Elm Lake Dam
High HazardSatisfactory Condition
Location
| State | South Dakota |
| County | Brown |
| Nearest City | WESTPORT |
| River/Stream | ELM RIVER |
| Coordinates | 45.85212, -98.70872 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 52 ft |
| Dam Height | 45 ft |
| Dam Length | 1,150 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 28,800 acre-ft |
| Max Storage | 28,800 acre-ft |
| Normal Storage | 15,200 acre-ft |
| Surface Area | 1,150 acres |
| Drainage Area | 292 sq mi |
| Max Discharge | 13,850 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | S&PL |
| Owner Type | State |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/22/2022 |