Course
Just south of its source at the foot of Lime Kiln Mountain, the Mahwah passes through the Ladentown Swamp, an extensive wetland area that is one of the last unspoiled aquifers in Rockland County, New York. As it runs south, the river's course is interrupted by numerous dams forming ponds and small lakes. At a number of points it runs through woodlands and remains in its original natural condition.
Approximately 4.5 mi (7.2 km) south of its source the river passes under Sky Meadow Lane and shortly thereafter enters a stretch where it is surrounded by Harriman State Park on both sides. Just south of this the river passes through Kakiat County Park and just beyond the park it passes under Route 202 from west to east.
Farther south the river enters Antrim Lake and immediately thereafter it passes under the New York State Thruway, flows through Suffern, south across the state boundary and into the Ramapo River in the town of Mahwah.
Read more about this topic: Mahwah River