Martins Pond
Caledonia County, Vermont77 acresView mapDirections
Nutrients and algae sit mid-range for this region.
↓ down from B at the last regrade
- Mesotrophic
- #9 of 9 in the county
- 26 ft max depth
- Public access
- Limited data
Martins Pond in Caledonia County, Vermont has a water quality grade of C (Fair). Water clarity: 12.1 ft visibility. Phosphorus: 19.4 µg/L. Chlorophyll-a (algae): 5.8 µg/L. Surface area: 77 acres.
- Clarity
- 12.1 ft
- Max depth
- ~26 ft est.
- Area
- 77 acres
- Type
- Mesotrophic
- Phosphorus
- 19.4 µg/L
- Chlorophyll-a
- 5.8 µg/L
- Trend
- → Stable
- Public access
- Yes
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Watch Martins Pond’s letter
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Martins Pond is a 77-acre mesotrophic lake in Caledonia County, Vermont with an estimated average depth of about 26 feet. Water quality is graded C based on 1 sampling years through 2025. Limited fish-species data available. Public access is available with 1 public boat landing. Compared to the 8 other monitored lakes in Caledonia County, Martins Pond ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, VT DEC, last sampled 2025-08-19. Grade methodology: LakeQuality methodology.
What Martins Pond is good for
From access and monitoring records, not editorial picks.
- Clear water12.1 ft of visibility
- Boat launch1 documented ramp
Swimming Safety
Grade onlyLimited data
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 C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
Water Quality Grade: C (Fair)
Good clarity, visible to about 12.1 ft. Phosphorus 19.4 µg/L. Chlorophyll-a 5.8 µg/L. TSI 45. The letter is not a swimming clearance.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 12.1 ft | Not graded |
| Phosphorus | 19.4 µg/L | Fair |
| Chlorophyll-a (Algae) | 5.8 µg/L | Not graded |
| Trophic State Index (TSI) | 45 | Mesotrophic |
Moderate nutrients, good water quality
Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | ~26 ft est. |
| Average Depth | ~18 ft est. |
| Surface Area | 77 acres |
| 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 Martins 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
- Martins PondPublic
Named access points in the USGS National Boat Ramps inventory, within about 3 miles. More lakes with boat ramps
Fishing Martins Pond
Water Quality Trend: → Stable
Based on 6 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | → Stable | -0.053 m/yr | 6 |
Reservoir Info (USACE NID)
Martins Pond is a man-made reservoir impounded by the Martins Pond (completed 1958), built primarily for recreation on the Stevens River-Tr; concrete-type dam, 10 ft tall and 142 ft long.
- Surface area
- 77 ac
- Normal storage
- 0 ac-ft
- Max storage
- 580 ac-ft
- Drainage area
- 1.26 sq mi
- Hazard class
- Low
- Owner
- STATE OF VERMONT - DFW
Source: USACE National Inventory of Dams, NID ID VT00089 · Operator website
County Ranking
Ranked #9 of 9 lakes in Caledonia County
Nearby Lakes With Higher Grades
Martins Pond holds Grade C. 3 nearby lakes hold higher nutrient-and-algae grades — useful for a swim day, not a reason to skip lodging here.
Nearby Lakes in Caledonia County
Frequently asked questions about Martins Pond
Where is Martins Pond?
- Martins Pond is a lake in Caledonia County, Vermont. LakeQuality grades it C for nutrients and algae. The letter is not a swimming clearance.
What is the water quality grade for Martins Pond?
- Martins Pond in Caledonia County, Vermont has a water quality grade of C (Fair). Water clarity: 12.1 ft visibility. Phosphorus: 19.4 µg/L. Chlorophyll-a (algae): 5.8 µg/L. Surface area: 77 acres.
Is Martins Pond safe to swim in?
- The C is nutrients and algae, not a swimming clearance. Check local advisories before you swim.
How deep is Martins Pond?
- No published bathymetric survey covers Martins Pond, so its depth has not been measured. The HydroLAKES global model estimates an average depth of about 26 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 77 acres.
Are there boat ramps on Martins Pond?
- Martins Pond has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Martins Pond. Public access is listed as yes.
Explore Martins Pond across LakeQuality
More Vermont Lake Rankings
Other Grade C Lakes in Vermont
Mesotrophic Lakes in Vermont
Where this data comes from
57 measurements from 4 monitoring stations, 2020–2025. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Vermont Dept of Environmental Conservation
1VTDECWQ57 samples · 2020–2025
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 (4)
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