Cofc Lake
Choctaw County, Alabama8,500 acresView mapDirections
Clarity, phosphorus, and algae sit in the clean band for this region.
↑ up from C at the last regrade
- Eutrophic
- #1 of 2 in the county
- Public access
Cofc Lake in Choctaw County, Alabama has a water quality grade of B (Good). Water clarity: 2.4 ft visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 10.7 µg/L. Surface area: 8500 acres.
- Clarity
- 2.4 ft
- Area
- 8,500 acres
- Type
- Eutrophic
- Phosphorus
- 36 µg/L
- Chlorophyll-a
- 10.7 µg/L
- Trend
- ↓ Declining
- Public access
- Yes
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Watch Cofc Lake’s letter
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Cofc Lake is a 8,500-acre productive, nutrient-rich eutrophic lake in Choctaw County, Alabama. Water quality is graded B based on 1 sampling years through 2025. Overall water quality is declining over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 1 other monitored lakes in Choctaw County, Cofc Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2025-10-28. Grade methodology: LakeQuality methodology.
What Cofc Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
- Big water8,500 acres
Swimming Safety
Grade onlyLow algae
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 B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: B (Good)
Very murky, less than 2.4 ft of visibility. Phosphorus 36 µg/L. Chlorophyll-a 10.7 µg/L. TSI 58. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.4 ft | Not graded |
| Phosphorus | 36 µg/L | Not graded |
| Chlorophyll-a (Algae) | 10.7 µg/L | Good |
| Trophic State Index (TSI) | 58 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 8,500 acres |
| Public Access | Yes |
No bathymetric survey has been published for Cofc Lake, so its depth is not documented here.
Recreation & Access
- Service ParkPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Cofc Lake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.031 m/yr | 5 |
| Phosphorus | ↓ Declining | +1.26 µg/L/yr | 5 |
| Chlorophyll-a | ↓ Declining | +0.48 µg/L/yr | 5 |
Reservoir Info (USACE NID)
Cofc Lake is a man-made reservoir impounded by the Coffeeville Lock and Dam (completed 1962), built primarily for navigation on the Tombigbee River; gravity-type dam, 60 ft tall and 1,439 ft long.
- Surface area
- 8,500 ac
- Normal storage
- 190,800 ac-ft
- Max storage
- 190,800 ac-ft
- Drainage area
- 18,417 sq mi
- Hazard class
- Significant
- Owner
- USACE - Mobile District
All listed purposes: Navigation;Recreation.
Source: USACE National Inventory of Dams, NID ID AL01431 · Operator website · Matched by proximity (0.64 km)
County Ranking
Ranked #1 of 2 lakes in Choctaw County
Nearby Lakes in Choctaw County
Frequently asked questions about Cofc Lake
Where is Cofc Lake?
- Cofc Lake is a lake in Choctaw County, Alabama. LakeQuality grades it B for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Cofc Lake?
- Cofc Lake in Choctaw County, Alabama has a water quality grade of B (Good). Water clarity: 2.4 ft visibility. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 10.7 µg/L. Surface area: 8500 acres.
Is Cofc Lake safe to swim in?
- The B is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Are there boat ramps on Cofc Lake?
- Cofc Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Service Park. Public access is listed as yes.
Explore Cofc Lake across LakeQuality
More Alabama Lake Rankings
Other Grade B Lakes in Alabama
Where this data comes from
135 measurements from 1 monitoring station, 2014–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC135 samples · 2014–2025
Analytical methods
- Phosphorus by Colorimetry
- 10200 H ~ Chlorophyll a-b-c Determination
- 2120 B ~ Color in Water by Visual Comparison
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