Tenr Lake
Lauderdale County, Alabama3,220 acresView mapDirections
Nutrients and algae run above the regional average.
↓ down from C at the last regrade
- Eutrophic
- #2 of 2 in the county
- Public access
Tenr Lake in Lauderdale County, Alabama has a water quality grade of D (Nutrient-rich). Water clarity: 4.2 ft visibility. Phosphorus: 47 µg/L. Chlorophyll-a (algae): 9.3 µg/L. Surface area: 3220 acres.
- Clarity
- 4.2 ft
- Area
- 3,220 acres
- Type
- Eutrophic
- Phosphorus
- 47 µg/L
- Chlorophyll-a
- 9.3 µg/L
- Public access
- Yes
Stays via Stay22
Stays near Tenr Lake
Compare lakeside cabins, hotels, and vacation rentals near Tenr Lake in Lauderdale 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. The water-quality grade measures nutrients and algae, not lodging — cabins and rentals around Tenr Lake are listed below.
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 3,220-acre productive, nutrient-rich eutrophic lake in Lauderdale County, Alabama. Water quality is graded D based on 2 sampling years through 2026. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 1 other monitored lakes in Lauderdale County, Tenr Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2026-04-22. Grade methodology: LakeQuality methodology.
What Tenr Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Big water3,220 acres
Swimming Safety
Grade onlyElevated nutrients
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 D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
Murky, only visible to about 4.2 ft. Phosphorus 47 µg/L. Chlorophyll-a 9.3 µg/L. TSI 56. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.2 ft | Not graded |
| Phosphorus | 47 µg/L | Poor |
| Chlorophyll-a (Algae) | 9.3 µg/L | Fair |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 3,220 acres |
| Public Access | Yes |
No bathymetric survey has been published for Tenr Lake, so its depth is not documented here.
Recreation & Access
- Second CreekPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Tenr Lake
Reservoir Info (USACE NID)
Tenr Lake is a man-made reservoir impounded by the Wheeler Dam (completed 1936), built primarily for hydroelectric on the Tennessee River; concrete-type dam, 175 ft tall and 1,000 ft long.
- Surface area
- 3,220 ac
- Normal storage
- 182,436 ac-ft
- Max storage
- 228,045 ac-ft
- Drainage area
- 232 sq mi
- Hazard class
- High
- Owner
- TVA
All listed purposes: Hydroelectric;Navigation;Recreation.
Source: USACE National Inventory of Dams, NID ID AL07701 · Operator website · Matched by proximity (0.92 km)
County Ranking
Ranked #2 of 2 lakes in Lauderdale County
Nearby Lakes in Lauderdale County
Frequently asked questions about Tenr Lake
Where is Tenr Lake?
- Tenr Lake is a lake in Lauderdale County, Alabama. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Tenr Lake?
- Tenr Lake in Lauderdale County, Alabama has a water quality grade of D (Nutrient-rich). Water clarity: 4.2 ft visibility. Phosphorus: 47 µg/L. Chlorophyll-a (algae): 9.3 µg/L. Surface area: 3220 acres.
Is Tenr Lake safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
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 Second Creek. Public access is listed as yes.
Explore Tenr Lake across LakeQuality
More Alabama Lake Rankings
Other Grade D Lakes in Alabama
Where this data comes from
86 measurements from 3 monitoring stations, 2018–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC86 samples · 2018–2026
Analytical methods
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
Monitoring station identifiers (3)
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