River PA NJ NY

Wallkill River

Name: Wallkill River
Address: PA, US

Pennsylvania • 41.3029, -74.4743

Length

92 mi

147 km

Elevation

773′ → 10′

763 ft drop

Stream Order

Large River

Slope

0.16%

8.3 ft/mi

Drainage

772 mi²

1,999 km²

Avg Flow

1,339 cfs

2.8 mph velocity

Path to Mouth

227 mi

366 km to ocean

Classification

Headwater

Source Stream

Elevation Profile

Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

Data from USGS & NOAA for informational purposes only. More

Access Sites on Wallkill River