Cahc Lake
Cleburne County, Alabama84 acresView mapDirections
Nutrients and algae sit mid-range for this region.
↓ down from B at the last regrade
- Mesotrophic
- #1 of 1 in the county
- 25 ft max depth
- Limited data
Cahc Lake in Cleburne County, Alabama has a water quality grade of C (Fair). Water clarity: 6.3 ft visibility. Phosphorus: 17 µg/L. Chlorophyll-a (algae): 6.4 µg/L. Surface area: 84 acres.
- Clarity
- 6.3 ft
- Max depth
- ~25 ft est.
- Area
- 84 acres
- Type
- Mesotrophic
- Phosphorus
- 17 µg/L
- Chlorophyll-a
- 6.4 µg/L
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Watch Cahc Lake’s letter
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Cahc Lake is a 84-acre mesotrophic lake in Cleburne County, Alabama with an estimated average depth of about 25 feet. Water quality is graded C based on 2 sampling years through 2023.
Source: EPA Water Quality Portal sampling records, ADEM, last sampled 2023-10-25. Grade methodology: LakeQuality methodology.
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 6.3 ft. Phosphorus 17 µg/L. Chlorophyll-a 6.4 µg/L. TSI 48. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.3 ft | Not graded |
| Phosphorus | 17 µg/L | Good |
| Chlorophyll-a (Algae) | 6.4 µg/L | Fair |
| Trophic State Index (TSI) | 48 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~25 ft est. |
| Average Depth | ~17 ft est. |
| Surface Area | 84 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Alabama has not published bathymetry for Cahc 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.
Fishing Cahc Lake
Reservoir Info (USACE NID)
Cahc Lake is a man-made reservoir impounded by the Cahulga Creek W/S Dam Site 1 (completed 1972), built primarily for flood risk reduction on the Cahulga Creek; earth-type dam, 46 ft tall and 775 ft long.
- Surface area
- 84 ac
- Normal storage
- 637 ac-ft
- Max storage
- 3,940 ac-ft
- Drainage area
- 6.54 sq mi
- Hazard class
- High
- Owner
- HEFLIN AL CITY OF
All listed purposes: Flood Risk Reduction;Water Supply.
Source: USACE National Inventory of Dams, NID ID AL00616 · Operator website · Matched by proximity (0.29 km)
County Ranking
Ranked #1 of 1 lakes in Cleburne County
Nearby Lakes in Cleburne County
Frequently asked questions about Cahc Lake
Where is Cahc Lake?
- Cahc Lake is a lake in Cleburne County, Alabama. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Cahc Lake?
- Cahc Lake in Cleburne County, Alabama has a water quality grade of C (Fair). Water clarity: 6.3 ft visibility. Phosphorus: 17 µg/L. Chlorophyll-a (algae): 6.4 µg/L. Surface area: 84 acres.
Is Cahc Lake safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Cahc Lake?
- No published bathymetric survey covers Cahc Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 25 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 84 acres.
Explore Cahc Lake across LakeQuality
More Alabama Lake Rankings
Other Grade C Lakes in Alabama
Mesotrophic Lakes in Alabama
Where this data comes from
32 measurements from 1 monitoring station, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- ALABAMA DEPT. OF ENVIRONMENTAL MANAGEMENT - WATER QUALITY DATA
21AWIC32 samples · 2023
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)