Cumberland River Lake is a productive, nutrient-rich eutrophic lake in Stewart County, Tennessee. Water quality is graded D based on 1 sampling years through 2026. Compared to the 3 other monitored lakes in Stewart County, Cumberland River Lake ranks #4 for water quality.
Source: EPA Water Quality Portal sampling records, Tennessee DNR, last sampled 2026-06-02. 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: 92.2 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 92.2 µg/L | D |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Cumberland River Lake
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Fishing Cumberland River Lake
Location
County Ranking
Ranked #4 of 4 lakes in Stewart County
Cleaner Lakes Within 30 Miles
Cumberland River Lake holds Grade D. 2 nearby lakes hold higher grades.
Nearby Lakes in Stewart County
Explore Cumberland River Lake across LakeGrade
More Tennessee Lake Rankings
Other Grade D Lakes in Tennessee
Eutrophic Lakes in Tennessee
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: 2026-06-02
Monitoring stations: 1