Crawford County, Ohio · Water Quality Report Card
Powers Reservoir
Powers Reservoir in Crawford County, Ohio has a water quality grade of B (Good). Phosphorus: 35.7 µg/L.
- Type
- Eutrophic
Powers Reservoir is a productive, nutrient-rich eutrophic lake in Crawford County, Ohio. Water quality is graded B based on 1 sampling years through 2024.
Source: EPA Water Quality Portal sampling records, Ohio EPA, last sampled 2024-10-02. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B (Good)
No clarity data. Phosphorus level: 35.7 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 35.7 µg/L | Good |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Powers Reservoir
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Fishing Powers Reservoir
Location
County Ranking
Ranked #1 of 1 lakes in Crawford County
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EPA Impairment Status
Powers Reservoir 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 OH050600010801 · Official waterbody report · Matched by proximity (0.93 km)
Where this data comes from
4 measurements from 1 monitoring station, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Division of Surface water (Ohio)
21OHIO_WQX4 samples · 2024
Analytical methods
- Total Phosphorus After Block Digestion
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
Impairment status from EPA ATTAINS 303(d) database
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2024-10-02
Monitoring stations: 1