Deer River Flow Lake is a 403-acre productive, nutrient-rich eutrophic lake in Franklin County, New York. Water quality is graded F based on 1 sampling years through 2020. Compared to the 8 other monitored lakes in Franklin County, Deer River Flow Lake ranks #9 for water quality.
Source: EPA Water Quality Portal sampling records, New York DNR, last sampled 2020-09-26. Grade methodology: LakeGrade methodology.
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Swimming Safety
Avoid swimming, very poor water quality, potential algae toxins
Water Quality Grade: F, Very Poor
Very murky, less than 3.3 ft of visibility. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.3 ft | F |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 403 acres |
Where to stay near Deer River Flow Lake
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Fishing Deer River Flow Lake
Location
County Ranking
Ranked #9 of 9 lakes in Franklin County
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High nutrients, frequent algae, reduced clarity
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Reservoir Info (USACE NID)
Deer River Flow Lake is a man-made reservoir impounded by the Deer River Flow Dam (completed 1904), built primarily for recreation on the DEER RIVER; concrete-type dam, 10 ft tall and 300 ft long.
- Surface area
- 403 ac
- Normal storage
- 1,344 ac-ft
- Max storage
- 1,344 ac-ft
- Drainage area
- 28.3 sq mi
- Hazard class
- Low
- Owner
- NYS DEC
Source: USACE National Inventory of Dams, NID ID NY01115 · Operator website
EPA Impairment Status
Deer River Flow 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 NY0902-0011 · Official waterbody report · Matched by proximity (2.89 km)
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
Most recent sample: 2020-09-26
Monitoring stations: 1