Shadehill Dam
Dam in Perkins County, South Dakota · Grand River · forms Shadehill Reservoir
Height
145 ft
44 m (NID height)
Length
12,843 ft
3,915 m
Completed
1951
Shadehill Reservoir today
2,265.12 ft
7 days ▼ 0.14 ft
vs full pool
▼ 6.88 ft
Normal storage
139,674 acre-ft
Normal for the date
Reservoir level measured Oct 23, 2026, 12:00 PM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction; Irrigation; Recreation
- Dam type
- Earth
- Structural height
- 145 ft
- Owner
- BUREAU OF RECLAMATION (Federal)
- Maximum storage
- 468,585 acre-ft
- Surface area
- 9,900 acres
- Hydraulic height
- 114 ft
- Drainage area
- 2,991 sq mi
- Spillway
- Uncontrolled
- Army Corps district
- St. Paul District
- Also known as
- Shadehill Reservoir
- NID ID
- SD01141
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Oct 6, 2026. Search NID ID SD01141 at nid.sec.usace.army.mil. Project website.
Other dams at Shadehill Reservoir
- Shadehill Dike 2
- Shadehill Dike 1