Howard Prairie Lake is a productive, nutrient-rich eutrophic lake in Jackson County, Oregon. Water quality is graded B based on 1 sampling years through 2025. Compared to the 11 other monitored lakes in Jackson County, Howard Prairie Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, Oregon DNR, last sampled 2025-10-01. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
No clarity data. Chlorophyll-a: 10 µg/L. Trophic State Index: 53.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 10 µg/L | B |
| Trophic State Index (TSI) | 53 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Howard Prairie Lake
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Fishing Howard Prairie Lake
Location
County Ranking
Ranked #7 of 12 lakes in Jackson County
Nearby Lakes in Jackson County
Explore Howard Prairie Lake across LakeGrade
More Oregon Lake Rankings
Other Grade B 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: 2025-10-01
Monitoring stations: 1