Marble Rock Milldam
Low HazardNot Rated ConditionEmergency Action Plan: Not Required
Location
| State | Iowa |
| County | Floyd |
| Nearest City | MARBLE ROCK |
| River/Stream | SHELL ROCK RIVER |
| Coordinates | 42.96530, -92.87090 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 187 ft |
| Year Completed | 1913 (113 years old) |
Storage & Hydraulics
| NID Storage | 836 acre-ft |
| Max Storage | 836 acre-ft |
| Normal Storage | 836 acre-ft |
| Surface Area | 110 acres |
| Drainage Area | 1,318 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Marble Rock |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 12/12/1989 |
| Emergency Action Plan | Not Required |