Maximum discharge along the river is currently at the reporting a streamflow rate of cfs. This is also the highest stage along the Patapsco River, with a gauge stage of ft at this location. This river is monitored from 1 different streamgauging stations along the Patapsco River, the highest being situated at an altitude of ft, the .

The Patapsco River is a major tributary of the Chesapeake Bay in Maryland, USA. It has a total length of 39 miles and originates from the west of Ellicott City, Maryland. The river played an important role in the industrial revolution and was home to numerous mills and factories. In the present day, the Patapsco River is a popular destination for recreational activities like fishing, kayaking, and hiking. The river has several reservoirs and dams, including the Liberty Reservoir, which provides drinking water for Baltimore City. The Patapsco River is also used for agricultural purposes like irrigation and livestock watering. Despite its historical significance, the river has faced pollution and restoration efforts have been made to improve water quality.