Rossman Lake

Rossman Lake earns a C — middle-of-the-pack water quality, with one or two parameters dragging the average down from a stronger grade.

A TSI near 48 places Rossman Lake in the mesotrophic band — moderate productivity, with seasonal swings between clearer spring water and richer late-summer conditions. Rossman Lake reaches 20 ft at its deepest point — typical for Minnesota mid-sized lakes, with seasonal stratification but limited cold-water refuge. The lake's 273 acres and 5.8 miles of shoreline put it in the mid-range bucket — large enough for varied use, small enough that watershed inputs reach the whole basin. Rossman Lake sits at rank 65 of 93 in Becker County, in the lower half of the local distribution.

No invasive species are currently listed at Rossman Lake — the lake remains off the Minnesota infested-waters roster. The fishery is bass-led, with 12 documented species across the lake's records. The lake lacks a documented public access point, so visitor use is limited. Ice-out has been recorded 10 times at Rossman Lake, with a median around Apr 26. 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.