Edited sentence: After exiting the approximately  high dam, the creek turns north and meets the North Fork Matilija Creek; from there on it is the Ventura River.From its headwaters south of Sespe Creek, the creek flows east and south through a narrow, flat-floored valley.It arcs to the east and joins Matilija Creek shortly downstream.It then begins to parallel California State Route 33 as it nears the town of Wheeler Springs.It then turns east and receives the Middle Fork, which flows generally south and west, on the right, then flows east paralleling Forest Road 5N24 before it empties into Matilija Lake, now mostly a mudflat, on a broad, flat alluvial fan.It then turns north and cascades through a narrow gorge, then receives a tributary from the left.The creek runs west, paralleling Forest Route 6N31, and receives a small tributary with a roughly fan-shaped drainage basin from the left.The smaller North Fork Matilija Creek flows west and south from its headwaters near Rose Valley, which is the source of Sespe Creek