It is drained by the Lehigh River, which forms its natural eastern boundary.

Greenleaf also helped promoted the construction of a bridge across the Lehigh River.

At the time, anthracite was transported by boat down the Lehigh River.

The lake is the origin of the Lehigh River.

Near the southern terminus, the trail runs along the Lehigh River for several miles.

The trail follows an abandoned railroad corridor along the Lehigh River.

In the past, it developed early industries because of water power from the Lehigh River.

The Lehigh River was a source of water power for developing industries in the 19th century.

It is also sometimes referred to as the Little Lehigh River.

Plans exist to complete the road by building a bridge over the Lehigh River, with completion expected in 2014.