Pomo is an archaic place name in Mendocino County, California. It was located 1.25 miles southeast of Potter Valley, at an elevation of 942 feet. It is named after a village of the Pomo people. The village was first described by George Gibbs in 1851 in his Journal of the Expedition of Colonel Redick M'Kee, United States Indian Agent, through Northwe…Pomo is an archaic place name in Mendocino County, California. It was located 1.25 miles southeast of Potter Valley, at an elevation of 942 feet. It is named after a village of the Pomo people. The village was first described by George Gibbs in 1851 in his Journal of the Expedition of Colonel Redick M'Kee, United States Indian Agent, through Northwestern California. The indigenous people of Potter Valley were labeled the Pomo Pomos, distinguishing them from Castel Pomos, Ki Pomos, Cahto Pomos, Choam Chadela Pomos, Matomey Ki Pomos, Usal Pomos, Shebalue Pomos, et al. This village, spelled pō'mō in a 1908 ethnographic report, stood on the east bank of the Russian River just south of the post office. At the time of the report, the Potter Valley gristmill stood on the site.