What is the water quality grade for Nla Lake?

Nla Lake in Franklin County, Idaho received a water quality grade of D (Poor). Water clarity: 5.2 ft visibility. Phosphorus: 68.9 µg/L. Chlorophyll-a (algae): 22.7 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 22.7 µg/L. Always check local health department advisories before swimming.

Franklin County, Idaho

Nla Lake

Grade DPoor · 5.2 ft clarity

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Eutrophic

Nla Lake is a productive, nutrient-rich eutrophic lake in Franklin County, Idaho. Water quality is graded D based on 3 sampling years through 2017.

Source: EPA Water Quality Portal sampling records, Idaho DNR, last sampled 2017-07-19. 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

Murky, only visible to about 5.2 ft. Phosphorus level: 68.9 µg/L. Chlorophyll-a: 22.7 µg/L. Trophic State Index: 60.

Metric	Value	Grade
Water Clarity (Secchi Depth)	5.2 ft	D
Phosphorus	68.9 µg/L	D
Chlorophyll-a (Algae)	22.7 µg/L	D
Trophic State Index (TSI)	60	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Nla Lake

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Fishing Nla Lake

→ Nla Lake fishing regulations (limits, seasons, special rules)

Location

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County Ranking

Ranked #1 of 1 lakes in Franklin County

Cleaner Lakes Within 30 Miles

Nla Lake holds Grade D. 2 nearby lakes hold higher grades.

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Nearby Lakes in Franklin County

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Lake Fishing Forecast

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Eutrophic Lakes

High nutrients, frequent algae, reduced clarity

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Other Grade D Lakes in Idaho

Ririe Lake

Bonneville County · Clarity: 4.6 ft

Nla Lake

Fremont County · Clarity: 3.4 ft

Nla Lake

Fremont County · Clarity: 6.2 ft

Little Wood Reservoir

Blaine County · Poor

Nla Lake

Twin Falls County · Clarity: 5.6 ft

Nla Lake

Elmore County · Clarity: 3.4 ft

Eutrophic Lakes in Idaho

Mud Lake Nla Lake American Falls R Lake American Falls R-Sportsmans Cove Lake

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: 2017-07-19

Monitoring stations: 2

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