Decorah Upper Milldam
Low HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | Iowa |
| County | Winneshiek |
| Nearest City | LANSING |
| River/Stream | UPPER IOWA RIVER |
| Coordinates | 43.32210, -91.68650 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 300 ft |
| Year Completed | 1911 (115 years old) |
Storage & Hydraulics
| NID Storage | 358 acre-ft |
| Max Storage | 358 acre-ft |
| Normal Storage | 283 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 568 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Iowa Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 10/01/2003 |
| Emergency Action Plan | Not Required |