Cole South Road Dam is an earth dam located in Otoe County, Nebraska, built in 1998. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 31 ft31 ft tall and 726 ft long, taller than 72% 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 Cole South Road Dam
The primary purpose of Cole South Road Dam 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 Nemaha Natural Resources District (local government). It impounds the Tr-rock Creek near Julian.
The dam stands 31 feet tall and stretches 726 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 249 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1998, the structure is 28 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/16/2023.
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Location
| State | Nebraska |
| County | Otoe |
| Nearest City | Julian |
| River/Stream | Tr-rock Creek |
| Coordinates | 40.52878, -95.89703 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 28 ft |
| Dam Length | 726 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 249 acre-ft |
| Max Storage | 249 acre-ft |
| Normal Storage | 88 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 270 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/16/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02501 |
| Federal ID | NE02501 |
| More Info | State Dam Safety Program |