Mcpherson is a private irrigation dam located in Natrona, Wyoming, with a primary purpose of providing water for irrigation. Built in 1923, this earth dam stands at a height of 20 feet and has a hydraulic height of 15 feet. It spans 510 feet in length and has a storage capacity of 168 acre-feet, with a normal storage level of 113 acre-feet. Despite its age, the dam is in fair condition with a low hazard potential, making it a relatively safe structure for water resource management.

Managed by the Wyoming State Engineer's Office, Mcpherson Draw TR Casper Cr serves as a vital water resource for the area. The dam features an uncontrolled spillway with a width of 100 feet and an outlet gate for water control. Regular inspections are conducted, with the last assessment taking place in September 2017, revealing a fair condition assessment. The risk assessment for the dam is moderate, indicating a level of 3 out of 5 in terms of potential hazards.

In the event of an emergency, the dam has protocols in place, although specific details such as the Emergency Action Plan (EAP) preparation status and risk management measures are not specified in the data. With Liz Cheney as the Congressional Representative for the area, Mcpherson continues to play a crucial role in water management for irrigation purposes, highlighting the importance of sustainable water resource practices in the region.