use is by shoreline residents and their guests. 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.