National Geologic Map Database
General Information
- Title: Sediment transport and deposition, Walnut and Pacheco Creeks, Contra Costa County, California, August 1965 - April 1970
- Author(s): Porterfield, George
- Publishing Organization: U.S. Geological Survey
- Series and Number: Open-File Report OF-72-302
- Publication Date: 1972
- Map Scale: 1:230,000
- Cross Section: None
- North Latitude: 38° 2' 45" N (38.0458)
- South Latitude: 37° 45' 0" N (37.7500)
- East Longitude: 121° 54' 23" W (-121.9064)
- West Longitude: 122° 9' 52" W (-122.1644)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.