Hamilton Street is a concrete gravity dam located in Allentown City, Pennsylvania, along the Lehigh River. Built in 1983 for recreational and water supply purposes, this dam stands at a height of 14 feet and spans 490 feet in length. Managed by the Pennsylvania Department of Environmental Protection, Hamilton Street is regulated, permitted, inspected, and enforced by state authorities to ensure its safe operation and compliance with regulations.

With a low hazard potential and a satisfactory condition assessment, Hamilton Street provides vital water storage of 50 acre-feet for the surrounding area. Despite its modest size, the dam plays a crucial role in recreation and water supply activities in Lehigh, Pennsylvania. The dam is subject to regular inspections every 5 years to maintain its integrity and safety, with the last inspection conducted in March 2021.

As a key structure along the Lehigh River, Hamilton Street demonstrates the importance of proper management and maintenance of water resources for both recreational and practical purposes. Climate and water resource enthusiasts can appreciate the intricate design and functionality of this dam, which serves as a valuable asset in the region's water management infrastructure.