Corning Reservoir Dam is an earth dam located in Adams County, Iowa, built in 1917. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 575 ft long, taller than 68% 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 Corning Reservoir Dam
The primary purpose of Corning Reservoir Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Corning Municipal Utilities (local government). It impounds the Tr-east Nodaway River near Corning.
The dam stands 30 feet tall and stretches 575 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 315 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1917, the structure is over a century 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 08/30/2021.
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Location
| State | Iowa |
| County | Adams |
| Nearest City | Corning |
| River/Stream | Tr-east Nodaway River |
| Coordinates | 41.00100, -94.72620 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 575 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 315 acre-ft |
| Max Storage | 315 acre-ft |
| Normal Storage | 220 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Corning Municipal Utilities |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/30/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01333 |
| Federal ID | IA01333 |
| More Info | State Dam Safety Program |