Manchester Milldam
Low HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | Iowa |
| County | Delaware |
| Nearest City | MANCHESTER |
| River/Stream | MAQUOKETA RIVER |
| Coordinates | 42.48190, -91.45840 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 201 ft |
| Year Completed | 1905 (121 years old) |
Storage & Hydraulics
| NID Storage | 395 acre-ft |
| Max Storage | 395 acre-ft |
| Normal Storage | 395 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 268 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Alliant Power Co |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 10/25/1989 |
| Emergency Action Plan | Not Required |