Dogtown Reservoir is a productive, nutrient-rich eutrophic lake in Coconino County, Arizona. Water quality is graded C based on 1 sampling years through 2025. Compared to the 19 other monitored lakes in Coconino County, Dogtown Reservoir ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, Arizona DNR, last sampled 2025-03-20. Grade methodology: LakeGrade methodology.
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Swimming Safety
Generally safe for swimming, moderate water quality
Water Quality Grade: C, Fair
No clarity data. Phosphorus level: 33 µg/L. Trophic State Index: 55.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 33 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 55 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Dogtown Reservoir
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Fishing Dogtown Reservoir
Location
County Ranking
Ranked #8 of 20 lakes in Coconino County
Nearby Lakes in Coconino County
Explore Dogtown Reservoir across LakeGrade
More Arizona Lake Rankings
Other Grade C Lakes in Arizona
Eutrophic 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: 2025-03-20
Monitoring stations: 1