Lake Macbride Dam
Lake Macbride Dam is an earth dam located in Johnson County, Iowa, built in 1930. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lake Macbride Dam
The primary purpose of Lake Macbride Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Iowa Department Of Natural Resources (state). It impounds the Mill Creek near Coralville Reservoir.
The dam stands 56 feet tall and stretches 900 feet across, creates a reservoir covering 950 acres, has a maximum storage capacity of 28,000 acre-feet, and collects water from a drainage area of 27 square miles. Completed in 1930, the structure is well-established, with more than 75 years of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/10/2020.
At 56 feet, this dam is taller than 94% of dams nationwide.
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Location
| State | Iowa |
| County | Johnson |
| Nearest City | Coralville Reservoir |
| River/Stream | Mill Creek |
| Coordinates | 41.79370, -91.57520 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 56 ft |
| Dam Height | 56 ft |
| Dam Length | 900 ft |
| Year Completed | 1930 (96 years old) |
Storage & Hydraulics
| NID Storage | 28,000 acre-ft |
| Max Storage | 28,000 acre-ft |
| Normal Storage | 15,750 acre-ft |
| Surface Area | 950 acres |
| Drainage Area | 27 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Iowa Department of Natural Resources |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/10/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01352 |
| Federal ID | IA01352 |
| More Info | State Dam Safety Program |