Nla Lake is a highly nutrient-loaded hypereutrophic lake in Shelby County, Tennessee. Water quality is graded F based on 2 sampling years through 2012. Compared to the 4 other monitored lakes in Shelby County, Nla Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Tennessee DNR, last sampled 2012-06-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 2 ft of visibility. Phosphorus level: 120000 µg/L. Chlorophyll-a: 71.8 µg/L. Trophic State Index: 104.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | F |
| Phosphorus | 120000 µg/L | F |
| Chlorophyll-a (Algae) | 71.8 µg/L | F |
| Trophic State Index (TSI) | 104 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Nla Lake
Location
County Ranking
Ranked #2 of 5 lakes in Shelby County
Nearby Lakes in Shelby County
Explore Nla Lake across LakeGrade
More Tennessee Lake Rankings
Other Grade F Lakes in Tennessee
Lake County · Very Poor
Lake County · Very Poor
Obion County · Very Poor
Obion County · Very Poor
Humphreys County · Very Poor
Maury County · Very Poor
Hypereutrophic Lakes in Tennessee
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: 2012-06-01
Monitoring stations: 1