It flows southwest through a  canyon that opens west of El Verano. In the Sonoma Valley, it joins with Felder Creek just north of West Watmaugh Road and becomes Fowler Creek.
The river courses southwesterly through a chasm situated to the west of El Verano. In the Sonoma Valley, it unites with Felder Creek immediately north of West Watmaugh Road, subsequently taking on the name Fowler Creek.