What is the water quality grade for Nla Lake?

Nla Lake in Cassia County, Idaho received a water quality grade of C (Fair). Water clarity: 3 ft visibility. Phosphorus: 1.9 µg/L. Chlorophyll-a (algae): 24.2 µg/L.

Is Nla Lake safe to swim in?

Swim with caution, moderate algae may be present. Nla Lake has an overall water quality grade of C. Algae concentration (chlorophyll-a) is 24.2 µg/L. Always check local health department advisories before swimming.

Cassia County, Idaho · 42.68°N

Nla Lake

Grade CFair · 3 ft clarity

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Mesotrophic

Nla Lake is a mesotrophic lake in Cassia County, Idaho. Water quality is graded C based on 3 sampling years through 2017. Compared to the 2 other monitored lakes in Cassia County, Nla Lake ranks #2 for water quality.

Source: EPA Water Quality Portal sampling records, Idaho DNR, last sampled 2017-07-20. Grade methodology: LakeGrade methodology.

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Swimming Safety

Swim with caution, moderate algae may be present

Water Quality Grade: C, Fair

Very murky, less than 3 ft of visibility. Phosphorus level: 1.9 µg/L. Chlorophyll-a: 24.2 µg/L. Trophic State Index: 46.

Metric	Value	Grade
Water Clarity (Secchi Depth)	3 ft	F
Phosphorus	1.9 µg/L	A
Chlorophyll-a (Algae)	24.2 µg/L	D
Trophic State Index (TSI)	46	Mesotrophic

Moderate nutrients, good water quality

Where to stay near Nla Lake

Compare lakeside cabins, hotels, and vacation rentals near Nla Lake in Cassia County, Idaho — 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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