Big Creek Reservoir is a productive, nutrient-rich eutrophic lake in Mesa County, Colorado. Water quality is graded D based on 1 sampling years through 2023. Compared to the 2 other monitored lakes in Mesa County, Big Creek Reservoir ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Colorado DNR, last sampled 2023-07-11. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 3.4 ft. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.4 ft | D |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Big Creek Reservoir
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Location
County Ranking
Ranked #2 of 3 lakes in Mesa County
Nearby Lakes in Mesa County
Explore Big Creek Reservoir across LakeGrade
More Colorado Lake Rankings
Other Grade D Lakes in Colorado
Eutrophic Lakes in Colorado
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: 2023-07-11
Monitoring stations: 1