Watershed Profile: Hammer Creek near Route 322

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Watershed Overview
Hammer Creek originates in Lebanon County, PA and flows southeast until its confluence with Cocalico Creek in Lancaster County, PA. The monitoring station is located in Lancaster County, PA near the Lebanon County, PA line.
Drainage Characteristics
  • Drainage Area (square miles): 15.62
  • Total Stream Length (miles): 23.10
  • Average Annual Flow at Station (NHD) (cfs): 23.40
  • Population (2010): 3356
Stream Classifications (Pennsylvania)
Designation Miles
Cold Water Fisheries 17.43
High-Quality Cold Water Fisheries 5.65
Total 23.08
  • Land Use
  • Description Percentage
    Water 0.07
    Developed Open Space 6.76
    Low Urban 3.82
    Medium Urban 1.39
    High Urban 0.60
    Barren 0.01
    Deciduous Forest 34.31
    Coniferous Forest 0.08
    Mixed Forest 3.21
    Shrub Scrub 0.01
    Grassland Herbaceous 0.16
    Pasture/Hay 12.49
    Cropland 36.92
    Wetlands 0.17

  • Natural Gas
  • Natural Gas Pads 0
  • Natural Gas Water Withdrawals 0

  • Public Water Supply Withdrawals
  • Groundwater 6
  • Surface Water 0

NPDES Discharges
Description Count
Concentrated Animal Feeding Operation 4
Mining/Quarry 0
Stormwater 0
Wastewater Treatment Plant/Sewage Treatment Plant 0
Other 0

Stream Impairments
Source Category Miles
Agriculture Aquatic Life 15.80
Source Unknown Recreational 20.30
Underlying Geology
Rock Type Percentage
Conglomerate 19.17
Dolomite 13.00
Limestone 32.28
Other 2.20
Sandstone 31.06
Shale 2.27
Map
Recent Results
Sample Time 11/21/2024 5:00:00 PM
Temperature  (C) 9.47
Specific Conductivity  (mS/cm) 0.436
PH 9.55
Turbidity  (NTU+) 4.84
Dissolved Oxygen  (mg/L) 11.28
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)