Crystal Reservoir is a mesotrophic lake in Montrose County, Colorado. Water quality is graded A based on 2 sampling years through 2023.
Source: EPA Water Quality Portal sampling records, Colorado DNR, last sampled 2023-08-16. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 15.4 ft down. Phosphorus level: 15.7 µg/L. Trophic State Index: 41.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 15.4 ft | A |
| Phosphorus | 15.7 µg/L | A |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
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Location
County Ranking
Ranked #1 of 1 lakes in Montrose County
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More records, surveys & data sources
Data Sources
Water quality data from the EPA Water Quality Portal
Grading methodology based on Metropolitan Council standards
Most recent sample: 2023-08-16
Monitoring stations: 2