O'Shaughnessy
Dam in Delaware County, Ohio · Scioto River · forms O'shaughnessy Reservoir
Height
79 ft
24 m (NID height)
Length
1,510 ft
460 m
Completed
1924
O'shaughnessy Reservoir today
848.53 ft
7 days ▼ 0.02 ft
Normal storage
14,800 acre-ft
Reservoir level measured Oct 23, 2026, 3:00 PM EDT. Full level page →
Facts
- Purposes
- Water Supply; Recreation; Hydroelectric
- Dam type
- Gravity
- Structural height
- 79 ft
- Owner
- Columbus, City of (Local Government)
- Maximum storage
- 33,000 acre-ft
- Surface area
- 950 acres
- Hydraulic height
- 65 ft
- Drainage area
- 980 sq mi
- Spillway
- Uncontrolled, 802 ft wide
- Army Corps district
- Louisville District
- NID ID
- OH00751
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Aug 26, 2026. Search NID ID OH00751 at nid.sec.usace.army.mil. Project website.