Cannon Ranch, also known as Cannon Reservoir, is a privately owned water supply dam located in Butte, California. This earth dam, completed in 1870, stands at a height of 18 feet and has a storage capacity of 176 acre-feet. Situated along the Tr Oregon Gulch stream, the reservoir serves as a vital source of water for the surrounding area, covering a surface area of 33 acres and draining a 0.52 square mile watershed.

Managed by the California Department of Water Resources and regulated by the Safety of Dams agency, Cannon Ranch is subject to regular inspections to ensure its structural integrity and safety. The dam has been deemed to have a significant hazard potential but is assessed to be in satisfactory condition as of September 2017. Emergency action plans and risk assessments are integral components in the ongoing management of this essential water resource infrastructure, although specific details on these aspects are not provided in the available data.

With its historical significance, essential role in water supply, and regulatory oversight to ensure public safety, Cannon Ranch represents a key piece of California's water resource infrastructure. Its presence along the Tr Oregon Gulch stream highlights the importance of maintaining and monitoring such structures to safeguard against potential hazards and ensure reliable water access for the local community.