TY - RPRT TI - Sediment transport and deposition, Walnut and Pacheco Creeks, Contra Costa County, California, August 1965-April 1970 AU - George Porterfield PY - 1972 DO - 10.3133/ofr72302 UR - https://pubs.usgs.gov/publication/ofr72302 ID - ofr72302 ER -