Rahn Lake Dam
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | South Dakota |
| County | Tripp |
| Nearest City | NONE |
| River/Stream | Keya Paha River-TR |
| Coordinates | 43.10346, -99.83496 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 570 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 891 acre-ft |
| Max Storage | 891 acre-ft |
| Normal Storage | 320 acre-ft |
| Max Discharge | 2,000 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | GF&P |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 12/21/2023 |
| Emergency Action Plan | Not Required |