S. P. is a privately owned irrigation dam located in Casper, Wyoming, on the East Webb Creek. Completed in 1952, this earth dam stands at 25 feet high with a hydraulic height of 20 feet and a structural height of 29 feet. With a length of 465 feet and a storage capacity of 52 acre-feet, S. P. serves the primary purpose of irrigation in the area. Despite its poor condition assessment and low hazard potential, the dam has a moderate risk assessment rating and is subject to state regulation, inspection, and enforcement.

The dam features an uncontrolled spillway with a width of 10 feet and an outlet gate of one valve. It is situated in Natrona County, Wyoming, and falls under the jurisdiction of the Sacramento District of the US Army Corps of Engineers. Although S. P. has not undergone recent modifications or emergency action plan updates, its last inspection in August 2019 revealed poor condition. With a moderate risk rating, the dam poses potential challenges for its surrounding area, making regular inspections and maintenance crucial for its continued safe operation.

Owned and operated by a private entity, S. P. serves as a vital irrigation structure in the region, facilitating water supply for agricultural purposes. Despite its age and condition issues, the dam remains in operation, contributing to the local water resource management efforts. Climate and water resource enthusiasts may find interest in the history and maintenance challenges faced by S. P., as well as the importance of effective risk management and regulatory oversight in ensuring its continued functionality and safety.