Nla Lake is a highly nutrient-loaded hypereutrophic lake in Stephens County, Oklahoma. Water quality is graded F based on 2 sampling years through 2012. Compared to the 2 other monitored lakes in Stephens County, Nla Lake ranks #3 for water quality.
Source: EPA Water Quality Portal sampling records, Oklahoma DNR, last sampled 2012-08-08. 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 0.6 ft of visibility. Phosphorus level: 209000 µg/L. Chlorophyll-a: 90.9 µg/L. Trophic State Index: 113.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.6 ft | F |
| Phosphorus | 209000 µg/L | F |
| Chlorophyll-a (Algae) | 90.9 µg/L | F |
| Trophic State Index (TSI) | 113 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Nla Lake
Location
County Ranking
Ranked #3 of 3 lakes in Stephens County
Cleaner Lakes Within 30 Miles
Nla Lake holds Grade F. 3 nearby lakes hold higher grades.
- CNla LakeStephens County · 8.4 mi · Two grade letters higher (F → C)
- CNla LakeGrady County · 7.4 mi · Two grade letters higher (F → C)
- DNla LakeStephens County · 8.8 mi · Higher grade (F → D)
Nearby Lakes in Stephens County
Explore Nla Lake across LakeGrade
More Oklahoma Lake Rankings
Other Grade F Lakes in Oklahoma
Hypereutrophic Lakes in Oklahoma
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: 2012-08-08
Monitoring stations: 1