Tenl Lake is a productive, nutrient-rich eutrophic lake in Baldwin County, Alabama. Water quality is graded C based on 2 sampling years through 2026. Compared to the 1 other monitored lakes in Baldwin County, Tenl Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Alabama DNR, last sampled 2026-04-02. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 2.2 ft of visibility. Phosphorus level: 66 µg/L. Chlorophyll-a: 11 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.2 ft | F |
| Phosphorus | 66 µg/L | D |
| Chlorophyll-a (Algae) | 11 µg/L | C |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Tenl Lake
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Fishing Tenl Lake
Location
County Ranking
Ranked #2 of 2 lakes in Baldwin County
Cleaner Lakes Within 30 Miles
Tenl Lake holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Baldwin County
Explore Tenl Lake across LakeGrade
More Alabama Lake Rankings
Other Grade C Lakes in Alabama
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: 2026-04-02
Monitoring stations: 1