- the main E-W highway serving the valley. Route 150 - a minor E-W highway connecting Ojai to the valley. Route 23 - a minor N-S highway connecting Fillmore to the Conejo Valley. Santa Paula Branch Line - the railway corridor through the valley, mostly used for excursions. References External links USGS.gov: The Santa Clara River Valley County of Ventura.gov: Santa Clara River Watershed Santa Clara River Watershed Committee (SCRWC) website Valleys of Ventura County, California Santa Clara River (California) River valleys of the United States Santa Paula, California Valleys of California