Lake Wilson
Washington County, Arkansas190 acresView mapDirections
Arkansas DEQ publishes the water-quality measurements for Lake Wilson. Here is what has been measured.
- Limited data
Lake Wilson in Washington County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Water clarity: 8 ft visibility. Surface area: 190.2 acres.
Lake Wilson is a 190-acre lake in Washington County, Arkansas. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2024-07-04. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lake Wilson is safe to swim in today is a call for the Arkansas Division of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Lake Wilson
These are the measurements Arkansas DEQ publishes for Lake Wilson, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 8 ft. TSI 47.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 8ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 47 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Lake Wilson
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
190 acres
No bathymetric survey has been published for Lake Wilson, so its depth is not documented here.
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Stays near Lake Wilson
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Fishing Lake Wilson
Water Quality Trend: Worsening
Based on 10 years of monitoring (2012–2024).
Water clarity
Worsening5 years
Phosphorus
Worsening+0.49 µg/L/yr6 years
Chlorophyll-a
Worsening+0.62 µg/L/yr7 years
Reservoir Info (USACE NID)
Lake Wilson is a man-made reservoir impounded by the Wilson Lake Dam (completed 1941), built primarily for recreation on the White River-Tr; earth-type dam, 49 ft tall and 640 ft long.
- Surface area
- 190.2 ac
- Normal storage
- 317.5 ac-ft
- Max storage
- 512.2 ac-ft
- Hazard class
- Significant
- Owner
- City of Fayetteville
Source: USACE National Inventory of Dams, NID ID AR00285 · Operator website
Nearby Lakes in Washington County
Frequently asked questions about Lake Wilson
Where is Lake Wilson?
- Lake Wilson is a lake in Washington County, Arkansas. Its water-quality measurements are published by Arkansas DEQ and shown on this page as reported.
What is the water quality of Lake Wilson?
- Lake Wilson in Washington County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Water clarity: 8 ft visibility. Surface area: 190.2 acres.
Is Lake Wilson safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lake Wilson across LakeQuality
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Where this data comes from
6 measurements from 1 monitoring station, 2017–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS6 samples · 2017–2024
Monitoring station identifiers (1)
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.