Oahe Dam
Dam in Stanley County, South Dakota · Missouri River · forms Oahe Reservoir
Height
245 ft
75 m (NID height)
Length
9,300 ft
2,835 m
Completed
1966
Oahe Reservoir today
1,591.98 ft
7 days ▲ 0.17 ft
vs full pool
▼ 15.52 ft
Normal storage
19,300,000 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 2:00 PM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Irrigation; Navigation; Recreation; Hydroelectric
- Dam type
- Earth
- Structural height
- 245 ft
- Owner
- USACE - Omaha District (Federal)
- Maximum storage
- 23,600,000 acre-ft
- Surface area
- 376,000 acres
- Hydraulic height
- 200 ft
- Drainage area
- 243,490 sq mi
- Spillway
- Controlled, 456 ft wide
- Army Corps district
- Omaha District
- Also known as
- Lake Oahe
- NID ID
- SD01095
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Sep 30, 2026. Search NID ID SD01095 at nid.sec.usace.army.mil. Project website.