Tenr Lake is a productive, nutrient-rich eutrophic lake in Lauderdale County, Alabama. Water quality is graded C based on 2 sampling years through 2026. Compared to the 2 other monitored lakes in Lauderdale County, Tenr Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Alabama DNR, last sampled 2026-04-22. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 4.2 ft. Phosphorus level: 47 µg/L. Chlorophyll-a: 11.2 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.2 ft | D |
| Phosphorus | 47 µg/L | C |
| Chlorophyll-a (Algae) | 11.2 µg/L | C |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Tenr Lake
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Fishing Tenr Lake
Location
County Ranking
Ranked #3 of 3 lakes in Lauderdale County
Cleaner Lakes Within 30 Miles
Tenr Lake holds Grade C. 2 nearby lakes hold higher grades.
- ASinl LakeLawrence County · 17.7 mi · Two grade letters higher (C → A)
- BTenr LakeLauderdale County · 14.6 mi · Higher grade (C → B)
Nearby Lakes in Lauderdale County
Explore Tenr 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: 2026-04-22
Monitoring stations: 3