Felsenthal Lake is a productive, nutrient-rich eutrophic lake in Ashley County, Arkansas. Water quality is graded B based on 2 sampling years through 2023. Compared to the 3 other monitored lakes in Ashley County, Felsenthal Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Arkansas DNR, last sampled 2023-05-16. 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: 60 µg/L. Chlorophyll-a: 4.9 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 60 µg/L | D |
| Chlorophyll-a (Algae) | 4.9 µg/L | A |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Felsenthal Lake
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Location
County Ranking
Ranked #1 of 4 lakes in Ashley County
Nearby Lakes in Ashley County
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More Arkansas Lake Rankings
Other Grade B Lakes in Arkansas
Eutrophic Lakes in Arkansas
More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-05-16
Monitoring stations: 1