Hoffman Dam
Low Hazard ConditionEmergency Action Plan: Not Required
Location
| State | Iowa |
| County | Dubuque |
| Nearest City | Graf |
| River/Stream | Little Maquoketa R |
| Coordinates | 42.46910, -90.91090 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 400 ft |
| Year Completed | 2022 (4 years old) |
Storage & Hydraulics
| NID Storage | 49 acre-ft |
| Max Storage | 49 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 245 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Ashley Hoffman |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |