Fosters Pond
Caledonia County, VermontView mapDirections
Clarity, phosphorus, and algae all sit in the cleanest band for this region.
- Mesotrophic
- #7 of 9 in the county
- 35 ft max depth
- Public access
Fosters Pond in Caledonia County, Vermont has a water quality grade of A (Excellent). Phosphorus: 13.2 µg/L. Chlorophyll-a (algae): 2.9 µg/L.
- Max depth
- ~35 ft est.
- Type
- Mesotrophic
- Phosphorus
- 13.2 µg/L
- Chlorophyll-a
- 2.9 µg/L
- Trend
- ↑ Improving
- Public access
- Yes
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Watch Fosters Pond’s letter
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Fosters Pond is a mesotrophic lake in Caledonia County, Vermont with an estimated average depth of about 35 feet. Water quality is graded A based on 2 sampling years through 2023. Overall water quality is improving over recent sampling years. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 8 other monitored lakes in Caledonia County, Fosters Pond ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2023-08-28. Grade methodology: LakeQuality methodology.
What Fosters Pond is good for
From access and monitoring records, not editorial picks.
- Boat launch1 documented ramp
Swimming Safety
Grade onlyLow algae
Based on clarity and algae grades from past sampling — we do not hold live water temperature and a current cyanobacteria reading for this lake. Check your state or county health department before you swim.
The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: A (Excellent)
No clarity data. Phosphorus 13.2 µg/L. Chlorophyll-a 2.9 µg/L. TSI 41. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 13.2 µg/L | Good |
| Chlorophyll-a (Algae) | 2.9 µg/L | Good |
| Trophic State Index (TSI) | 41 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~35 ft est. |
| Average Depth | ~19 ft est. |
| Public Access | Yes |
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. Vermont has not published bathymetry for Fosters 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.
Recreation & Access
- Fosters PondPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Fosters Pond
Water Quality Trend: ↑ Improving
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Phosphorus | ↑ Improving | -0.95 µg/L/yr | 3 |
| Chlorophyll-a | ↑ Improving | -0.4 µg/L/yr | 3 |
County Ranking
Ranked #7 of 9 lakes in Caledonia County
Nearby Lakes in Caledonia County
Frequently asked questions about Fosters Pond
Where is Fosters Pond?
- Fosters Pond is a lake in Caledonia County, Vermont. LakeQuality grades it A for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Fosters Pond?
- Fosters Pond in Caledonia County, Vermont has a water quality grade of A (Excellent). Phosphorus: 13.2 µg/L. Chlorophyll-a (algae): 2.9 µg/L.
Is Fosters Pond safe to swim in?
- The A is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Fosters Pond?
- No published bathymetric survey covers Fosters Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 35 feet, but that is a modelled estimate derived from surrounding terrain rather than a measurement on the water, so treat it as approximate.
Are there boat ramps on Fosters Pond?
- Fosters Pond has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Fosters Pond. Public access is listed as yes.
Explore Fosters Pond across LakeQuality
More Vermont Lake Rankings
Other Grade A Lakes in Vermont
Mesotrophic Lakes in Vermont
Where this data comes from
43 measurements from 1 monitoring station, 2021–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ43 samples · 2021–2023
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 (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
Lake size & watershed from HydroLAKES (HydroSHEDS)
Named boat-access points from the USGS National Boat Ramps inventory