O'Shaughnessy Dam (Ohio)
O'Shaughnessy Dam and Bridge
View below the dam
|Location||Concord Township / Liberty Township, Delaware County, Ohio, USA|
|Nearest city||Shawnee Hills, Ohio|
|Built by||Thompson-Starrett Co.|
|Architectural style||Late 19th and 20th Century Revivals, Classical Revival, Second Renaissance Revival|
|NRHP Reference #||90000482|
|Added to NRHP||July 5, 1990|
The O'Shaughnessy Dam is located on the Scioto River near Dublin, Ohio, United States. The dam forms O'Shaughnessy Reservoir, which is a major source of drinking water for the city of Columbus. It was completed in 1925 following recommendations of then superintendent Jerry O'Shaughnessy (for whom the dam was named). At the time, the reservoir was described as "the finest inland waterway in the United States." Located 10 miles (16 km) upstream of the smaller Griggs Dam, it provides a large area for various forms of recreation in addition to its water supply duties. The reservoir holds 6.3 billion US gallons (24,000,000 m3) over a surface area of 845 acres (3.42 km2). The Columbus Zoo and Aquarium is located on the east bank of the reservoir, near the dam.
The city of Columbus installed a hydroelectric operation on the west side of the dam, which was completed in 1987. The turbines can only be operated when there is sufficient flow, which means the dam cannot continuously produce electricity. With a head of 18 feet (5.5 m), the two turbines together produce 5 megawatts.
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