Butterfield Valley
Butterfield Valley is a valley along the course of Temecula Creek, in Riverside County, California. Its lower end is now filled by Vail Lake. It heads at 33°27′39″N 116°55′34″W / 33.46083°N 116.92611°W and its mouth is at the site of the Vail Lake Dam at the head of the deep canyon Temecula Creek has cut through Oak Mountain to the Pauba Valley.