Jack's Swamp Dam No. 2, located in Canby, California, is a privately owned earth dam built in 1926 with a primary purpose of water supply for irrigation and other uses. Situated on the Tr Pit River, this dam stands at a height of 12 feet with a hydraulic height of 8 feet, providing a storage capacity of 1,013 acre-feet and covering a surface area of 457 acres. Despite its age, the dam is in satisfactory condition with a low hazard potential, as reported in the last inspection conducted in August 2019.

Managed by the California Department of Water Resources (DWR) under the Safety of Dams program, Jack's Swamp Dam No. 2 is subject to state regulation, inspection, and enforcement to ensure its structural integrity and safety. With a drainage area of 7.45 square miles, this dam plays a crucial role in maintaining water supply for the local community and agricultural activities in the region. Although no spillway type or maximum discharge information is provided, the dam's design and construction reflect the engineering practices of its time.

While lacking specific details on its spillway and locks, Jack's Swamp Dam No. 2 remains a significant water resource infrastructure in Modoc County, California, contributing to the sustainable management of water resources in the area. With its historical significance and ongoing regulatory oversight, this dam serves as a reminder of the importance of maintaining and monitoring aging infrastructure to ensure the safety and reliability of water supply systems in the face of changing climate conditions.