Lower Sunlight Lake
La Plata County, ColoradoView mapDirections
Colorado WQCD publishes the water-quality measurements for Lower Sunlight Lake. Here is what has been measured.
- Limited data
Ask about Lower Sunlight Lake
Answers come straight from the public measurements and survey records on this page.
Lower Sunlight Lake in La Plata County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Phosphorus: 3.5 µg/L.
Stays via Stay22
Stays near Lower Sunlight Lake
Compare lakeside cabins, hotels, and vacation rentals near Lower Sunlight Lake in La Plata County, Colorado — 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.
Top-rated places to stay near Lower Sunlight Lake
Prices for Sep 18–20, 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 Colorado’s top lakes →
Follow Lower Sunlight Lake’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Lower Sunlight Lake is a lake in La Plata County, Colorado.
Source: EPA Water Quality Portal sampling records, CDPHE, last sampled 2020-09-23. Grade methodology: LakeQuality methodology.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Lower Sunlight 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 Lower Sunlight Lake
These are the measurements Colorado WQCD publishes for Lower Sunlight 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 3.5 µg/L. TSI 22.
| Metric | Value | EPA condition class |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 3.5 µg/L | Measured, not scored |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 22 | Oligotrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Fishing Lower Sunlight Lake
Nearby Lakes in La Plata County
Frequently asked questions about Lower Sunlight Lake
Where is Lower Sunlight Lake?
- Lower Sunlight Lake is a lake in La Plata County, Colorado. Its water-quality measurements are published by Colorado WQCD and shown on this page as reported.
What is the water quality of Lower Sunlight Lake?
- Lower Sunlight Lake in La Plata County, Colorado has water-quality measurements published by Colorado WQCD, shown here as reported. Phosphorus: 3.5 µg/L.
Is Lower Sunlight Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Lower Sunlight Lake across LakeQuality
More lakes in Colorado
Other Lakes in Colorado
Oligotrophic Lakes in Colorado
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.