Show Low Lake is a mesotrophic lake in Navajo County, Arizona. Water quality is graded C based on 1 sampling years through 2025. Compared to the 4 other monitored lakes in Navajo County, Show Low Lake ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Arizona DNR, last sampled 2025-11-05. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
Moderate clarity, visible to about 8.4 ft. Phosphorus level: 30.5 µg/L. Trophic State Index: 50.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 8.4 ft | B |
| Phosphorus | 30.5 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 50 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Show Low Lake
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Fishing Show Low Lake
Location
County Ranking
Ranked #2 of 5 lakes in Navajo County
Nearby Lakes in Navajo County
Explore Show Low Lake across LakeGrade
More Arizona Lake Rankings
Other Grade C Lakes in Arizona
Mesotrophic 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: 2025-11-05
Monitoring stations: 1