Rock Rapids Milldam
Iowa, Lyon County, ROCK RIVER
Location
| State | Iowa |
| County | Lyon |
| River | ROCK RIVER |
| Coordinates | 43.43700, -96.16690 |
Physical Characteristics
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 220 ft |
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Surface Area | 10 acres |
Safety Classification
| Hazard Potential | Low |
| Condition Assessment | Not Rated |
| EAP Status | Not Required |
| Last Inspection | October 18, 1989 |
| Inspection Frequency | - |
Dam Information
| Year Completed | 1931 |
| Primary Purpose | Water Supply |
| Dam Type | Gravity |
| Owner Type | Local Government |
| Owner | City of Rock Rapids |
Location Map
About This Dam Record
Dam safety data is maintained by the Army Corps of Engineers National Inventory of Dams (NID). High-hazard dams are those where failure could cause loss of life or major property damage downstream.