Bismark Lake
High HazardNot Rated ConditionEmergency Action Plan: Yes
Location
| State | South Dakota |
| County | Custer |
| Nearest City | NORBECK WILDLIFE PRESERVE |
| River/Stream | BISMARK CREEK |
| Coordinates | 43.77533, -103.51530 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 38 ft |
| Dam Length | 280 ft |
| Year Completed | 1937 (89 years old) |
Storage & Hydraulics
| NID Storage | 626 acre-ft |
| Max Storage | 626 acre-ft |
| Normal Storage | 297 acre-ft |
| Drainage Area | 4 sq mi |
| Max Discharge | 2,087 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | USDA FS |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Rated |
| Last Inspection | 09/27/2019 |
| Emergency Action Plan | Yes |