Howard Prairie Reservoir is a productive, nutrient-rich eutrophic lake in Jackson County, Oregon. Water quality is graded F based on 2 sampling years through 2021. Compared to the 11 other monitored lakes in Jackson County, Howard Prairie Reservoir ranks #12 for water quality.
Source: EPA Water Quality Portal sampling records, Oregon DNR, last sampled 2021-06-29. 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
Very murky, less than 2.3 ft of visibility. Phosphorus level: 124 µg/L. Trophic State Index: 69.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.3 ft | F |
| Phosphorus | 124 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 69 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Howard Prairie Reservoir
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Fishing Howard Prairie Reservoir
Location
County Ranking
Ranked #12 of 12 lakes in Jackson County
Nearby Lakes in Jackson County
Explore Howard Prairie Reservoir across LakeGrade
More Oregon Lake Rankings
Other Grade F Lakes in Oregon
Eutrophic Lakes in Oregon
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: 2021-06-29
Monitoring stations: 1