Stoughton Pond
Windsor County, Vermont65 acresView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Impaired · Hydrologic alteration
- 27 ft max depth
- Limited data
Stoughton Pond in Windsor County, Vermont is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Surface area: 65 acres.
- Clarity
- 9 ft
- Max depth
- ~27 ft est.
- Area
- 65 acres
- Trend
- ↑ Improving
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Watch Stoughton Pond’s letter
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Why Stoughton Pond has no grade
Stoughton Pond has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Stoughton Pond is Not Rated — not an F. Its 9-foot median from 22 readings collected 2021–2024 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. 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.
Stoughton Pond is a 65-acre lake in Windsor County, Vermont with an estimated average depth of about 27 feet. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2024-04-29. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Stoughton Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for hydrologic alteration. Check local advisories before you swim.
Water quality measurements for Stoughton Pond
These readings exist but are not enough for an A–F grade — see why.
Moderate clarity, visible to about 9 ft. TSI 45.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~27 ft est. |
| Average Depth | ~22 ft est. |
| Surface Area | 65 acres |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Vermont has not published bathymetry for Stoughton Pond.
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Fishing Stoughton Pond
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +0.5 m/yr | 2 |
Reservoir Info (USACE NID)
Stoughton Pond is a man-made reservoir impounded by the North Branch Dam (completed 1960), built primarily for recreation on the North Branch Black River; earth-type dam, 75 ft tall and 900 ft long.
- Surface area
- 65 ac
- Normal storage
- 600 ac-ft
- Max storage
- 7,200 ac-ft
- Drainage area
- 29 sq mi
- Hazard class
- High
- Owner
- USACE - New England District
All listed purposes: Recreation;Flood Risk Reduction.
Source: USACE National Inventory of Dams, NID ID VT00286 · Operator website
EPA Impairment Status
Stoughton Pond 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 VT10-16L03_01 · Official waterbody report
Graded lakes near Stoughton Pond
Stoughton Pond has no grade, but these lakes within a short drive do.
Nearby Lakes in Windsor County
Frequently asked questions about Stoughton Pond
Where is Stoughton Pond?
- Stoughton Pond is a lake in Windsor County, Vermont. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Stoughton Pond?
- Stoughton Pond in Windsor County, Vermont is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 9 ft visibility. Surface area: 65 acres.
Is Stoughton Pond safe to swim in?
- The letter is not a swimming clearance. Stoughton Pond is listed impaired under Clean Water Act §303(d) (IR 4C) for hydrologic alteration. Check local advisories before you swim.
How deep is Stoughton Pond?
- No published bathymetric survey covers Stoughton Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 27 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate. The lake covers 65 acres.
Explore Stoughton Pond across LakeQuality
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Where this data comes from
22 measurements from 1 monitoring station, 2021–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ22 samples · 2021–2024
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 (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
Lake size & watershed from HydroLAKES (HydroSHEDS)