Lake Wilson
Ashley County, ArkansasView mapDirections
Nutrients and algae run well above the regional average.
- Hypereutrophic
- #3 of 3 in the county
- 27 ft max depth
- Limited data
Lake Wilson in Ashley County, Arkansas has a water quality grade of F (Algae-prone). Phosphorus: 200 µg/L. Chlorophyll-a (algae): 47.9 µg/L.
- Max depth
- ~27 ft est.
- Type
- Hypereutrophic
- Phosphorus
- 200 µg/L
- Chlorophyll-a
- 47.9 µg/L
- Trend
- ↑ Improving
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Stays near Lake Wilson
Compare lakeside cabins, hotels, and vacation rentals near Lake Wilson in Ashley County, Arkansas — 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 grade measures nutrients and algae, not lodging — cabins and rentals around Lake Wilson are listed below.
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Lake Wilson is a highly nutrient-loaded hypereutrophic lake in Ashley County, Arkansas with an estimated average depth of about 27 feet. Water quality is graded F based on 3 sampling years through 2025. Overall water quality is improving over recent sampling years. Compared to the 2 other monitored lakes in Ashley County, Lake Wilson ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2025-08-26. 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 F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: F (Algae-prone)
No clarity data. Phosphorus 200 µg/L. Chlorophyll-a 47.9 µg/L. TSI 75. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 200 µg/L | Poor |
| Chlorophyll-a (Algae) | 47.9 µg/L | Poor |
| Trophic State Index (TSI) | 75 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~27 ft est. |
| Average Depth | ~4 ft est. |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Arkansas has not published bathymetry for Lake Wilson.
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 Lake Wilson
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -70 µg/L/yr | 2 |
| Chlorophyll-a | ↑ Improving | -64.25 µg/L/yr | 3 |
County Ranking
Ranked #3 of 3 lakes in Ashley County
Nearby Lakes in Ashley County
Frequently asked questions about Lake Wilson
Where is Lake Wilson?
- Lake Wilson is a lake in Ashley County, Arkansas. LakeQuality grades it F for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Lake Wilson?
- Lake Wilson in Ashley County, Arkansas has a water quality grade of F (Algae-prone). Phosphorus: 200 µg/L. Chlorophyll-a (algae): 47.9 µg/L.
Is Lake Wilson safe to swim in?
- The F is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Lake Wilson?
- No published bathymetric survey covers Lake Wilson, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 27 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Explore Lake Wilson across LakeQuality
Species activity outlook by water temperature and season
Where to stay at Arkansas's top lakes, each with its grade
Very high nutrients, dense algae, poor clarity
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Other Grade F Lakes in Arkansas
Hypereutrophic Lakes in Arkansas
Where this data comes from
31 measurements from 1 monitoring station, 2023–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Arkansas Department of Environmental Quality
ARDEQH2O_WQX31 samples · 2023–2025
Analytical methods
- 4500 P J ~ Persulfate Method for Simultaneous Determination of Total Nitrogen and Total Phosphorus
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- Turbidity by Nephelometry
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)