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LakeQuality
A

Low: Mpca Co-Located Site Lake

Lake of the Woods County, MinnesotaMesotrophic

Low: Mpca Co-Located Site Lake earns an A — water clarity, phosphorus, and chlorophyll-a all rate among the best monitored waters in Lake of the Woods County. The three sub-grades — clarity, phosphorus, and chlorophyll-a — track close together, so no single parameter is dragging the average.

Mesotrophic conditions dominate at Low: Mpca Co-Located Site Lake: enough nutrients for a healthy fishery, not so much that algal blooms become a chronic problem. The lake's maximum depth is not yet documented in state morphometric records — context for its physical structure remains limited. The lake's surface area is not consistently recorded across state datasets — physical context remains partial. Among the 11 graded lakes in Lake of the Woods County, Low: Mpca Co-Located Site Lake sits at rank 4, above the county median.

Zebra mussels have been documented at Low: Mpca Co-Located Site Lake, which alters the filter-feeding balance and can paradoxically increase water clarity while disrupting the food web. The state fisheries records do not list documented species for Low: Mpca Co-Located Site Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. Public access is available — the lake is on the Minnesota PCA public-access list. 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.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-10-24. Grade methodology: LakeGrade methodology.

Swimming Safety

Excellent for swimming, crystal clear water with minimal algae

Water Quality Grade: A, Excellent

Crystal clear, you can see 18 ft down. Phosphorus level: 27 µg/L. Trophic State Index: 44.

MetricValueGrade
Water Clarity (Secchi Depth)18 ftA
Phosphorus27 µg/LB
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)44Mesotrophic

Moderate nutrients, good water quality

Invasive Species

spiny waterfleazebra mussel

Water Quality Trend: Stable

Based on 3 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Improving+1.975 m/yr3
Phosphorus Declining+2 µg/L/yr3

Ice Season

Historical ice data from Minnesota DNR (6 observations).

Typical Ice-Out
May 5
EarliestLatest
Ice-Out1976-04-26 (1976)1996-05-19 (1996)
Ice-In1986-11-11 (1986)1988-11-17 (1988)

Most recent ice-out: 1997-05-06

Location

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County Ranking

Ranked #4 of 11 lakes in Lake of the Woods County

Nearby Lakes in Lake of the Woods County

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Low: Mpca Co-Located Site Lake. 1 report on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Ice data from Minnesota DNR Climate

Most recent sample: 2024-10-24

Monitoring stations: 1