Tenr Lake
Marshall County, AlabamaView mapDirections
Nutrients and algae sit mid-range for this region.
↓ down from B at the last regrade
- Eutrophic
- #1 of 1 in the county
- Public access
- Limited data
Tenr Lake in Marshall County, Alabama has a water quality grade of C (Fair). Water clarity: 5.1 ft visibility. Phosphorus: 23.5 µg/L. Chlorophyll-a (algae): 12.9 µg/L.
- Clarity
- 5.1 ft
- Type
- Eutrophic
- Phosphorus
- 23.5 µg/L
- Chlorophyll-a
- 12.9 µg/L
- Public access
- Yes
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Tenr Lake is a productive, nutrient-rich eutrophic lake in Marshall County, Alabama. Water quality is graded C based on 2 sampling years through 2025. Limited fish-species data available. Public access is available with 2 public boat landings.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2025-10-15. Grade methodology: LakeQuality methodology.
What Tenr Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch2 documented ramps
Swimming Safety
Grade onlyLimited data
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: C (Fair)
Murky, only visible to about 5.1 ft. Phosphorus 23.5 µg/L. Chlorophyll-a 12.9 µg/L. TSI 53. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.1 ft | Not graded |
| Phosphorus | 23.5 µg/L | Fair |
| Chlorophyll-a (Algae) | 12.9 µg/L | Fair |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Recreation & Access
- Brown's CreekPublic
- Honeycomb CreekPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Tenr Lake
County Ranking
Ranked #1 of 1 lakes in Marshall County
Nearby Lakes in Marshall County
Frequently asked questions about Tenr Lake
Where is Tenr Lake?
- Tenr Lake is a lake in Marshall County, Alabama. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Tenr Lake?
- Tenr Lake in Marshall County, Alabama has a water quality grade of C (Fair). Water clarity: 5.1 ft visibility. Phosphorus: 23.5 µg/L. Chlorophyll-a (algae): 12.9 µg/L.
Is Tenr Lake safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Tenr Lake?
- Tenr Lake has 2 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Brown's Creek, Honeycomb Creek. Public access is listed as yes.
Explore Tenr Lake across LakeQuality
More Alabama Lake Rankings
Other Grade C Lakes in Alabama
Where this data comes from
27 measurements from 1 monitoring station, 2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC27 samples · 2025
Analytical methods
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Named boat-access points from the USGS National Boat Ramps inventory