Hapgood Pond Outlet
Bennington County, Vermont4 acresView mapDirections
Not enough samples to grade — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). No letter yet. Here is what we do have.
- Impaired · Hydrologic alteration
- Limited data
Hapgood Pond Outlet in Bennington County, Vermont is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 16.7 µg/L. Surface area: 4 acres.
- Area
- 4 acres
- Phosphorus
- 16.7 µg/L
- Trend
- ↑ Improving
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Watch Hapgood Pond Outlet’s letter
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Why Hapgood Pond Outlet has no grade
We grade a lake only when the monitoring record supports a letter: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Hapgood Pond Outlet, no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years). Sampling here has recorded phosphorus, but not water clarity and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by VT DEC and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Hapgood Pond Outlet is a 4-acre lake in Bennington County, Vermont. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2022-08-11. Grade methodology: LakeQuality methodology.
What Hapgood Pond Outlet is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Hapgood Pond Outlet is listed impaired under Clean Water Act §303(d) (IR 4C) for hydrologic alteration. Check local advisories before you swim.
Water quality measurements for Hapgood Pond Outlet
These readings exist but are not enough for an A–F grade — see why.
No clarity data. Phosphorus 16.7 µg/L. TSI 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 16.7 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 4 acres |
No bathymetric survey has been published for Hapgood Pond Outlet, so its depth is not documented here.
Recreation & Access
Public campgrounds near Hapgood Pond Outlet
- Hapgood Pond Campground0.1 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Fishing Hapgood Pond Outlet
Water Quality Trend: ↑ Improving
Based on 4 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.635 m/yr | 3 |
| Phosphorus | ↑ Improving | -1.12 µg/L/yr | 4 |
| Chlorophyll-a | ↑ Improving | -0.5 µg/L/yr | 4 |
Reservoir Info (USACE NID)
Hapgood Pond Outlet is a man-made reservoir impounded by the Hapgood Pond Dike (completed 1939), built primarily for recreation on the Flood Brook-Tr; earth-type dam, 24 ft tall and 223 ft long.
- Surface area
- 4 ac
- Normal storage
- 0 ac-ft
- Max storage
- 86 ac-ft
- Drainage area
- 4.1 sq mi
- Hazard class
- Low
- Owner
- USDA FOREST SERVICE
Source: USACE National Inventory of Dams, NID ID VT00355 · Operator website · Matched by proximity (0.01 km)
EPA Impairment Status
Hapgood Pond Outlet is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4C).
Causes of impairment
Source: EPA ATTAINS assessment unit VT11-18L01 · Official waterbody report · Matched by proximity (0.13 km)
Graded lakes near Hapgood Pond Outlet
Hapgood Pond Outlet has no grade, but these lakes within a short drive do.
Nearby Lakes in Bennington County
Frequently asked questions about Hapgood Pond Outlet
Where is Hapgood Pond Outlet?
- Hapgood Pond Outlet is a lake in Bennington County, Vermont. LakeQuality has not rated this lake (UNRATED) — no nutrient or algae measurement meets the evidence bar (at least 3 samples within 10 years).
What is the water quality grade for Hapgood Pond Outlet?
- Hapgood Pond Outlet in Bennington County, Vermont is not rated for water quality — its monitoring record does not meet the evidence bar. Phosphorus: 16.7 µg/L. Surface area: 4 acres.
Is Hapgood Pond Outlet safe to swim in?
- The letter is not a swimming clearance. Hapgood Pond Outlet is listed impaired under Clean Water Act §303(d) (IR 4C) for hydrologic alteration. Check local advisories before you swim.
Are there campgrounds on Hapgood Pond Outlet?
- Hapgood Pond Outlet has 1 public campground from USGS The National Map within 5 km, including Hapgood Pond Campground. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
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Where this data comes from
1 measurement from 1 monitoring station, 2022. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ1 sample · 2022
Analytical methods
- EPA approved Alternate Test Procedure for 4500 P H. Has a 28 day hold without acid preservation.
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database
Public campgrounds from USGS The National Map Structures, within about 3 miles