Nla Lake is a productive, nutrient-rich eutrophic lake in Chelan County, Washington. Water quality is graded C based on 3 sampling years through 2017. Compared to the 2 other monitored lakes in Chelan County, Nla Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Washington DNR, last sampled 2017-08-24. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Good clarity, visible to about 13.7 ft. Phosphorus level: 8004.8 µg/L. Chlorophyll-a: 1.6 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13.7 ft | B |
| Phosphorus | 8004.8 µg/L | F |
| Chlorophyll-a (Algae) | 1.6 µg/L | A |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Nla Lake
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Fishing Nla Lake
Location
County Ranking
Ranked #3 of 3 lakes in Chelan County
Cleaner Lakes Within 30 Miles
Nla Lake holds Grade C. 2 nearby lakes hold higher grades.
- BNla LakeDouglas County · 29.6 mi · Higher grade (C → B)
- BNla LakeOkanogan County · 28 mi · Higher grade (C → B)
Nearby Lakes in Chelan County
Explore Nla Lake across LakeGrade
More Washington Lake Rankings
Other Grade C Lakes in Washington
Eutrophic Lakes in Washington
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: 2017-08-24
Monitoring stations: 1