Brant Lake is a cold, clear oligotrophic lake in Warren County, New York. Water quality is graded A based on 1 sampling years through 2020. Overall water quality is improving over recent sampling years. The lake supports 2 documented fish species including Brown Trout and Rainbow Trout. Public access is available with 1 public boat landing. Compared to the 8 other monitored lakes in Warren County, Brant Lake ranks #7 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-27. Grade methodology: LakeGrade methodology.
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Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 16.4 ft down. Trophic State Index: 37.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 16.4 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 37 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Brant Lake
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Fish Species
Click a species to see every graded lake where it is documented.
Fishing Brant Lake
Water Quality Trend: ↑ Improving
Based on 2 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↑ Improving | +5.95 m/yr | 2 |
Recreation & Access
Location
County Ranking
Ranked #7 of 9 lakes in Warren County
Nearby Lakes in Warren County
Explore Brant Lake across LakeGrade
Fish species and top-graded lakes across New York
Fish species and best lakes in Warren County
Species activity outlook by water temperature and season
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Where to stay at New York's top lakes, each with its grade
Low nutrients, clear water, excellent for swimming
New York's cleanest and most-polluted lakes, ranked
More New York Lake Rankings
Other Grade A Lakes in New York
Oligotrophic Lakes in New York
More records, surveys & data sources
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
Source: EPA ATTAINS assessment unit NY1104-0037 · Official waterbody report
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth is a modeled estimate.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grading methodology based on Metropolitan Council standards
Public boat-access points from the USGS National Boat Ramps inventory
Most recent sample: 2020-09-27
Monitoring stations: 1