Nla Lake is a highly nutrient-loaded hypereutrophic lake in Sheridan County, Montana. Water quality is graded C based on 2 sampling years through 2012. Compared to the 2 other monitored lakes in Sheridan County, Nla Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Montana DNR, last sampled 2012-06-26. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
No clarity data. Phosphorus level: 355000 µg/L. Chlorophyll-a: 3.2 µg/L. Trophic State Index: 115.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 355000 µg/L | F |
| Chlorophyll-a (Algae) | 3.2 µg/L | A |
| Trophic State Index (TSI) | 115 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Nla Lake
Location
County Ranking
Ranked #1 of 3 lakes in Sheridan County
Nearby Lakes in Sheridan County
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More Montana Lake Rankings
Other Grade C Lakes in Montana
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: 2012-06-26
Monitoring stations: 1