Stewart Mountain, a Federal-owned structure located in Mesa, Arizona, serves as a crucial water resource along the Salt River. Constructed in 1929 by the Bureau of Reclamation, this concrete dam stands at a height of 207 feet, with a storage capacity of 70,070 acre-feet and a surface area of 1,265 acres. With a primary purpose of hydroelectric power generation, Stewart Mountain also supports irrigation and water supply needs in the region.

The dam has undergone modifications in 1992 to enhance its hydraulic, seismic, and structural capabilities. With a hazard potential rated as high and a very high risk assessment score, Stewart Mountain is closely monitored by the Bureau of Reclamation. Although the condition assessment is not currently available, regular inspections are conducted to ensure the dam's safety and functionality. Additionally, an Emergency Action Plan (EAP) is in place, last revised in December 2020, to address any potential risks or emergencies.

As a significant infrastructure for water management and energy production, Stewart Mountain plays a vital role in the water resources and climate resilience of the region. With its impressive height, storage capacity, and historical significance, this dam stands as a testament to the enduring importance of water infrastructure in sustaining communities and ecosystems in Arizona.