Gallagher is a significant water resource infrastructure located in Lexington, Nebraska, constructed in 1941 for hydroelectric and irrigation purposes. Managed by the Federal Energy Regulatory Commission, this earth dam stands at 54 feet high and spans 644 feet in length, with a storage capacity of 3,600 acre-feet and a drainage area of 10.5 square miles. The dam's low hazard potential and moderate risk assessment make it a crucial asset for water management in the region.

Owned by a public utility and regulated by the Nebraska Department of Natural Resources, Gallagher plays a vital role in water supply and control in Dawson County. The dam's primary purpose is to generate hydroelectric power and facilitate irrigation activities, highlighting its importance in sustaining agricultural operations and local communities. With a history of federal oversight and periodic inspections, Gallagher exemplifies responsible water resource management and climate resilience efforts in the face of changing environmental conditions.

Gallagher's location on the Supply Canal and its association with the Federal Energy Regulatory Commission underscore its strategic significance in the Kansas City District. Despite its low hazard potential, ongoing risk assessments and management measures ensure the dam's continued safe operation and readiness for potential emergencies. Water resource and climate enthusiasts can appreciate Gallagher as a testament to effective infrastructure management and the essential role of dams in supporting sustainable water usage and energy generation in Nebraska.