James Porter, also known as Porter Reservoir, is a privately owned water resource located in Modoc, California, near Xl Ranch Indian Res. Built in 1928 for irrigation and water supply purposes, this earth dam stands at a height of 21 feet and has a storage capacity of 106 acre-feet. Despite its fair condition assessment and high hazard potential, the dam is regulated, permitted, inspected, and enforced by the California Department of Water Resources, Safety of Dams division.

Managed by the Natural Resources Conservation Service, James Porter reservoir plays a crucial role in water supply for the surrounding area, drawing from Tr Parker Cr. Its location at S 1, T42N, R13E, MD, showcases its significance in the region's water management infrastructure. With a drainage area of 0.06 square miles and a surface area of 19 acres, the reservoir provides essential resources for agricultural and domestic use in the vicinity.

Owned by a private entity, James Porter dam is a key component in the water supply network of the region. Its strategic location and historical significance make it a vital asset for water resource and climate enthusiasts interested in understanding the dynamics of water management in the Modoc County area. With ongoing inspections and enforcement measures in place, this reservoir continues to serve its primary purpose of water supply while maintaining a fair condition rating.