Lake Sundown Dam
Lake Sundown Dam is an earth dam located in Appanoose County, Iowa, built in 1976. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lake Sundown Dam
The primary purpose of Lake Sundown Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Coves Of Sundown Lake Owners Association (private). It impounds the South Soap Creek near Floris.
The dam stands 51 feet tall and stretches 1,530 feet across, creates a reservoir covering 440 acres, has a maximum storage capacity of 12,640 acre-feet, and collects water from a drainage area of 21 square miles. Completed in 1976, the structure is 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 08/02/2023.
At 51 feet, this dam is taller than 93% of dams nationwide.
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Location
| State | Iowa |
| County | Appanoose |
| Nearest City | Floris |
| River/Stream | South Soap Creek |
| Coordinates | 40.83210, -92.72120 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 51 ft |
| Dam Height | 51 ft |
| Dam Length | 1,530 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 12,640 acre-ft |
| Max Storage | 12,640 acre-ft |
| Normal Storage | 5,740 acre-ft |
| Surface Area | 440 acres |
| Drainage Area | 21 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Coves of Sundown Lake Owners Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/02/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00098 |
| Federal ID | IA00098 |
| More Info | State Dam Safety Program |