Grass Pond
Franklin County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Grass Pond. Here is what has been measured.
- Mesotrophic
- 26 ft max depth
- Public access
- Limited data
Grass Pond in Franklin County, New York has water-quality measurements published by NY DEC, shown here as reported. Phosphorus: 18 µg/L. Chlorophyll-a (algae): 4.1 µg/L.
Grass Pond is a mesotrophic lake in Franklin County, New York with an estimated average depth of about 26 feet. Phosphorus level is improving over recent sampling years. Limited fish-species data available. Public access is available. Compared to the 6 other monitored lakes in Franklin County, Grass Pond ranks #5 for water quality.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2023-07-10. Methodology: how these readings are compared.
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 Grass Pond is safe to swim in today is a call for the New York Department of Environmental Conservation and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Grass Pond
These are the measurements NY DEC publishes for Grass Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. Phosphorus 18 µg/L. Chlorophyll-a 4.1 µg/L. TSI 45.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 18µg/L | Fair GoodFairPoor |
| Chlorophyll-a (algae) | 4.1µg/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. | 45 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Grass Pond
Answers come straight from the public measurements and survey records on this page.
Lake Details
Max depth
~26 ft est.
Public access
Yes
Listed by NY DEC
Depth marked “est.” is a modeled maximum from GLOBathy (Khazaei et al. 2022, CC0), not a measured survey. New York has not published bathymetry for Grass Pond.
Lake Size & Watershed
Watershed (drainage) area
0 sq mi
HydroLAKES / HydroSHEDS
Surface area
25 acres
HydroLAKES / HydroSHEDS
Shoreline
1.3 mi
HydroLAKES / HydroSHEDS
Elevation
1,260 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 Grass Pond
Water Quality Trend: Stable
Based on 4 years of monitoring (2020–2023).
Phosphorus
Improving-1.1 µg/L/yr4 years
Chlorophyll-a
Worsening+0.7 µg/L/yr3 years
Nearby Lakes in Franklin County
Frequently asked questions about Grass Pond
Where is Grass Pond?
- Grass Pond is a lake in Franklin County, New York. Its water-quality measurements are published by NY DEC and shown on this page as reported.
What is the water quality of Grass Pond?
- Grass Pond in Franklin County, New York has water-quality measurements published by NY DEC, shown here as reported. Phosphorus: 18 µg/L. Chlorophyll-a (algae): 4.1 µg/L.
Is Grass Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
How deep is Grass Pond?
- No published bathymetric survey covers Grass 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.
Can I fish at Grass Pond?
- Public access to Grass Pond is listed as yes on the lake record. Seasons, size and bag limits, and whether you need a license are set by New York's fish and wildlife agency, so check its current regulations before you go.
Explore Grass Pond across LakeQuality
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Where this data comes from
7 measurements from 1 monitoring station, 2020–2023. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS New York Water Science Center
USGS-NY7 samples · 2020–2023
Analytical methods
- P, wu, WCA, persulfate CF color
- Chlorophyll a,fluorometric,uncor
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)