Listed below are links to information that may be useful in analysis, both for your current environmental cases but also for future research.

The Oakland Museum of California has published a series of online and paper copy Creek and Watershed Maps that include the location of storm drain lines beneath our communities. Because these lines can act as preferential pathways for contaminant migration, these maps are an important resource for Responsible Parties and consultants in general. More information and map downloads are available on the Museum's website at Guide to San Francisco Bay Area Creeks.

The maps can also be purchased at Creek Mapping Project.

Please note: To encourage wider use, the maps are not copyrighted.

Links to specific maps covering much of Alameda County:

• Hayward - San Leandro*
• Pleasanton - Dublin *
• Oakland - Berkeley*

The following links may be of use for subsurface investigations within the county. Additional resources exist; these maps should not be considered a comprehensive listing.

• Geologic Map and Map Database of the Oakland Metropolitan Area, Alameda, Contra Costa, and San Francisco Counties, California, MF-2342; By R.W. Graymer, 2000;
• Quaternary geology of Alameda County, and parts of Contra Costa, Santa Clara, San Mateo, San Francisco, Stanislaus, and San Joaquin Counties, California: A digital database, OF97-97; By: E.J. Helley and R.W. Graymer, 1997,
• Preliminary Geologic Map Emphasizing Bedrock Formations in Alameda County, California: A Digital Database, OF96-252; By R.W. Graymer, D.L. Jones, and E.E. Brabb, 1996;
• Geologic Map of the San Francisco Bay Region, By R.W. Graymer, B.C. Moring, G.J. Saucedo, C.M. Wentworth, E.E. Brabb, and K.L. Knudsen, 2006;