Watershed Profile: Deer Creek in Rocks State Park
Watershed Overview
Deer Creek beginnings in York County, PA, and flows southeast through Baltimore and Harford Counties in Maryland before entering the Susquehanna River about three miles downstream of the Conowingo Dam. The continuous instream monitoring station is located in Rocks State Park about 25 miles upstream of the confluence with the Susquehanna River.
Drainage Characteristics
- Drainage Area (square miles): 89.98
- Total Stream Length (miles): 170.5
- Average Annual Flow at Station (NHD) (cfs): 120.0
- Population (2020): 18,248
Stream Classifications (Pennsylvania)
Designation | Miles |
---|---|
Cold Water Fisheries | 50.19 |
Total | 50.19 |
Stream Classifications (Maryland)
Designation | Miles |
---|---|
Use Class III-P | 105.07 |
Use Class IV-P | 15.20 |
Total | 120.27 |
- Land Use
-
Description Percentage Water 0.11 Developed Open Space 9.02 Low Urban 2.39 Medium Urban 0.80 High Urban 0.29 Barren 0.01 Deciduous Forest 29.86 Coniferous Forest 0.27 Mixed Forest 5.47 Shrub Scrub 0.71 Grassland Herbaceous 0.17 Pasture/Hay 16.36 Cropland 33.97 Wetlands 0.54
Underlying Geology
Rock Type | Percentage |
---|---|
Other | 100.00 |
Map
Recent Results
Sample Time | 12/8/2024 10:45:00 PM |
---|---|
Temperature (C) | 3.11 |
Specific Conductivity (mS/cm) | 0.2 |
PH | 7.29 |
Turbidity (NTU+) | 5.97 |
Dissolved Oxygen (mg/L) | 12.93 |
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 47
- Surface Water 0
NPDES Discharges
Description | Count |
---|---|
Stormwater | 11 |
Wastewater Treatment Plant/Sewage Treatment Plant | 2 |
Other | 9 |
Stream Impairments
Source | Category | Miles |
---|---|---|
Agriculture | Aquatic Life | 14.21 |
Habitat Modification | Aquatic Life | 6.99 |
Source Unknown | Aquatic Life | 6.55 |
Urban Runoff/Storm Sewers | Aquatic Life | 17.89 |