Hapgood Pond
Bennington County, Vermont8 acresView mapDirections
Vermont DEC publishes the water-quality measurements for Hapgood Pond. Here is what has been measured.
- Mesotrophic
- Impaired · Hydrologic alteration
Hapgood Pond in Bennington County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 9.2 ft visibility. Phosphorus: 11.8 µg/L. Chlorophyll-a (algae): 2.7 µg/L. Surface area: 8 acres.
Hapgood Pond is a 8-acre mesotrophic lake in Bennington County, Vermont. Overall water quality is improving over recent sampling years. Compared to the 7 other monitored lakes in Bennington County, Hapgood Pond ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-27. Methodology: how these readings are compared.
Hapgood Pond covers about 8 acres in Bennington County. If you are planning to stay, you can search lake houses and cabins around Hapgood Pond on Vrbo, or look for a hotel room near the lake on Booking.com or Expedia.
Swimming conditions
Readings onlyLow algae
Based on clarity and algae readings from past sampling — there is no live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
Nutrient and algae readings are not a swimming clearance. Hapgood Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for hydrologic alteration. Check local advisories before you swim.
Whether Hapgood Pond is safe to swim in today is a call for the Vermont Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Hapgood Pond
These are the measurements Vermont DEC publishes for Hapgood Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Moderate clarity, visible to about 9.2 ft. Phosphorus 11.8 µg/L. Chlorophyll-a 2.7 µg/L. TSI 42.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 9.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 11.8µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 2.7µg/L | Good GoodFairPoor |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 42 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Hapgood Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
8 acres
No bathymetric survey has been published for Hapgood Pond, so its depth is not documented here.
Stays via Stay22
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Fishing Hapgood Pond
Water Quality Trend: Improving
Based on 4 years of monitoring (2022–2025).
Water clarity
Worsening3 years
Phosphorus
Improving-1.12 µg/L/yr4 years
Chlorophyll-a
Improving-0.5 µg/L/yr4 years
Reservoir Info (USACE NID)
Hapgood Pond is a man-made reservoir impounded by the Hapgood Pond Dam (completed 1980), built primarily for water supply on the Flood Brook; other-type dam, 27 ft tall and 128 ft long.
- Surface area
- 8 ac
- Normal storage
- 43 ac-ft
- Max storage
- 86 ac-ft
- Drainage area
- 4 sq mi
- Hazard class
- Low
- Owner
- USDA FS
Source: USACE National Inventory of Dams, NID ID VT00354 · Operator website
EPA Impairment Status
Hapgood Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit VT11-18L01 · Official waterbody report
Nearby Lakes in Bennington County
Frequently asked questions about Hapgood Pond
Where is Hapgood Pond?
- Hapgood Pond is a lake in Bennington County, Vermont. Its water-quality measurements are published by Vermont DEC and shown on this page as reported.
What is the water quality of Hapgood Pond?
- Hapgood Pond in Bennington County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 9.2 ft visibility. Phosphorus: 11.8 µg/L. Chlorophyll-a (algae): 2.7 µg/L. Surface area: 8 acres.
Is Hapgood Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Hapgood Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for hydrologic alteration. Check local advisories before you swim.
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Where this data comes from
69 measurements from 2 monitoring stations, 2022–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ69 samples · 2022–2025
Analytical methods
- EPA approved Alternate Test Procedure for 4500 P H. Has a 28 day hold without acid preservation.
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- 2130 B ~ Nephelometric Method
Monitoring station identifiers (2)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database