What is the water quality grade for Nla Lake?

Nla Lake in Stevens County, Washington received a water quality grade of D (Poor). Water clarity: 7.7 ft visibility. Phosphorus: 93000 µg/L. Chlorophyll-a (algae): 29.7 µg/L.

Is Nla Lake safe to swim in?

Swimming not recommended, poor water quality with high algae risk. Nla Lake has an overall water quality grade of D. Algae concentration (chlorophyll-a) is 29.7 µg/L. Always check local health department advisories before swimming.

Stevens County, Washington · 48.42°N

Nla Lake

Grade DPoor · 7.7 ft clarity

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Hypereutrophic

Nla Lake is a highly nutrient-loaded hypereutrophic lake in Stevens County, Washington. Water quality is graded D based on 3 sampling years through 2012. Compared to the 3 other monitored lakes in Stevens County, Nla Lake ranks #4 for water quality.

Source: EPA Water Quality Portal sampling records, Washington DNR, last sampled 2012-07-18. 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 7.7 ft. Phosphorus level: 93000 µg/L. Chlorophyll-a: 29.7 µg/L. Trophic State Index: 94.

Metric	Value	Grade
Water Clarity (Secchi Depth)	7.7 ft	C
Phosphorus	93000 µg/L	F
Chlorophyll-a (Algae)	29.7 µg/L	D
Trophic State Index (TSI)	94	Hypereutrophic

Very high nutrients, dense algae, poor clarity

Where to stay near Nla Lake

Compare lakeside cabins, hotels, and vacation rentals near Nla Lake in Stevens County, Washington — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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