Nla Lake is a highly nutrient-loaded hypereutrophic lake in Grady County, Oklahoma. Water quality is graded C based on 2 sampling years through 2017. Compared to the 1 other monitored lakes in Grady County, Nla Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Oklahoma DNR, last sampled 2017-06-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Murky, only visible to about 6.5 ft. Phosphorus level: 2506.5 µg/L. Chlorophyll-a: 3.8 µg/L. Trophic State Index: 70.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 6.5 ft | C |
| Phosphorus | 2506.5 µg/L | F |
| Chlorophyll-a (Algae) | 3.8 µg/L | B |
| Trophic State Index (TSI) | 70 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Nla Lake
Location
County Ranking
Ranked #2 of 2 lakes in Grady County
Cleaner Lakes Within 30 Miles
Nla Lake holds Grade C. 2 nearby lakes hold higher grades.
- BNla LakeGrady County · 23.9 mi · Higher grade (C → B)
- CNla LakeStephens County · 14.1 mi · Higher overall water quality score
Nearby Lakes in Grady County
Explore Nla Lake across LakeGrade
More Oklahoma Lake Rankings
Other Grade C 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: 2017-06-27
Monitoring stations: 1