Brant Lake
Warren County, New YorkView mapDirections
NY DEC publishes the water-quality measurements for Brant Lake. Here is what has been measured.
- Impaired · Oxygen depletion (low DO)
- Limited data
Brant Lake in Warren County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 16.4 ft visibility.
Brant Lake is a lake in Warren County, New York. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, NYSDEC, last sampled 2021-10-06. Methodology: how these readings are compared.
What Brant Lake is good for
From access and monitoring records, not editorial picks.
- Clear water16.4 ft of visibility
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Brant Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
Whether Brant Lake 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 Brant Lake
These are the measurements NY DEC publishes for Brant Lake, 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 16.4 ft down. TSI 37.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 16.4ft | 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. | 37 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Brant Lake
Answers come straight from the public measurements and survey records on this page.
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Stays near Brant Lake
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Fishing Brant Lake
Water quality readings over time
2 seasons of samples on record (2020–2021). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Improving2 years
EPA Impairment Status
Brant Lake is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Aquatic life.
Source: EPA ATTAINS assessment unit NY1104-0037 · Official waterbody report
Nearby Lakes in Warren County
Frequently asked questions about Brant Lake
Where is Brant Lake?
- Brant Lake is a lake in Warren 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 Brant Lake?
- Brant Lake in Warren County, New York has water-quality measurements published by NY DEC, shown here as reported. Water clarity: 16.4 ft visibility.
Is Brant Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Brant Lake is listed impaired under Clean Water Act §303(d) (IR 5) for oxygen depletion (low DO). Check local advisories before you swim.
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Where this data comes from
6 measurements from 1 monitoring station, 2021. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS New York Water Science Center
USGS-NY6 samples · 2021
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
Impairment status from EPA ATTAINS 303(d) database