East Battle Lake

East Battle Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Otter Tail County. Sub-grades cluster within a single letter of each other, which usually means the lake is in stable trophic balance rather than fighting one specific stressor.

Mesotrophic conditions dominate at East Battle Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. East Battle Lake is unusually deep for Minnesota at 87 ft, which buffers the lake against summer warming and helps the deep water stay oxygenated. At 1,978 acres, East Battle Lake is one of the larger lakes in Otter Tail County, with 13.7 miles of shoreline supporting multiple distinct use patterns. Among the 97 graded lakes in Otter Tail County, East Battle Lake sits at rank 37, above the county median.

East Battle Lake is on the Minnesota infested-waters list for zebra mussels — boaters should follow clean-drain-dry protocols when moving gear to or from the lake. Walleye are documented at East Battle Lake, one of 16 fish species on record for the lake. Public access is available — the lake is on the Minnesota PCA public-access list. The lake has a long ice-out record — 38 observations on file, with a median ice-out around Apr 18. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.