Sun Valley Lake Dam
Sun Valley Lake Dam is an earth dam located in Ringgold County, Iowa, built in 1971. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Sun Valley Lake Dam
Sun Valley Lake Dam is a dam in Ringgold, Iowa. The dam is owned by Sun Valley Iowa Lake Association (private). It impounds the Tr-sand Creek near Westerville.
The dam stands 67 feet tall and stretches 1,565 feet across, creates a reservoir covering 370 acres, has a maximum storage capacity of 11,940 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1971, 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 07/20/2021.
At 67 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | Iowa |
| County | Ringgold |
| Nearest City | Westerville |
| River/Stream | Tr-sand Creek |
| Coordinates | 40.86370, -94.05970 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 67 ft |
| Dam Height | 67 ft |
| Dam Length | 1,565 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 11,940 acre-ft |
| Max Storage | 11,940 acre-ft |
| Normal Storage | 7,370 acre-ft |
| Surface Area | 370 acres |
| Drainage Area | 5 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Sun Valley Iowa Lake Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/20/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA00973 |
| Federal ID | IA00973 |
| More Info | State Dam Safety Program |