Corydon Reservoir Dam is an earth dam located in Wayne County, Iowa, built in 1974. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 26 ft26 ft tall and 750 ft long, taller than 55% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Corydon Reservoir Dam
The primary purpose of Corydon Reservoir Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City of Corydon (local government). It impounds the Tr-west Jackson Creek near Corydon.
The dam stands 26 feet tall and stretches 750 feet across, creates a reservoir covering 66 acres, has a maximum storage capacity of 870 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1974, 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 08/08/2023.
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Location
| State | Iowa |
| County | Wayne |
| Nearest City | Corydon |
| River/Stream | Tr-west Jackson Creek |
| Coordinates | 40.74990, -93.33140 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 750 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 870 acre-ft |
| Max Storage | 870 acre-ft |
| Normal Storage | 420 acre-ft |
| Surface Area | 66 acres |
| Drainage Area | 2 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Corydon |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/08/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01641 |
| Federal ID | IA01641 |
| More Info | State Dam Safety Program |