Mcninch No.
Wind
Humidity
1, also known as Enl of 5413r, is a private irrigation dam located in Sublette, Wyoming, specifically in the city of Big Piney. Built in 1947, this earth dam stands at a height of 33 feet with a hydraulic height of 28 feet, serving the primary purpose of irrigation. The dam boasts a storage capacity of 1,620 acre-feet, with a normal storage capacity of 1,086 acre-feet across its 1.5 square mile drainage area.
With a low hazard potential and fair condition assessment as of August 2020, this structure has been subject to regular inspections every five years to ensure its operational safety. The dam features an uncontrolled spillway with a width of 18 feet, along with a slide (sluice gate) outlet gate. Despite its moderate risk rating, Mcninch No. 1 remains a vital asset for water resource management in the region, highlighting the importance of maintaining and monitoring such essential infrastructure.
Year Completed |
1947 |
Dam Length |
1150 |
Dam Height |
33 |
River Or Stream |
BEAVER CREEK OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
107 |
Hydraulic Height |
28 |
Drainage Area |
1.5 |
Nid Storage |
1620 |
Structural Height |
33 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
33 |
New Fork River Near Big Piney
|
295cfs |
Green River Near La Barge
|
681cfs |
Green River At Warren Bridge
|
206cfs |
Fontenelle C Nr Herschler Ranch
|
33cfs |
Smiths Fork Near Border
|
68cfs |
Pine Creek Above Fremont Lake
|
22cfs |