East Long Pond
Washington County, Vermont177 acresView mapDirections
Vermont DEC publishes the water-quality measurements for East Long Pond. Here is what has been measured.
- Mesotrophic
- 63 ft max depth
- Limited data
East Long Pond in Washington County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 20.7 ft visibility. Phosphorus: 13.7 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Surface area: 177 acres.
East Long Pond is a 177-acre mesotrophic lake in Washington County, Vermont with an estimated average depth of about 63 feet. Overall water quality is declining over recent sampling years. Compared to the 8 other monitored lakes in Washington County, East Long Pond ranks #8 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-31. Methodology: how these readings are compared.
What East Long Pond is good for
From access and monitoring records, not editorial picks.
- Clear water20.7 ft of visibility
Swimming conditions
Readings onlyLimited data
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. Check local advisories before you swim.
Whether East Long 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 East Long Pond
These are the measurements Vermont DEC publishes for East Long Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Crystal clear, you can see 20.7 ft down. Phosphorus 13.7 µg/L. Chlorophyll-a 2.8 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 20.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 13.7µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 2.8µg/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. | 39 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about East Long Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~63 ft est.
Surface area
177 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 East Long Pond.
Lake Size & Watershed
Watershed (drainage) area
3 sq mi
HydroLAKES / HydroSHEDS
Shoreline
2.9 mi
HydroLAKES / HydroSHEDS
Elevation
1,211 ft
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.
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Fishing East Long Pond
Water Quality Trend: Worsening
Based on 6 years of monitoring (2020–2025).
Water clarity
Worsening6 years
Phosphorus
Worsening+5.1 µg/L/yr2 years
Reservoir Info (USACE NID)
East Long Pond is a man-made reservoir impounded by the East Long Pond (completed 1930), built primarily for other on the Nichols Brook; earth-type dam, 20 ft tall and 260 ft long.
- Surface area
- 177 ac
- Normal storage
- 0 ac-ft
- Max storage
- 3,620 ac-ft
- Drainage area
- 3.6 sq mi
- Hazard class
- High
- Owner
- HARDWICK ELECTRIC DEPARTMENT
All listed purposes: Other;Recreation.
Source: USACE National Inventory of Dams, NID ID VT00185 · Operator website
Nearby Lakes in Washington County
Frequently asked questions about East Long Pond
Where is East Long Pond?
- East Long Pond is a lake in Washington County, Vermont. Its water-quality measurements are published by Vermont DEC and shown on this page as reported.
What is the water quality of East Long Pond?
- East Long Pond in Washington County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 20.7 ft visibility. Phosphorus: 13.7 µg/L. Chlorophyll-a (algae): 2.8 µg/L. Surface area: 177 acres.
Is East Long Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is East Long Pond?
- No published bathymetric survey covers East Long Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 63 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 177 acres.
Explore East Long Pond across LakeQuality
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Where this data comes from
50 measurements from 1 monitoring station, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ50 samples · 2021–2025
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 (1)
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
Lake size & watershed from HydroLAKES (HydroSHEDS)