Winchester, located in Idaho, is home to a significant water resource structure on Lapwai Creek and Clearwater River. This earth dam, constructed in 1910, stands at a height of 40.2 feet and has a hydraulic height of 36.3 feet. With a storage capacity of 1425 acre-feet and a spillway width of 48 feet, this dam plays a crucial role in managing water resources in the region.

The dam at Winchester is state-regulated and inspected regularly to ensure its safety and functionality. Despite being classified as having a high hazard potential, it is currently in fair condition as of the last assessment in May 2019. The risk assessment for this structure is very high, indicating the importance of ongoing monitoring and management measures to mitigate potential risks and ensure the safety of nearby communities.

Winchester's dam serves a primary purpose of 'Other' and is essential for various water management activities in the area. With its storied history dating back over a century, this structure stands as a testament to the importance of water resource infrastructure in the face of changing climate conditions. As water resource and climate enthusiasts, Winchester offers a fascinating case study in the intersection of human engineering and environmental stewardship.