O'Shaughnessy Dam

The O'Shaughnessy Dam is a large concrete structure built across the Scioto River to create a broad reservoir in the region. The dam includes a spillway system and extends across significant dimensions to hold and manage water flow.

The dam was built in the 1920s as a major infrastructure project to supply water to the expanding region. It represented a significant engineering achievement of that era and required substantial labor and resources to complete.

The dam supports the water supply system that shaped the region's development and is recognized as a significant engineering landmark. Visitors encounter a large reservoir that has become an integral part of the local landscape.

The site is accessible to visitors and located in an area near Dublin, Ohio with good access routes. You can view the dam and reservoir from various points and gain perspective on the region's water management system.

A hydroelectric facility was added to the dam decades after its original construction, turning the water flow into a source of power. This later addition transformed the structure into a dual-purpose installation serving both water supply and energy generation.

Location: Delaware County

Inception: 1922

Architects: Frank Packard

GPS coordinates: 40.15389,-83.12583

Latest update: December 9, 2025 18:48