Cold Brook Dam
High HazardNot Available ConditionEmergency Action Plan: Yes
Location
| State | South Dakota |
| County | Fall River |
| Nearest City | Hot Springs |
| River/Stream | Cold Brook |
| Coordinates | 43.45342, -103.48909 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 130 ft |
| Dam Length | 925 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 7,200 acre-ft |
| Max Storage | 7,200 acre-ft |
| Normal Storage | 520 acre-ft |
| Surface Area | 36 acres |
| Drainage Area | 71 sq mi |
| Max Discharge | 80,600 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | USACE - Omaha District |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 07/17/2025 |
| Emergency Action Plan | Yes |