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Grays Run Watershed Profile

Grays Run Station

Watershed Overview

Grays Run begins in northern Lycoming County and flows south through Loyalsock State Forest until its confluence with Lycoming Creek near the town of Gray, Pennsylvania.  The monitoring station along Grays Run is located north of Gray, Pennsylvania, near the Dry Run road bridge crossing.

Drainage Characteristics

Monitored Drainage Area: 16.2 square miles

Population (2010): 160

Total Stream Length: 24.6 miles

Stream miles impaired and dominant source/cause:

Average Annual Flow at Station (NHD): 30.4 cubic feet per second (cfs)

Maximum Flow Time from Headwaters: 10 hrs. 21 min.

Grays Run Watershed Map

Land Use (2006):

Natural Gas Drilling Pads (as tracked by SRBC): 9

Permitted Natural Gas Water Withdrawals: 0 Frac Water Withdrawals

Public Water Supply: 0 Groundwater Withdrawals and 0 Surface Water Withdrawals

Permitted Discharges and Type (NPDES sites):

Underlying Geology: Sandstone, Interbedded Sedimentary