Lake Isaac Walton
Person County, North Carolina224 acresView mapDirections
NC DEQ publishes the water-quality measurements for Lake Isaac Walton. Here is what has been measured.
- Eutrophic
- 48 ft max depth
- Limited data
Lake Isaac Walton in Person County, North Carolina has water-quality measurements published by NC DEQ, shown here as reported. Water clarity: 3.4 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 26 µg/L. Surface area: 224 acres.
Lake Isaac Walton is a 224-acre productive, nutrient-rich eutrophic lake in Person County, North Carolina with an estimated average depth of about 48 feet. Compared to the 2 other monitored lakes in Person County, Lake Isaac Walton ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, NCDEQ, last sampled 2024-10-23. Methodology: how these readings are compared.
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 Lake Isaac Walton 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 Lake Isaac Walton
These are the measurements NC DEQ publishes for Lake Isaac Walton, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Murky, only visible to about 3.4 ft. Phosphorus 30 µg/L. Chlorophyll-a 26 µg/L. TSI 58.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 3.4ft | 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) | 26µg/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. | 58 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Lake Isaac Walton
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~48 ft est.
Surface area
224 acres
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 Lake Isaac Walton.
Lake Size & Watershed
Watershed (drainage) area
11 sq mi
HydroLAKES / HydroSHEDS
Shoreline
3.1 mi
HydroLAKES / HydroSHEDS
Elevation
489 ft
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.
Stays via Stay22
Stays near Lake Isaac Walton
Compare lakeside cabins, hotels, and vacation rentals near Lake Isaac Walton in Person 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 Lake Isaac Walton are listed below.
Top-rated places to stay near Lake Isaac Walton
Prices for Oct 23–25, 4 adults. Change dates on the map below.
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Fishing Lake Isaac Walton
Reservoir Info (USACE NID)
Lake Isaac Walton is a man-made reservoir impounded by the Roxboro Municipal Lake Dam (completed 1955), built primarily for recreation on the Storys Creek; earth-type dam, 33 ft tall and 1,000 ft long.
- Surface area
- 224 ac
- Normal storage
- 2,450 ac-ft
- Max storage
- 4,125 ac-ft
- Drainage area
- 10.11 sq mi
- Hazard class
- High
- Owner
- City of Roxboro
All listed purposes: Recreation;Water Supply.
Source: USACE National Inventory of Dams, NID ID NC00658 · Operator website · Matched by proximity (0.78 km)
Nearby Lakes in Person County
Frequently asked questions about Lake Isaac Walton
Where is Lake Isaac Walton?
- Lake Isaac Walton is a lake in Person 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 Lake Isaac Walton?
- Lake Isaac Walton in Person County, North Carolina has water-quality measurements published by NC DEQ, shown here as reported. Water clarity: 3.4 ft visibility. Phosphorus: 30 µg/L. Chlorophyll-a (algae): 26 µg/L. Surface area: 224 acres.
Is Lake Isaac Walton safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Lake Isaac Walton?
- No published bathymetric survey covers Lake Isaac Walton, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 48 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 224 acres.
Explore Lake Isaac Walton across LakeQuality
5.3 mi away · cable-pulled, no boat wake
Species activity outlook by water temperature and season
Where to stay at North Carolina's top lakes, each with its readings
North Carolina's cleanest lakes, ranked on agency measurements
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Where this data comes from
60 measurements from 3 monitoring stations, 2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North Carolina Dept of Environmental Quality NCDEQ-DWR WQX
21NC03WQ60 samples · 2024
Analytical methods
- WSSSOP
- Phosphorus by Colorimetry
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (3)
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.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)