Randleman Lake
Randolph County, North Carolina3,070 acresView mapDirections
NC DEQ publishes the water-quality measurements for Randleman Lake. Here is what has been measured.
- Eutrophic
- Limited data
Randleman Lake in Randolph County, North Carolina has water-quality measurements published by NC DEQ, shown here as reported. Water clarity: 3.2 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 17.5 µg/L. Surface area: 3070 acres.
Randleman Lake is a 3,070-acre productive, nutrient-rich eutrophic lake in Randolph County, North Carolina. Compared to the 4 other monitored lakes in Randolph County, Randleman Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, NCDEQ, last sampled 2023-09-05. Methodology: how these readings are compared.
Randleman Lake covers about 3,100 acres in Randolph County. For a place on the water, look through cabin and lake-house rentals near Randleman Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Randleman Lake is good for
From access and monitoring records, not editorial picks.
- Big water3,070 acres
Swimming conditions
Readings onlyLimited data
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Randleman Lake is safe to swim in today is a call for the North Carolina Department of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Randleman Lake
These are the measurements NC DEQ publishes for Randleman Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 3.2 ft of visibility. Phosphorus 30 µg/L. Chlorophyll-a 17.5 µg/L. TSI 57.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 30µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 17.5µg/L | Poor GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 57 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Randleman Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
3,070 acres
No bathymetric survey has been published for Randleman Lake, so its depth is not documented here.
Stays via Stay22
Stays near Randleman Lake
Compare lakeside cabins, hotels, and vacation rentals near Randleman Lake in Randolph County, North Carolina — 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 readings cover nutrients and algae, not lodging. Cabins and rentals around Randleman Lake are listed below.
Top-rated places to stay near Randleman Lake
Prices for Oct 23–25, 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 whole trip? See where to stay at North Carolina’s top lakes →
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Fishing Randleman Lake
Reservoir Info (USACE NID)
Randleman Lake is a man-made reservoir impounded by the Randleman Dam (completed 2002), built primarily for recreation on the Deep River; earth-type dam, 102 ft tall and 2,895 ft long.
- Surface area
- 3,070 ac
- Normal storage
- 93,600 ac-ft
- Max storage
- 121,200 ac-ft
- Drainage area
- 169 sq mi
- Hazard class
- High
- Owner
- Piedmont Triad Regional Water Authority
All listed purposes: Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID NC05570 · Operator website
Nearby Lakes in Randolph County
Frequently asked questions about Randleman Lake
Where is Randleman Lake?
- Randleman Lake is a lake in Randolph County, North Carolina. Its water-quality measurements are published by NC DEQ and shown on this page as reported.
What is the water quality of Randleman Lake?
- Randleman Lake in Randolph County, North Carolina has water-quality measurements published by NC DEQ, shown here as reported. Water clarity: 3.2 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 17.5 µg/L. Surface area: 3070 acres.
Is Randleman Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Randleman Lake across LakeQuality
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Where this data comes from
181 measurements from 9 monitoring stations, 2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North Carolina Dept of Environmental Quality NCDEQ-DWR WQX
21NC03WQ181 samples · 2023
Analytical methods
- WSSSOP
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (9)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.