Pipestem Dam, also known as Pipestem Lake, in Jamestown, North Dakota, is a federal-owned structure managed by the US Army Corps of Engineers.
Wind
Humidity
Completed in 1974, the earth dam primarily serves the purpose of flood risk reduction along Pipestem Creek. With a hydraulic height of 99 feet and a structural height of 110 feet, the dam has a storage capacity of 181,650 acre-feet and covers a surface area of 855 acres. Despite its reliability in reducing floods, the dam poses a high hazard potential due to the downstream consequences in Jamestown and Lamoure from potential spillway damage during extreme events.
To mitigate risks, the USACE is actively implementing measures to enhance the dam's safety. A Dam Safety Modification Study conducted in 2020 identified the need for spillway modifications, scheduled to begin in 2023 and conclude by the end of 2026. These modifications aim to make the spillway more resistant to erosion during large water releases, thereby reducing the likelihood of catastrophic flooding in downstream communities. Additionally, the USACE encourages the public to stay informed about flood risks, monitor weather forecasts, and have evacuation plans in place to minimize individual risks during flood events.
Year Completed |
1974 |
Dam Length |
4000 |
River Or Stream |
PIPESTEM CREEK |
Primary Dam Type |
Earth |
Surface Area |
855 |
Hydraulic Height |
99 |
Drainage Area |
594 |
Nid Storage |
181650 |
Structural Height |
110 |
Outlet Gates |
Uncontrolled - 0 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
110 |