Cold Brook Dam
Dam in Fall River County, South Dakota · Cold Brook · forms Cold Brook Reservoir
Height
130 ft
40 m (NID height)
Length
925 ft
282 m
Completed
1953
Cold Brook Reservoir today
3,585.21 ft
7 days ▲ 0.04 ft
vs full pool
▲ 0.21 ft
Normal storage
520 acre-ft
Above normal for the date
Reservoir level measured Oct 23, 2026, 9:00 AM CDT. Full level page →
Facts
- Purposes
- Flood Risk Reduction
- Dam type
- Earth
- Structural height
- 130 ft
- Owner
- USACE - Omaha District (Federal)
- Maximum storage
- 7,200 acre-ft
- Surface area
- 36 acres
- Hydraulic height
- 122 ft
- Drainage area
- 71 sq mi
- Spillway
- Uncontrolled, 200 ft wide
- Army Corps district
- Omaha District
- Also known as
- Cold Brook Lake
- NID ID
- SD01097
Facts from the U.S. Army Corps of Engineers National Inventory of Dams, record updated Apr 20, 2026. Search NID ID SD01097 at nid.sec.usace.army.mil. Project website.