Milwaukee County, Wisconsin · 43.06°N · Water Quality Report Card
Milwaukee River Lake
Milwaukee River Lake in Milwaukee County, Wisconsin is not rated for water quality — its monitoring record does not meet the evidence bar.
- Trend
- ↓ Declining
Milwaukee River Lake is a lake in Milwaukee County, Wisconsin. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, Wisconsin DNR Surface Water, last sampled 2025-12-03. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not rated for swimming — there is not enough monitoring data to judge this lake
Water Quality Grade: Not rated
No clarity data.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data |
Where to stay near Milwaukee River Lake
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Fishing Milwaukee River Lake
Water Quality Trend: ↓ Declining
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.054 m/yr | 6 |
| Phosphorus | → Stable | -0.06 µg/L/yr | 6 |
| Chlorophyll-a | ↓ Declining | +4.08 µg/L/yr | 6 |
Location
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Where this data comes from
98 measurements from 1 monitoring station, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Wisconsin Department of Natural Resources
WIDNR_WQX98 samples · 2020–2025
Monitoring station identifiers (1)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Fish and recreation data from Wisconsin DNR Lakes
Most recent sample: 2025-12-03
Monitoring stations: 1