Dry Creek South 3-a is an earth dam located in Red Willow County, Nebraska, built in 1964. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 42 ft42 ft tall and 667 ft long, taller than 88% 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 Dry Creek South 3-a
The primary purpose of Dry Creek South 3-a 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 Middle Republican Natural Resources District (local government). It impounds the Tr-dry Creek near Mccook.
The dam stands 42 feet tall and stretches 667 feet across, creates a reservoir covering 16 acres, has a maximum storage capacity of 840 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1964, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/18/2023.
At 42 feet, this dam is taller than 88% of dams nationwide.
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Location
| State | Nebraska |
| County | Red Willow |
| Nearest City | Mccook |
| River/Stream | Tr-dry Creek |
| Coordinates | 40.09408, -100.63887 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 37 ft |
| Dam Length | 667 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 840 acre-ft |
| Max Storage | 840 acre-ft |
| Normal Storage | 72 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 1,017 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Middle Republican Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/18/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00560 |
| Federal ID | NE00560 |
| More Info | State Dam Safety Program |