What is the water quality grade for Nla Lake?

Nla Lake in Boise County, Idaho received a water quality grade of B (Good). Water clarity: 23.3 ft visibility. Phosphorus: 23000 µg/L. Chlorophyll-a (algae): 0.5 µg/L.

Is Nla Lake safe to swim in?

Good for swimming, clear water with low algae levels. Nla Lake has an overall water quality grade of B. Algae concentration (chlorophyll-a) is 0.5 µg/L. Always check local health department advisories before swimming.

Boise County, Idaho

Nla Lake

Grade BGood · 23.3 ft clarity

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Eutrophic

Nla Lake is a productive, nutrient-rich eutrophic lake in Boise County, Idaho. Water quality is graded B based on 3 sampling years through 2012. Compared to the 1 other monitored lakes in Boise County, Nla Lake ranks #1 for water quality.

Source: EPA Water Quality Portal sampling records, Idaho DNR, last sampled 2012-07-23. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Water Quality Grade: B, Good

Crystal clear, you can see 23.3 ft down. Phosphorus level: 23000 µg/L. Chlorophyll-a: 0.5 µg/L. Trophic State Index: 68.

Metric	Value	Grade
Water Clarity (Secchi Depth)	23.3 ft	A
Phosphorus	23000 µg/L	F
Chlorophyll-a (Algae)	0.5 µg/L	A
Trophic State Index (TSI)	68	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 2 lakes in Boise County

Cleaner Lakes Within 30 Miles

Nla Lake holds Grade B. 5 nearby lakes hold higher grades.

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Nearby Lakes in Boise County

Deadwood Res Off Face of Dam Lake

Explore Nla Lake across LakeGrade

Lake Fishing Forecast

Species activity outlook by water temperature and season

Eutrophic Lakes

High nutrients, frequent algae, reduced clarity

The State of Idaho's Lakes

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Cleanest lakes in Idaho

Top 25 by overall water quality score

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Top 25 by Secchi water clarity

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Grade A/B + low algae filter

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Panfish-rich, public access

All Idaho lakes

Full state directory

Other Grade B Lakes in Idaho

Nla Lake

Custer County · Clarity: 38.1 ft

Cascade Reservoir A Sugar Loaf Island

Valley County · Clarity: 8.5 ft

Cascade R W of Sugarloaf Island Lake

Valley County · Clarity: 8.2 ft

Cascade Reservoir

Valley County · Clarity: 8.2 ft

Arrowrock Reservoir

Elmore County · Clarity: 12.5 ft

Black Cnyn Reservoir Ns of

Gem County · Clarity: 7.5 ft

Eutrophic Lakes in Idaho

Nla Lake Nla Lake Arrowrock Reservoir Cas Reservoir Inlet Between Lf And

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: 2012-07-23

Monitoring stations: 1

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