Lake Miami Dam
Lake Miami Dam is an earth dam located in Monroe County, Iowa, built in 1966. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lake Miami Dam
The primary purpose of Lake Miami 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 Tr-bluff Creek near Lakonta.
The dam stands 32 feet tall and stretches 1,178 feet across, creates a reservoir covering 140 acres, has a maximum storage capacity of 2,300 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1966, the structure is well into its service life at over 50 years old.
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 08/29/2022.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Iowa |
| County | Monroe |
| Nearest City | Lakonta |
| River/Stream | Tr-bluff Creek |
| Coordinates | 41.12240, -92.84320 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 1,178 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 2,300 acre-ft |
| Max Storage | 2,300 acre-ft |
| Normal Storage | 1,720 acre-ft |
| Surface Area | 140 acres |
| Drainage Area | 6 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 | 08/29/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00807 |
| Federal ID | IA00807 |
| More Info | State Dam Safety Program |