New Underwood
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Pennington |
| Nearest City | NEW UNDERWOOD |
| River/Stream | BOX ELDER CREEK-TR |
| Coordinates | 44.10533, -102.84076 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 164 acre-ft |
| Max Storage | 164 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 59 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 380 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | GF&P |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 04/19/2023 |
| Emergency Action Plan | Not Required |