Blewett Falls Lake
Anson County, North Carolina2,560 acresView mapDirections
Nutrients and algae run above the regional average.
- Eutrophic
- #2 of 2 in the county
- 44 ft max depth
- Public access
- Limited data
Blewett Falls Lake in Anson County, North Carolina has a water quality grade of D (Nutrient-rich). Phosphorus: 85 µg/L. Chlorophyll-a (algae): 27.5 µg/L. Surface area: 2560 acres.
- Max depth
- ~44 ft est.
- Area
- 2,560 acres
- Type
- Eutrophic
- Public access
- Yes
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Blewett Falls Lake is a 2,560-acre productive, nutrient-rich eutrophic lake in Anson County, North Carolina with an estimated average depth of about 44 feet. Water quality is graded D based on 2 sampling years through 2021. Limited fish-species data available. Public access is available with 3 public boat landings. Compared to the 1 other monitored lakes in Anson County, Blewett Falls Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, NCDEQ, last sampled 2021-09-22. Grade methodology: LakeQuality methodology.
What Blewett Falls Lake is good for
From access and monitoring records, not editorial picks.
- Boat launch3 documented ramps
- Big water2,560 acres
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 D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: D (Nutrient-rich)
No clarity data. Phosphorus 85 µg/L. Chlorophyll-a 27.5 µg/L. TSI 66. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 85 µg/L | Poor |
| Chlorophyll-a (Algae) | 27.5 µg/L | Poor |
| Trophic State Index (TSI) | 66 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~44 ft est. |
| Surface Area | 2,560 acres |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. North Carolina has not published bathymetry for Blewett Falls 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
- Blewetts GravePublic
- Pee DeePublic
- RockinghamPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Blewett Falls Lake
Reservoir Info (USACE NID)
Blewett Falls Lake is a man-made reservoir impounded by the Blewett Falls (completed 1912), built primarily for hydroelectric on the Pee Dee; concrete-type dam, 77 ft tall and 4,109 ft long.
- Surface area
- 2,560 ac
- Normal storage
- 97,000 ac-ft
- Max storage
- 97,000 ac-ft
- Drainage area
- 6,830 sq mi
- Hazard class
- High
- Owner
- Duke Energy
All listed purposes: Hydroelectric;Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID NC00494 · Operator website
County Ranking
Ranked #2 of 2 lakes in Anson County
Nearby Lakes in Anson County
Frequently asked questions about Blewett Falls Lake
Where is Blewett Falls Lake?
- Blewett Falls Lake is a lake in Anson County, North Carolina. LakeQuality grades it D for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Blewett Falls Lake?
- Blewett Falls Lake in Anson County, North Carolina has a water quality grade of D (Nutrient-rich). Phosphorus: 85 µg/L. Chlorophyll-a (algae): 27.5 µg/L. Surface area: 2560 acres.
Is Blewett Falls Lake safe to swim in?
- The D is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Blewett Falls Lake?
- No published bathymetric survey covers Blewett Falls Lake, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 44 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 2560 acres.
Are there boat ramps on Blewett Falls Lake?
- Blewett Falls Lake has 3 documented boat landings in the USGS National Boat Ramps inventory. Named access points include Blewetts Grave, Pee Dee, Rockingham. Public access is listed as yes.
Explore Blewett Falls Lake across LakeQuality
Species activity outlook by water temperature and season
Where to stay at North Carolina's top lakes, each with its grade
High nutrients, frequent algae, reduced clarity
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Top 25 by Secchi water clarity
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Panfish-rich, public access
Full state directory
Other Grade D Lakes in North Carolina
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Where this data comes from
15 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North Carolina Dept of Environmental Quality NCDEQ-DWR WQX
21NC03WQ15 samples · 2021
Analytical methods
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- 2130 B ~ Nephelometric Method
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