Prairie Cr. No. A-2-4 is an earth dam located in Daviess County, Indiana, built in 1962. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 22 ft22 ft tall and 400 ft long. 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 Prairie Cr. No. A-2-4
The primary purpose of Prairie Cr. No. A-2-4 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Prairie Creek Daviess Conservancy District (local government). It impounds the Thompson Ditch near Washington.
The dam stands 22 feet tall and stretches 400 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 518 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1962, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 02/09/2019.
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Location
| State | Indiana |
| County | Daviess |
| Nearest City | Washington |
| River/Stream | Thompson Ditch |
| Coordinates | 38.79159, -87.03944 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 400 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 518 acre-ft |
| Max Storage | 518 acre-ft |
| Normal Storage | 509 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,018 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Prairie Creek Daviess Conservancy District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 02/09/2019 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00292 |
| Federal ID | IN00292 |
| More Info | State Dam Safety Program |