Hall, also known as Hot Springs No.1, is a private water resource located in Mountain Home, Idaho. This structure is regulated by the Idaho Department of Water Resources and is subject to state permitting, inspection, and enforcement. The dam, completed in 1945, stands at a height of 33.4 feet and is primarily used for purposes other than flood control or hydroelectric power generation. It has a storage capacity of 450 acre-feet and covers a surface area of 67 acres.

Despite its historical significance, Hall poses a significant hazard potential with a poor condition assessment. The last inspection in July 2019 revealed maintenance issues, prompting a high-risk assessment. The structure lacks a spillway, relying on a slide gate for outlet control. It is crucial for water resource and climate enthusiasts to monitor Hall closely due to its vulnerability to failure and the potential impacts on the surrounding environment and communities. Further evaluation and risk management measures are essential to ensure the safety and integrity of this essential water infrastructure.