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2010. Department of Conservation & Development, Contra Costa County. This dataset represents the SOI within Contra Costa, California. Latest data revision occurred in November 2012; Data was mapped and provided by th...
2011. Geographic Information Systems, Sonoma County, California . The sphere of influence dataset represents the nine cities, urban (incorporated) municipality sphere of influence (e.g. SOI) boundaries within the ...
2013. Yolo County, Public Works Division, Planning Services . This dataset represents the sphere of influence within Yolo County, California. Latest data export January 9th , 2013. Data was mapped and provided... Yolo County (Calif.). Public Works Division .
2008. Amador County (Calif.). This dataset contains spheres of influence boundaries for the five incorporated cities in Amador County, California: Amador City, Ione, Jackson, Pl...
2016. Fresno County (Calif.). Department of Public Works and Planning. This polygon dataset shows the areas of influence for all cities incorporated within Fresno County, California as of 2016.
2014. Kern County (Calif.) -- Engineering, Surveying and Permit Services . This polygon dataset shows the Sphere of Influence areas for incorporated cities in Kern County, California per Local Agency Formation Commission (...
2016. Mono County (Calif.) -- Information Technology. This polygon dataset shows spheres of influences for Hollister and San Juan Bautista, cities within San Benito County, California for 2016. .
2014. San Joaquin County, Community Development, Geographic Information Systems. This dataset represents the spheres of influence within San Joaquin County, California. Latest data export occurred on July 14th, 2014. Data was ma... San Joaquin County (Calif.). Community Development Department.
2015. Santa Clara County Planning Office. This polygon dataset is the official pheres of Influence GIS layer representing Spheres of Influence (SOI) Boundaries for Cities within Santa Clara...
2008. Solano County GIS. The 'Solano County City Spheres of Influence' layer is an updated version of a layer (city_spheres_of_influence.shp) originally created and maintai...