Union Creek No 12
Union Creek No 12 is an earth dam located in Union County, South Dakota, built in 1976. It carries a Low hazard potential classification.
About Union Creek No 12
The primary purpose of Union Creek No 12 is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Union Ck Watershed Dist. (local government). It impounds the W. Union Creek-tr near North Sioux City.
The dam stands 37 feet tall and stretches 650 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 59 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1976, the structure is 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.
At 37 feet, this dam is taller than 84% of dams nationwide.
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Location
| State | South Dakota |
| County | Union |
| Nearest City | North Sioux City |
| River/Stream | W. Union Creek-tr |
| Coordinates | 42.84696, -96.63664 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 650 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 59 acre-ft |
| Max Storage | 59 acre-ft |
| Normal Storage | 37 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 386 cfs |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | UNION CK WATERSHED DIST. |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02286 |
| Federal ID | SD02286 |
| More Info | State Dam Safety Program |