Nla Lake is a productive, nutrient-rich eutrophic lake in Bonner County, Idaho. Water quality is graded C based on 3 sampling years through 2017. Compared to the 6 other monitored lakes in Bonner County, Nla Lake ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, Idaho DNR, last sampled 2017-08-07. 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 3.9 ft. Phosphorus level: 30.9 µg/L. Chlorophyll-a: 8 µg/L. Trophic State Index: 54.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.9 ft | D |
| Phosphorus | 30.9 µg/L | C |
| Chlorophyll-a (Algae) | 8 µg/L | B |
| Trophic State Index (TSI) | 54 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Nla Lake
Location
County Ranking
Ranked #5 of 7 lakes in Bonner County
Cleaner Lakes Within 30 Miles
Nla Lake holds Grade C. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Bonner County
Explore Nla Lake across LakeGrade
More Idaho Lake Rankings
Other Grade C Lakes in Idaho
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: 2017-08-07
Monitoring stations: 1