The Lehigh River is a tributary of the Delaware River located in eastern Pennsylvania. It flows approximately 109 miles through the Appalachian Mountains, providing a vital water source for the surrounding communities. The river is known for its scenic beauty and recreational opportunities, including fishing, kayaking, and hiking along its banks. Historically, the Lehigh River played a significant role in the region's industrial development, particularly during the coal and iron industries in the 19th century. Today, it is part of the Lehigh Gorge State Park, which attracts visitors for outdoor activities and offers a glimpse into the area's natural and cultural history.