Nla Lake is a highly nutrient-loaded hypereutrophic lake in Apache County, Arizona. Water quality is graded D based on 2 sampling years through 2017. Compared to the 10 other monitored lakes in Apache County, Nla Lake ranks #6 for water quality.
Source: EPA Water Quality Portal sampling records, Arizona DNR, last sampled 2017-08-08. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
Murky, only visible to about 5.1 ft. Phosphorus level: 468 µg/L. Chlorophyll-a: 32.1 µg/L. Trophic State Index: 70.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 5.1 ft | C |
| Phosphorus | 468 µg/L | F |
| Chlorophyll-a (Algae) | 32.1 µg/L | D |
| Trophic State Index (TSI) | 70 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Location
County Ranking
Ranked #6 of 11 lakes in Apache County
Nearby Lakes in Apache County
Explore Nla Lake across LakeGrade
More Arizona Lake Rankings
Other Grade D Lakes in Arizona
Hypereutrophic Lakes in Arizona
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