Nla Lake is a productive, nutrient-rich eutrophic lake in Cassia County, Idaho. Water quality is graded C based on 3 sampling years through 2017. Compared to the 2 other monitored lakes in Cassia County, Nla Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Idaho DNR, last sampled 2017-09-07. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 4.7 ft. Phosphorus level: 84.8 µg/L. Chlorophyll-a: 5.8 µg/L. Trophic State Index: 57.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 4.7 ft | D |
| Phosphorus | 84.8 µg/L | D |
| Chlorophyll-a (Algae) | 5.8 µg/L | B |
| Trophic State Index (TSI) | 57 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Nla Lake
Location
County Ranking
Ranked #1 of 3 lakes in Cassia County
Nearby Lakes in Cassia County
Explore Nla Lake across LakeGrade
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Eutrophic Lakes in Idaho
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: 2017-09-07
Monitoring stations: 1