Defiance County, Ohio · Water Quality Report Card
Maumee R Upst Independence Dam Lake
Maumee R Upst Independence Dam Lake in Defiance County, Ohio has a water quality grade of D (Poor). Phosphorus: 197.5 µg/L. Chlorophyll-a (algae): 51.3 µg/L.
- Type
- Hypereutrophic
Maumee R Upst Independence Dam Lake is a highly nutrient-loaded hypereutrophic lake in Defiance County, Ohio. Water quality is graded D based on 1 sampling years through 2024. Compared to the 1 other monitored lakes in Defiance County, Maumee R Upst Independence Dam Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Ohio EPA, last sampled 2024-12-12. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D (Poor)
No clarity data. Phosphorus level: 197.5 µg/L. Chlorophyll-a: 51.3 µg/L. Trophic State Index: 75.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 197.5 µg/L | Poor |
| Chlorophyll-a (Algae) | 51.3 µg/L | |
| Trophic State Index (TSI) | 75 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Maumee R Upst Independence Dam Lake
Location
County Ranking
Ranked #2 of 2 lakes in Defiance County
Nearby Lakes in Defiance County
Explore Maumee R Upst Independence Dam Lake across LakeGrade
More Ohio Lake Rankings
Other Grade D Lakes in Ohio
Hypereutrophic Lakes in Ohio
More records, surveys & data sources
Where this data comes from
15 measurements from 1 monitoring station, 2020–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Division of Surface water (Ohio)
21OHIO_WQX15 samples · 2020–2024
Analytical methods
- Total Phosphorus After Block Digestion
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
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
Most recent sample: 2024-12-12
Monitoring stations: 1