Dogtown Res. Lake is a productive, nutrient-rich eutrophic lake in Coconino County, Arizona. Water quality is graded F based on 1 sampling years through 2025. Compared to the 19 other monitored lakes in Coconino County, Dogtown Res. Lake ranks #15 for water quality.
Source: EPA Water Quality Portal sampling records, Arizona DNR, last sampled 2025-10-30. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Murky, only visible to about 3.4 ft. Phosphorus level: 149.5 µg/L. Trophic State Index: 68.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.4 ft | D |
| Phosphorus | 149.5 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 68 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Dogtown Res. Lake
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Fishing Dogtown Res. Lake
Location
County Ranking
Ranked #15 of 20 lakes in Coconino County
Cleaner Lakes Within 30 Miles
Dogtown Res. Lake holds Grade F. One nearby lake has a higher grade.
Nearby Lakes in Coconino County
Explore Dogtown Res. Lake across LakeGrade
More Arizona Lake Rankings
Other Grade F 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: 2025-10-30
Monitoring stations: 1