Nla Lake is a productive, nutrient-rich eutrophic lake in Spokane County, Washington. Water quality is graded D based on 3 sampling years through 2017. Compared to the 1 other monitored lakes in Spokane County, Nla Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Washington DNR, last sampled 2017-08-02. 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
Moderate clarity, visible to about 7.2 ft. Phosphorus level: 80.5 µg/L. Chlorophyll-a: 20.2 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 7.2 ft | C |
| Phosphorus | 80.5 µg/L | D |
| Chlorophyll-a (Algae) | 20.2 µg/L | D |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Nla Lake
Location
County Ranking
Ranked #2 of 2 lakes in Spokane County
Nearby Lakes in Spokane County
Explore Nla Lake across LakeGrade
More Washington Lake Rankings
Other Grade D 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: 2017-08-02
Monitoring stations: 1