Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The polyline feature is used to inventoy our Street Centerlines in Roanoke County. The individual polygon objects mirror our Adddress Block Ranges. Also includes attributes on lower and upper address ranges, functional classes, speed limits and others. Used as a secondary dispatch source for E911 calls.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN><SPAN>Jurisdictions is a polygon feature representing Roanoke County’s official version of the County boundary, as well as the boundary for the Town of Vinton. Roanoke County originally created this feature from County records at the County Courthouse in Salem, Va. The other jurisdiction boundaries within the feature were originally created from each jurisdictions records. Roanoke County has endeavored to reconcile its boundary with that of the surrounding localities through cooperative agreements such as the Public Safety Answering Point (PSAP) inter-jurisdictional program, Boundary and Annexation Survey (BAS) - U.S. Census Bureau, and parcel swaps though Board of Supervisor Action. </SPAN></SPAN></P><P><SPAN><SPAN>Jurisdiction are maintained within the Administration Feature and is dissolved out weekly.</SPAN></SPAN></P><P><SPAN><SPAN>Administration is a polygon feature consisting of the smallest statistical areas bounded by visible features such as roads, streams, railroad tracks, and mountain ridges, as well as by nonvisible boundaries such as jurisdictional limits, school district, public safety boundaries, voting precincts, and census blocks. This methodology allows for single stream editing to move coincidental boundaries across many aggregate datasets simultaneously. Administration is maintained though an ArcGIS topology class in conjunction with County Parcels and Zoning. The topology prevents self-intersection and gaps, while ensuring complete coverage amongst the participating features.</SPAN></SPAN></P></DIV></DIV></DIV>