Lehigh River

Total streamflow across the Lehigh River was last observed at 8,996 cfs, and is expected to yield approximately 17,843 acre-ft of water today; about 80% of normal. Average streamflow for this time of year is 11,240 cfs, with recent peaks last observed on 2021-09-02 when daily discharge volume was observed at 176,670 cfs.

Maximum discharge along the river is currently at the Lehigh River At Bethlehem reporting a streamflow rate of 2,450 cfs. However, the streamgauge with the highest stage along the river is the Lehigh River At Glendon with a gauge stage of 8.48 ft. This river is monitored from 6 different streamgauging stations along the Lehigh River, the highest being situated at an altitude of 1,461 ft, the Lehigh River At Stoddartsville.

It is a primary tributary of the Delaware River and has a significant historical background, as it played a vital role in the industrial development of the Lehigh Valley in the 19th century. The river is fed by many small streams, and its watershed covers an area of about 1,360 square miles. There are several dams and reservoirs built along the river, including the Francis E. Walter Dam, which serves as a flood control and hydroelectric facility. The river is used for various recreational activities, including whitewater rafting, fishing, and kayaking. Additionally, the river is used for agricultural purposes, such as irrigation and grazing. The Lehigh River is a vital natural resource for the region, and it continues to serve as an essential economic, recreational, and ecological asset.