At the end of the Capay Valley near Esparto Cache Creek runs east into Sacramento Valley, ending in a settling basin east of Woodland. If the Sacramento river is not in flood then any overflow runs into the "Tule Canal", continues as "Prospect Slough" and finally enters the Sacramento River at "Cache Slough". If the Sacramento "is" in flood, then the overflow from the settling basin is swept into the Yolo Bypass and "Sacramento Bypass" flood control system, emerging directly at "Cache Slough".