Cohoke Millpond is a productive, nutrient-rich eutrophic lake in King William County, Virginia. Water quality is graded D based on 1 sampling years through 2020.
Source: EPA Water Quality Portal sampling records, Virginia DNR, last sampled 2020-12-29. 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: 65 µg/L. Trophic State Index: 64.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No data | |
| Phosphorus | 65 µg/L | D |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 64 | Eutrophic |
High nutrients, frequent algae, reduced clarity
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Fishing Cohoke Millpond
Location
County Ranking
Ranked #1 of 1 lakes in King William County
Cleaner Lakes Within 30 Miles
Cohoke Millpond holds Grade D. 3 nearby lakes hold higher grades.
Nearby Lakes in King William County
Explore Cohoke Millpond across LakeGrade
More Virginia Lake Rankings
Other Grade D Lakes in Virginia
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York County · Clarity: 10.4 ft
Richmond city County · Clarity: 2.4 ft
Colonial Heights city County · Poor
Eutrophic Lakes in Virginia
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: 2020-12-29
Monitoring stations: 1