Long Pond
Columbia County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Long Pond. Here is what has been measured.
- Limited data
Long Pond in Columbia County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 10.2 ft visibility.
Long Pond is a lake in Columbia County, New York.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2020-09-22. Methodology: how these readings are compared.
What Long Pond is good for
From access and monitoring records, not editorial picks.
- Clear water10.2 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Long 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 Long Pond
These are the measurements NY DEC publishes for Long Pond, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 10.2 ft. TSI 44.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 10.2ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 44 | Mesotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Moderate nutrients, good water quality
Ask about Long Pond
Answers come straight from the public measurements and survey records on this page.
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Fishing Long Pond
Regulated Pollution Sources Nearby
3 EPA-permitted facilities operate within about 5 miles of Long Pond under Clean Water Act (NPDES) discharge permits, including 1 classified by the EPA as major discharger. 3 facilities have a reported Clean Water Act violation in the past three years.
- Ancram MillAncram · 2.6 mi away · NPDES NY0006157MajorRecent violation
- Simons General StoreAncram · 2.7 mi away · NPDES NY0282448Recent violation
- Town Highway GarageAncramdale · 3.8 mi away · NPDES NY0282430Recent violation
Facilities permitted to discharge under the Clean Water Act within ~5 miles; proximity does not by itself mean a facility affects this lake. Source: EPA ECHO (ICIS-NPDES), as of 2026-07.
Nearby Lakes in Columbia County
Frequently asked questions about Long Pond
Where is Long Pond?
- Long Pond is a lake in Columbia 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 Long Pond?
- Long Pond in Columbia County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 10.2 ft visibility.
Is Long Pond safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Explore Long Pond across LakeQuality
3 documented falls within 22.4 mi, nearest Bash Bish Falls
Species activity outlook by water temperature and season
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Where this data comes from
8 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- North American Lake Management Society
NALMS8 samples · 2020
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
Regulated discharger data from EPA ECHO (ICIS-NPDES)