Kiewit No.
1, located in Wyoming along the East Pass Creek, is a privately owned earth dam primarily used for irrigation purposes. Completed in 1964, this dam stands at a height of 30 feet and has a storage capacity of 158 acre-feet. With a surface area of 11 acres, Kiewit No. 1 plays a vital role in water resource management in the region.
Despite being classified as a low hazard potential structure with a fair condition assessment, Kiewit No. 1 is subject to state regulation, inspection, and enforcement to ensure its continued safety and functionality. The dam features an uncontrolled spillway with a width of 55 feet and a single slide gate for outlet control. With its hydraulic height matching its structural height at 28 feet, Kiewit No. 1 presents a moderate risk that is continuously monitored and managed by relevant authorities.
Operated under the jurisdiction of the Wyoming State Engineer's Office, Kiewit No. 1 serves as a critical component of the local irrigation infrastructure. With its historical significance dating back to the mid-20th century, this earth dam remains integral to the agricultural activities in the region, showcasing the intersection of water resource management, climate considerations, and sustainable development practices.
Wind
Humidity
Year Completed |
1964 |
Dam Length |
1200 |
Dam Height |
28 |
River Or Stream |
EAST PASS CREEK |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
28 |
Nid Storage |
158 |
Structural Height |
30 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
30 |
West Pass Creek Near Parkman
|
10cfs |
East Pass Creek Near Dayton
|
12cfs |
Little Bighorn River At State Line Nr Wyola Mt
|
65cfs |
Tongue River Near Dayton
|
48cfs |
Tongue River At Monarch
|
383cfs |
Goose Creek Near Acme
|
123cfs |