Eld is a privately owned water resource structure located in Valley, Idaho, with a primary purpose of irrigation. Constructed in 1976, this earth dam stands at a height of 18.8 feet and has a storage capacity of 121 acre-feet. The dam, built with stone core and rock and soil foundations, controls the flow of water from LAFFINWELL CREEK and GOLD FORK RIVER, covering a surface area of 18 acres and serving a drainage area of 4.3 square miles.

Managed by the Idaho Department of Water Resources, Eld is regulated and inspected by state authorities to ensure compliance with safety standards. Despite being classified as having a low hazard potential, the dam's condition was assessed as fair during the last inspection in June 2017. With an uncontrolled spillway width of 20 feet and a maximum discharge capacity of 300 cubic feet per second, Eld presents a moderate risk level (3) based on the risk assessment conducted.

Environmental enthusiasts interested in water resource management and climate change adaptation can find Eld to be a fascinating case study in the sustainable utilization of water for agricultural purposes. The dam's location in a rural area, its reliance on natural resources for construction, and its operational history provide valuable insights into the intersection of water infrastructure, regulatory oversight, and risk management. As climate variability continues to impact water resources, understanding the design, maintenance, and monitoring of structures like Eld is crucial for ensuring the resilience of water systems in the face of evolving environmental challenges.