Nla Lake is a productive, nutrient-rich eutrophic lake in Okmulgee County, Oklahoma. Water quality is graded C based on 2 sampling years through 2017. Compared to the 1 other monitored lakes in Okmulgee County, Nla Lake ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, Oklahoma DNR, last sampled 2017-08-08. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Very murky, less than 0.4 ft of visibility. Phosphorus level: 29.8 µg/L. Chlorophyll-a: 11.8 µg/L. Trophic State Index: 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.4 ft | F |
| Phosphorus | 29.8 µg/L | C |
| Chlorophyll-a (Algae) | 11.8 µg/L | C |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Nla Lake
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Fishing Nla Lake
Location
County Ranking
Ranked #1 of 2 lakes in Okmulgee County
Nearby Lakes in Okmulgee County
Explore Nla Lake across LakeGrade
More Oklahoma Lake Rankings
Other Grade C Lakes in Oklahoma
Eutrophic 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: 2017-08-08
Monitoring stations: 1