Fairfield Pond
Franklin County, VermontView mapDirections
Vermont DEC publishes the water-quality measurements for Fairfield Pond. Here is what has been measured.
- Mesotrophic
- 51 ft max depth
Fairfield Pond in Franklin County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 19.7 ft visibility. Phosphorus: 15.9 µg/L. Chlorophyll-a (algae): 2.2 µg/L.
Fairfield Pond is a mesotrophic lake in Franklin County, Vermont with an estimated average depth of about 51 feet. Overall water quality is improving over recent sampling years. Compared to the 4 other monitored lakes in Franklin County, Fairfield Pond ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-10. Methodology: how these readings are compared.
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What Fairfield Pond is good for
From access and monitoring records, not editorial picks.
- Clear water19.7 ft of visibility
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. Check local advisories before you swim.
Whether Fairfield 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 Fairfield Pond
These are the measurements Vermont DEC publishes for Fairfield 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 19.7 ft down. Phosphorus 15.9 µg/L. Chlorophyll-a 2.2 µg/L. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 19.7ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 15.9µg/L | Good GoodFairPoor |
| Chlorophyll-a (algae) | 2.2µg/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 Fairfield Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~51 ft est.
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Vermont has not published bathymetry for Fairfield Pond.
Lake Size & Watershed
Watershed (drainage) area
2 sq mi
HydroLAKES / HydroSHEDS
Surface area
425 acres
HydroLAKES / HydroSHEDS
Shoreline
4.9 mi
HydroLAKES / HydroSHEDS
Elevation
548 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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Stays near Fairfield Pond
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Top-rated places to stay near Fairfield Pond
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Fishing Fairfield Pond
Water Quality Trend: Improving
Based on 5 years of monitoring (2021–2025).
Water clarity
Worsening5 years
Phosphorus
Improving-1.01 µg/L/yr5 years
Chlorophyll-a
Improving-1.55 µg/L/yr5 years
Nearby Lakes in Franklin County
Frequently asked questions about Fairfield Pond
Where is Fairfield Pond?
- Fairfield Pond is a lake in Franklin County, Vermont. Its water-quality measurements are published by Vermont DEC and shown on this page as reported.
What is the water quality of Fairfield Pond?
- Fairfield Pond in Franklin County, Vermont has water-quality measurements published by Vermont DEC, shown here as reported. Water clarity: 19.7 ft visibility. Phosphorus: 15.9 µg/L. Chlorophyll-a (algae): 2.2 µg/L.
Is Fairfield Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Fairfield Pond?
- No published bathymetric survey covers Fairfield Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 51 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
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Where this data comes from
165 measurements from 2 monitoring stations, 2021–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ165 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
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
Lake size & watershed from HydroLAKES (HydroSHEDS)