The Egin Canal Diversion, also known as St. Anthony, is a private irrigation structure located in Fremont, Idaho. Completed in 1903, this gravity dam serves multiple purposes including hydroelectric power generation, irrigation, and recreation. With a dam height of 6.5 feet and a length of 360 feet, it has a storage capacity of 500 acre-feet and can discharge up to 50,000 cubic feet of water per second.

Operated under the oversight of the Federal Energy Regulatory Commission, the Egin Canal Diversion has a low hazard potential and a moderate risk assessment. Despite its age, the structure remains in good condition with a regular inspection frequency to ensure its safety. The dam features an uncontrolled spillway, a multi-arch core type, and is constructed on a rock foundation, providing essential water resources for agriculture and other uses in the region.

Located on the Henrys Fork Snake River, the Egin Canal Diversion plays a crucial role in water management and supply in the area. As a key component of the local irrigation system, it highlights the intersection of water resource management and climate considerations in ensuring sustainable water use for agricultural and recreational purposes.