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LakeQuality
C

Bald Lake

Dakota County, MinnesotaEutrophic

The LakeGrade rubric puts Bald Lake at a C: clarity at 4.9 ft, 44 µg/L of phosphorus, and a TSI of 56 signal an intermediate trophic state. Clarity, phosphorus, and chlorophyll-a all rate similarly, so there is no obvious single lever to pull on watershed management.

Eutrophic conditions are the baseline here: clarity drops noticeably in late summer, and dissolved oxygen near the bottom can become a concern. 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 36 graded lakes in Dakota County, Bald Lake sits at rank 18, above the county median.

No invasive species are currently listed at Bald Lake — the lake remains off the Minnesota infested-waters roster. The fishery is bass-led, with 3 documented species across the lake's records. No formal public access is documented at Bald 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.

Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2024-09-24. Grade methodology: LakeGrade methodology.

Swimming Safety

Generally safe for swimming, moderate water quality

Water Quality Grade: C, Fair

Murky, only visible to about 4.9 ft. Phosphorus level: 44 µg/L. Trophic State Index: 56.

MetricValueGrade
Water Clarity (Secchi Depth)4.9 ftD
Phosphorus44 µg/LC
Chlorophyll-a (Algae)No data
Trophic State Index (TSI)56Eutrophic

High nutrients, frequent algae, reduced clarity

Fish Species

Click a species to see all Minnesota and Wisconsin lakes where it is found.

→ Best fishing times for Bald Lake (14-day solunar calendar)

→ Is it safe to eat fish from Bald Lake? (mercury & PFAS guide)

Bald Lake fishing regulations (limits, seasons, special rules)

Water Quality Trend: Declining

Based on 5 years of monitoring data (2020-2025).

MetricTrendChange/YearYears
Water Clarity Stable-0.02 m/yr5
Phosphorus Declining+6.6 µg/L/yr5

Location

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County Ranking

Ranked #18 of 36 lakes in Dakota County

Nearby Lakes in Dakota County

DNR Reports & Resources

Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Bald Lake. 1 report on file.

Data Sources

Water quality data from the EPA Water Quality Portal

Grading methodology based on Metropolitan Council standards

Most recent sample: 2024-09-24

Monitoring stations: 1