White Earth Lake

On the LakeGrade rubric, White Earth Lake pulls an A: clarity at 14.5 ft and 7 µg/L of phosphorus put it in the top bracket for Minnesota. With clarity and phosphorus scored, the sub-grades cluster within a letter of each other, pointing to stable conditions rather than one specific stressor.

The lake's low TSI puts it in oligotrophic territory — the cleanest of the four trophic classes, but also the most vulnerable to nutrient-driven shifts. At 120 ft of maximum depth, White Earth Lake stratifies reliably through the summer — the hypolimnion stays cooler and clearer than the surface layer suggests. With 1,989 acres of surface and 13.7 miles of shoreline, White Earth Lake is a large water by Minnesota standards — recreational pressure is spread across a long shoreline. Among the 93 graded lakes in Becker County, White Earth Lake ranks 23 — in the top quartile locally.

Zebra mussels have been documented at White Earth Lake, which alters the filter-feeding balance and can paradoxically increase water clarity while disrupting the food web. Walleye are documented at White Earth Lake, one of 17 fish species on record for the lake. A documented public access point at White Earth Lake makes the lake usable for shore fishing, paddle craft, and trailered boats. The lake has a partial ice record — 16 observed ice-outs, centered near Apr 21. 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.