Stewart Gulch North Fork is a flood risk reduction structure located in Ada County, Idaho. Completed in 1997, this earth dam stands at a height of 38 feet and has a hydraulic height of 34 feet. With a storage capacity of 8 acre-feet and a maximum discharge of 440 cubic feet per second, this dam plays a crucial role in managing flood risks in the area.

The dam is situated on an unnamed stream called Stewart Gulch Creek, and it covers a drainage area of 0.6 square miles. Despite its significant hazard potential, the structure has been assessed as satisfactory in terms of condition. The last inspection in November 2018 reported that the dam meets regulatory standards and is in good working order, providing assurance to the local government and residents in the event of a flood emergency.

Managed by the Idaho Department of Water Resources, Stewart Gulch North Fork serves as a vital infrastructure for flood control in Boise. With its moderate risk assessment and satisfactory condition, this dam stands as a testament to the importance of water resource management and climate resilience in the face of changing environmental conditions.