 Before contact with Europeans, it was spoken along the northern and southern shores of Clear Lake to the north of San Francisco, and in the coast mountains west of Sacramento Valley.Eastern Pomo shared borders in the north with the Patwin and the Yuki languages, in the south with the Lake Wappo, the Wappo, the Southeastern Pomo, the Southern Pomo, the Central Pomo, the Northern Pomo, and the Lake Miwok.They also shared a border to the west with the Northern Pomo.