Wild Rice Creek No. 7
Wild Rice Creek No. 7 is an earth dam located in Marshall County, South Dakota, built in 1960. It carries a Low hazard potential classification.
About Wild Rice Creek No. 7
The primary purpose of Wild Rice Creek No. 7 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 Wild Rice Creek Watershed District (local government). It impounds the Tr- Wild Rice Creek near Cayuga Nd.
The dam stands 36 feet tall and stretches 916 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 360 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1960, 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.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | South Dakota |
| County | Marshall |
| Nearest City | Cayuga Nd |
| River/Stream | Tr- Wild Rice Creek |
| Coordinates | 45.83921, -97.59705 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 916 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 360 acre-ft |
| Max Storage | 360 acre-ft |
| Normal Storage | 232 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,222 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | WILD RICE CREEK WATERSHED DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02260 |
| Federal ID | SD02260 |
| More Info | State Dam Safety Program |