Hornbuckle No. 1

• Overview
• Reservoirs
• Rivers
• Fishing
• Boat Ramps
• Explore

Hornbuckle No. 1 is a privately owned earth dam located in Edgemont, South Dakota, along the Dry Fork river. Built in 1970, this dam serves primarily for irrigation purposes with a storage capacity of 302 acre-feet. Standing at a height of 19 feet, with a spillway width of 75 feet, this dam has a low hazard potential and is rated in fair condition as of the last inspection in March 2020.

Managed by the Wyoming State Engineer's Office, Hornbuckle No. 1 is subject to state regulations, inspections, and enforcement. Despite its moderate risk assessment, the dam has not been modified in recent years and is not part of the US Army Corps of Engineers' portfolio. With a drainage area of zero and a maximum discharge of zero, the dam covers a surface area of 40 acres and plays a vital role in the local irrigation system.

The designer of Hornbuckle No. 1, John A Lambert, ensured that the dam's core was made of stone and the foundation of soil, providing structural stability. With one other controlled outlet gate, this dam remains a key infrastructure for water resource management in Converse County, Wyoming, under the watchful eye of the state regulatory agency.