Des Arc Lake is a productive, nutrient-rich eutrophic lake in Prairie County, Arkansas. Water quality is graded C based on 2 sampling years through 2025.
Source: EPA Water Quality Portal sampling records, Arkansas DNR, last sampled 2025-11-19. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C, Fair
No clarity data. Phosphorus level: 40 µg/L. Chlorophyll-a: 26.4 µg/L. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 40 µg/L | C |
| Chlorophyll-a (Algae) | 26.4 µg/L | D |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Des Arc Lake
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Fishing Des Arc Lake
Location
County Ranking
Ranked #1 of 1 lakes in Prairie County
Cleaner Lakes Within 30 Miles
Des Arc Lake holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Prairie County
Explore Des Arc Lake across LakeGrade
More Arkansas Lake Rankings
Other Grade C Lakes in Arkansas
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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: 2025-11-19
Monitoring stations: 1