Prairie Cr. No. B-4-7 (o'conner)
Prairie Cr. No. B-4-7 (o'conner) is an earth dam located in Daviess County, Indiana, built in 1966. It carries a Low hazard potential classification and has a fair condition assessment.
About Prairie Cr. No. B-4-7 (o'conner)
The primary purpose of Prairie Cr. No. B-4-7 (o'conner) 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 Flat Creek near Montgomery-offstream.
The dam stands 30 feet tall and stretches 1,250 feet across, creates a reservoir covering 101 acres, has a maximum storage capacity of 4,260 acre-feet, and collects water from a drainage area of 12 square miles. Completed in 1966, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected 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 03/12/2016. That was over 10 years ago.
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Location
| State | Indiana |
| County | Daviess |
| Nearest City | Montgomery-offstream |
| River/Stream | Flat Creek |
| Coordinates | 38.67306, -87.02055 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 1,250 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 4,260 acre-ft |
| Max Storage | 4,260 acre-ft |
| Normal Storage | 360 acre-ft |
| Surface Area | 101 acres |
| Drainage Area | 12 sq mi |
| Max Discharge | 9,000 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | PRAIRIE CREEK DAVIESS CONSERVANCY DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 03/12/2016 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IN00089 |
| Federal ID | IN00089 |
| More Info | State Dam Safety Program |