Boulder Reservoir is a productive, nutrient-rich eutrophic lake in Washoe County, Nevada. Water quality is graded B based on 2 sampling years through 2019. Compared to the 22 other monitored lakes in Washoe County, Boulder Reservoir ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Nevada DNR, last sampled 2019-07-23. Grade methodology: LakeGrade methodology.
Watch Boulder Reservoir water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Good for swimming, clear water with low algae levels
Water Quality Grade: B, Good
No clarity data. Phosphorus level: 50 µg/L. Trophic State Index: 61.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 50 µg/L | C |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 61 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Boulder Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Boulder Reservoir in Washoe County, Nevada — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Boulder Reservoir
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Planning a trip to Boulder Reservoir?
Get lake water-quality report cards plus the best cabin & lodging deals near Boulder Reservoir — straight to your inbox. No spam, unsubscribe anytime.
Fishing Boulder Reservoir
Location
County Ranking
Ranked #2 of 23 lakes in Washoe County
Nearby Lakes in Washoe County
Explore Boulder Reservoir across LakeGrade
More Nevada Lake Rankings
Other Grade B Lakes in Nevada
Eutrophic Lakes in Nevada
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: 2019-07-23
Monitoring stations: 1