Crane Prairie Reservoir is a mesotrophic lake in Deschutes County, Oregon. Water quality is graded B based on 2 sampling years through 2025. Compared to the 12 other monitored lakes in Deschutes County, Crane Prairie Reservoir ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, Oregon DNR, last sampled 2025-09-30. Grade methodology: LakeGrade methodology.
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Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
Good clarity, visible to about 12.5 ft. Chlorophyll-a: 5.1 µg/L. Trophic State Index: 44.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12.5 ft | B |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | 5.1 µg/L | B |
| Trophic State Index (TSI) | 44 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Crane Prairie Reservoir
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Fishing Crane Prairie Reservoir
Location
County Ranking
Ranked #8 of 13 lakes in Deschutes County
Cleaner Lakes Within 30 Miles
Crane Prairie Reservoir holds Grade B. One nearby lake has a higher grade.
See full comparison →Nearby Lakes in Deschutes County
Explore Crane Prairie Reservoir across LakeGrade
More Oregon Lake Rankings
Other Grade B Lakes in Oregon
Mesotrophic 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: 2025-09-30
Monitoring stations: 1