Putah Creek, also known as Liwaito in the Patwin language, spans 85 miles and is a tributary of the Yolo Bypass and, ultimately, the Sacramento River. It originates in the Mayacamas Mountains and flows east through two dams, forming the border of Yolo and Solano Counties. It is home to native steelhead trout and Chinook salmon and serves as a vital water source for farming in the area.