Wagner is a privately owned dam located in the Big Muddy Oil Field in Natrona, Wyoming. Built in 1909 for irrigation purposes, this Earth dam stands at a height of 9 feet with a hydraulic height of 7 feet. The dam has a storage capacity of 262 acre-feet and covers a surface area of 35 acres. Despite its low hazard potential, the dam's condition assessment is rated as poor, highlighting the need for maintenance and improvements.

With its location on the Clear Fork Muddy Creek, offstream from the river, Wagner serves a vital role in providing water for irrigation in the area. However, its poor condition and moderate risk assessment demonstrate the importance of ongoing monitoring and management to ensure the safety and effectiveness of the dam. The presence of an uncontrolled spillway, a valve outlet gate, and a history of state regulation and inspection indicate that steps have been taken to address safety concerns, but more work may be needed to bring Wagner up to current standards.

As climate change continues to impact water resources and infrastructure, dams like Wagner play a crucial role in managing and distributing water for agricultural purposes. With its historical significance and ongoing importance for irrigation in the region, Wagner serves as a reminder of the challenges and opportunities associated with maintaining and improving our water resources in the face of a changing climate.