Domeier Lake
Brown County, MinnesotaHypereutrophic
Domeier Lake grades an F: every scored parameter (clarity and phosphorus) rates poorly, placing it among the most stressed lakes monitored in Minnesota. The two scored sub-grades — clarity and phosphorus — track close together, so neither one is dragging the average down.
Hypereutrophic conditions mean the lake is operating at the upper end of the productivity scale, with all the bloom risk that implies. 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. Domeier Lake ranks 6 of 7 in Brown County — at the lower end of the locally monitored distribution.
No invasive species are currently listed at Domeier Lake — the lake remains off the Minnesota infested-waters roster. The state fisheries records do not list documented species for Domeier Lake, which usually reflects a lack of formal fisheries survey work rather than an empty lake. The lake lacks a documented public access point, so visitor use is limited. The grade is based on limited monitoring — fewer than three independent measurement years contribute, so future updates may shift the letter.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2023-07-31. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 1 ft of visibility. Phosphorus level: 246 µg/L. Trophic State Index: 80.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 1 ft | F |
| Phosphorus | 246 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 80 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | 0 m/yr | 2 |
| Phosphorus | ↑ Improving | -402 µg/L/yr | 2 |
Location
County Ranking
Ranked #6 of 7 lakes in Brown County
Cleaner Lakes Within 30 Miles
Domeier Lake holds Grade F. 3 nearby lakes hold higher grades.
- DFedji LakeWatonwan County · mi · Higher grade (F → D)
- DSt. James LakeWatonwan County · mi · Higher grade (F → D)
- DSleepy Eye LakeBrown County · mi · Higher grade (F → D)
Nearby Lakes in Brown County
More Minnesota Lake Rankings
State Parks Near Domeier Lake
Other Grade F Lakes in Minnesota
EPA Impairment Status
Domeier Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit MN08-0011-00 · Official waterbody report · Matched by proximity (2.56 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-07-31
Monitoring stations: 1