Ned Wilson Lake
Rio Blanco County, ColoradoView mapDirections
Colorado WQCD publishes the water-quality measurements for Ned Wilson Lake. Here is what has been measured.
- Impaired · Oxygen depletion (low DO)
- Limited data
Ned Wilson Lake in Rio Blanco County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Phosphorus: 13.5 µg/L.
Ned Wilson Lake is a lake in Rio Blanco County, Colorado.
Source: EPA Water Quality Portal sampling records, CDPHE, last sampled 2020-09-03. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Ned Wilson Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
Whether Ned Wilson Lake is safe to swim in today is a call for the Water Quality Control Division of the Colorado Department of Public Health and Environment and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Ned Wilson Lake
These are the measurements Colorado WQCD publishes for Ned Wilson Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 13.5 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 13.5µg/L | Measured, not scored 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. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
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Fishing Ned Wilson Lake
EPA Impairment Status
Ned Wilson Lake is officially listed as impaired under Clean Water Act §303(d) in the 2024 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit COLCWH24_C · Official waterbody report
Nearby Lakes in Rio Blanco County
Frequently asked questions about Ned Wilson Lake
Where is Ned Wilson Lake?
- Ned Wilson Lake is a lake in Rio Blanco County, Colorado. Its water-quality measurements are published by Colorado WQCD and shown on this page as reported.
What is the water quality of Ned Wilson Lake?
- Ned Wilson Lake in Rio Blanco County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Phosphorus: 13.5 µg/L.
Is Ned Wilson Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Ned Wilson Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
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Where this data comes from
2 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Colorado Water Science Center
USGS-CO2 samples · 2020
Analytical methods
- P, wu, WCA, persulfate CF color
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.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database