Blockhouse Lake is a highly nutrient-loaded hypereutrophic lake in Washoe County, Nevada. Water quality is graded F based on 1 sampling years through 2021. Compared to the 22 other monitored lakes in Washoe County, Blockhouse Lake ranks #23 for water quality.
Source: EPA Water Quality Portal sampling records, Nevada DNR, last sampled 2021-09-29. 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
No clarity data. Phosphorus level: 500 µg/L. Trophic State Index: 94.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 500 µg/L | F |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 94 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
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Fishing Blockhouse Lake
Location
County Ranking
Ranked #23 of 23 lakes in Washoe County
Cleaner Lakes Within 30 Miles
Blockhouse Lake holds Grade F. One nearby lake has a higher grade.
Nearby Lakes in Washoe County
Explore Blockhouse Lake across LakeGrade
More Nevada Lake Rankings
Other Grade F Lakes in Nevada
Churchill County · Very Poor
Elko County · Very Poor
Elko County · Clarity: 3 ft
Elko County · Clarity: 5.9 ft
Elko County · Very Poor
Clark County · Very Poor
Hypereutrophic 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: 2021-09-29
Monitoring stations: 1