Calamus Reservoir is a productive, nutrient-rich eutrophic lake in Garfield County, Nebraska. Water quality is graded D based on 2 sampling years through 2024.
Source: EPA Water Quality Portal sampling records, Nebraska DNR, last sampled 2024-09-23. 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 3.6 ft. Phosphorus level: 124.5 µg/L. Chlorophyll-a: 26.1 µg/L. Trophic State Index: 65.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.6 ft | D |
| Phosphorus | 124.5 µg/L | F |
| Chlorophyll-a (Algae) | 26.1 µg/L | D |
| Trophic State Index (TSI) | 65 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Location
County Ranking
Ranked #1 of 1 lakes in Garfield 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: 2024-09-23
Monitoring stations: 2