The various elements of the City's municipal storm drain system (manholes, pipelines, catch basins, pump stations, etc.) are mapped out in the City's Geographical Information System (GIS). The GIS map is annotated with storm drain pipe diameters, manhole and catch basin depths, and direction of flow in the pipeline network. The GIS storm drain system map is available for public viewing at the City of Palo Alto Development Center, located at 285 Hamilton Avenue, across the street from Palo Alto City Hall. In order to view the map, interested parties should ask for assistance from one of the Public Works Engineering Services staff members at the Development Center.