Watershed Profile: Trout Brook near McGraw, NY

Watershed Overview
Trout Brook flows west into the Tioughnioga River near McGraw, NY. The entire watershed is contained within central Cortland County, NY. The monitoring station is located west of McGraw, NY near the confluence with the Tioughnioga River.
Drainage Characteristics
  • Drainage Area (square miles): 35.65
  • Total Stream Length (miles): 63.2
  • Average Annual Flow at Station (NHD) (cfs): 61.4
  • Population (2020): 1,702
Stream Classifications (New York)
Classification Use Miles
Class C Support Fisheries (Non-Contact) 34.51
Class C (T) Support Fisheries, Non-Contact With Trout Population 15.54
Class C (TS) Support Fisheries, Non-Contact With Trout Spawning 13.13
Total 63.18
  • Land Use
  • Description Percentage
    Water 0.35
    Developed Open Space 4.09
    Low Urban 1.10
    Medium Urban 0.26
    High Urban 0.03
    Barren 0.40
    Deciduous Forest 53.05
    Coniferous Forest 2.91
    Mixed Forest 5.49
    Shrub Scrub 0.52
    Grassland Herbaceous 1.14
    Pasture/Hay 26.53
    Cropland 2.58
    Wetlands 1.54
Underlying Geology
Rock Type Percentage
Shale 100.00
Recent Results
Sample Time 6/13/2024 4:00:00 AM
Temperature  (C) 12.49
Specific Conductivity  (mS/cm) 0.158
PH 7.69
Turbidity  (NTU+) 3.79
Dissolved Oxygen  (mg/L) 9.58
Dissolved Oxygen (last month of readings)
pH (last month of readings)
Specific Conductivity (last month of readings)
Temperature (last month of readings)
Turbidity (last month of readings)
Natural Gas
  • Natural Gas Pads 0
  • Natural Gas Water Withdrawals 0
Public Water Supply Withdrawals
  • Groundwater 4
  • Surface Water 0
NPDES Discharges
Description Count
Concentrated Animal Feeding Operation 0
Mining/Quarry 0
Stormwater 1
Wastewater Treatment Plant/Sewage Treatment Plant 0
Other 0