TEXT VERSION  SEARCH FOR: Home Living in Palo Alto Business in Palo Alto Visiting Palo Alto Environment in Palo Alto Arts, Parks & Recreation Know Zone Departments Emergency Information Public Works Home Previous Page Public Works Department News Flood Zone Descriptions: Zone A0 The A0 Zone involves shallow "sheet-flow" of between one and three feet depth from an overflowing creek.  There are a few small areas of localized A0 flooding in the City of Palo Alto adjacent to Matadero Creek near Hillview Avenue. Acceptable Use Policy Accessibility Your Privacy Site Map Search Engine A-Z Index Comment Form Missing Content   City of Palo Alto City Hall - 250 Hamilton Ave, Palo Alto, CA 94301 | Main Telephone Number 650-329-2100 8am-5pm M-Th, Alt Fridays