Catwalk is a privately owned irrigation dam located in Sheridan, Wyoming, specifically in the vicinity of Gangplank Creek on an unnamed ranch. Designed by Hugh Lowham, this Earth-type dam stands at a height of 30 feet with a hydraulic height of 23 feet and a structural height of 31 feet. With a storage capacity of 59 acre-feet and a normal storage level of 33 acre-feet, Catwalk serves multiple purposes including fire protection, stock watering, and irrigation.

The dam, completed in an unspecified year, spans a length of 380 feet and covers a surface area of 3.79 acres with a drainage area of 1.14 square miles. Equipped with an uncontrolled spillway that is 75 feet wide, Catwalk has a low hazard potential and is in fair condition as of the last inspection in June 2019. With its moderate risk assessment, Catwalk plays a crucial role in managing water resources for agricultural activities in the region, highlighting the importance of maintaining and monitoring such structures in the face of changing climate conditions.

Overall, Catwalk represents a vital piece of infrastructure in Wyoming's water management system, contributing to the sustainability of irrigation practices in the area. As a privately owned dam, it serves as a reminder of the diverse network of water structures that support local communities and ecosystems, emphasizing the need for continued oversight and maintenance to ensure the resilience of water resources in the face of climate challenges.