Tenr Lake
Limestone County, AlabamaView mapDirections
Nutrients and algae sit mid-range for this region.
↓ down from B at the last regrade
- Mesotrophic
- #1 of 1 in the county
- 63 ft max depth
- Public access
Tenr Lake in Limestone County, Alabama has a water quality grade of C (Fair). Water clarity: 6.5 ft visibility. Phosphorus: 29 µg/L. Chlorophyll-a (algae): 6.1 µg/L.
- Clarity
- 6.5 ft
- Max depth
- ~63 ft est.
- Type
- Mesotrophic
- Phosphorus
- 29 µg/L
- Chlorophyll-a
- 6.1 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
Stays via Stay22
Stays near Tenr Lake
Compare lakeside cabins, hotels, and vacation rentals near Tenr Lake in Limestone County, Alabama — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Tenr Lake
Prices for Sep 11–13, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip? Cabins and lodging at Tenr Lake → · more Alabama lake trips
Watch Tenr Lake’s letter
Email me if this lake’s grade moves. Grades stay free.
Or email
Tenr Lake is a mesotrophic lake in Limestone County, Alabama with an estimated average depth of about 63 feet. Water quality is graded C based on 2 sampling years through 2024. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2024-10-16. Grade methodology: LakeQuality methodology.
What Tenr Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming Safety
Grade onlyModerate
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 6.5 ft. Phosphorus 29 µg/L. Chlorophyll-a 6.1 µg/L. TSI 50. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.5 ft | Not graded |
| Phosphorus | 29 µg/L | Fair |
| Chlorophyll-a (Algae) | 6.1 µg/L | Fair |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~63 ft est. |
| Average Depth | ~11 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Alabama has not published bathymetry for Tenr Lake.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Recreation & Access
- Flint Creek 67Public
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Tenr Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.077 m/yr | 5 |
| Phosphorus | ↓ Declining | +0.7 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +0.62 µg/L/yr | 5 |
County Ranking
Ranked #1 of 1 lakes in Limestone County
Nearby Lakes in Limestone County
Frequently asked questions about Tenr Lake
Where is Tenr Lake?
- Tenr Lake is a lake in Limestone 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 Limestone County, Alabama has a water quality grade of C (Fair). Water clarity: 6.5 ft visibility. Phosphorus: 29 µg/L. Chlorophyll-a (algae): 6.1 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.
How deep is Tenr Lake?
- No published bathymetric survey covers Tenr Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 63 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Tenr Lake?
- Tenr Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Flint Creek 67. Public access is listed as yes.
Explore Tenr Lake across LakeQuality
More Alabama Lake Rankings
Other Grade C Lakes in Alabama
Mesotrophic Lakes in Alabama
Where this data comes from
123 measurements from 1 monitoring station, 2013–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC123 samples · 2013–2024
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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory