Paulding County, Ohio · Water Quality Report Card
Auglaize R Lake
Auglaize R Lake in Paulding County, Ohio has a water quality grade of F (Very Poor). Phosphorus: 130.5 µg/L. Chlorophyll-a (algae): 72.6 µg/L.
- Type
- Hypereutrophic
Auglaize R Lake is a highly nutrient-loaded hypereutrophic lake in Paulding County, Ohio. Water quality is graded F based on 2 sampling years through 2021.
Source: EPA Water Quality Portal sampling records, Ohio EPA, last sampled 2021-09-07. 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)
No clarity data. Phosphorus level: 130.5 µg/L. Chlorophyll-a: 72.6 µg/L. Trophic State Index: 74.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 130.5 µg/L | Poor |
| Chlorophyll-a (Algae) | 72.6 µg/L | Poor |
| Trophic State Index (TSI) | 74 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Auglaize R Lake
Location
County Ranking
Ranked #1 of 1 lakes in Paulding County
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More records, surveys & data sources
EPA Impairment Status
Auglaize R Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit OH041000071005 · Official waterbody report · Matched by proximity (1.92 km)
Where this data comes from
16 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Division of Surface water (Ohio)
21OHIO_WQX16 samples · 2021
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
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: 2021-09-07
Monitoring stations: 1