Knott Creek Reservoir is a highly nutrient-loaded hypereutrophic lake in Humboldt County, Nevada. Water quality is graded D based on 2 sampling years through 2021. Compared to the 8 other monitored lakes in Humboldt County, Knott Creek Reservoir ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, Nevada DNR, last sampled 2021-10-05. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swimming not recommended, poor water quality with high algae risk
Water Quality Grade: D, Poor
No clarity data. Phosphorus level: 145 µg/L. Chlorophyll-a: 32.5 µg/L. Trophic State Index: 70.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 145 µg/L | F |
| Chlorophyll-a (Algae) | 32.5 µg/L | D |
| Trophic State Index (TSI) | 70 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Knott Creek Reservoir
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Fishing Knott Creek Reservoir
Location
County Ranking
Ranked #9 of 9 lakes in Humboldt County
Cleaner Lakes Within 30 Miles
Knott Creek Reservoir holds Grade D. 5 nearby lakes hold higher grades.
- BOnion Valley Reservoir @ DamHumboldt County · 3.4 mi · Two grade letters higher (D → B)
- CBilk Creek ReservoirHumboldt County · 21.1 mi · Higher grade (D → C)
- CNla LakeHumboldt County · 3.3 mi · Higher grade (D → C)
- CNla LakeHumboldt County · 26.5 mi · Higher grade (D → C)
- DNla LakeHumboldt County · 21.1 mi · Higher overall water quality score
Nearby Lakes in Humboldt County
Explore Knott Creek Reservoir across LakeGrade
More Nevada Lake Rankings
Other Grade D Lakes in Nevada
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: 2021-10-05
Monitoring stations: 1