topic Thiessen Polygons From Polygon Input in Geoprocessing Questions https://community.esri.com/t5/geoprocessing-questions/thiessen-polygons-from-polygon-input/m-p/342609#M11952 <HTML><HEAD></HEAD><BODY><SPAN>I'm stumped.&nbsp; I have a map of watersheds of the United States:&nbsp; complex polygons tracing across the US that all meet the ocean eventually.&nbsp; I want to buffer these polygons a few km into the ocean.&nbsp; A Buffer operation will buffer each polygon individually, creating overlap.&nbsp; I can't have this.&nbsp; What I'd like is a sort of Thiessen bubble effect only where no polygons exist (the ocean).&nbsp; The Create Thiessen Polgons only accepts point inputs.&nbsp; There are hundreds of watersheds so I can't do this manually.&nbsp; What can I do?</SPAN><BR /><BR /><SPAN>I'm using ArcInfo license on ArcMap 9.3.1 SP2.</SPAN><BR /><BR /><SPAN>Attached is a visual of what I'm looking for (made in Photoshop).</SPAN></BODY></HTML> Thu, 05 Aug 2010 12:38:36 GMT EricSegerson 2010-08-05T12:38:36Z Thiessen Polygons From Polygon Input https://community.esri.com/t5/geoprocessing-questions/thiessen-polygons-from-polygon-input/m-p/342609#M11952 <HTML><HEAD></HEAD><BODY><SPAN>I'm stumped.&nbsp; I have a map of watersheds of the United States:&nbsp; complex polygons tracing across the US that all meet the ocean eventually.&nbsp; I want to buffer these polygons a few km into the ocean.&nbsp; A Buffer operation will buffer each polygon individually, creating overlap.&nbsp; I can't have this.&nbsp; What I'd like is a sort of Thiessen bubble effect only where no polygons exist (the ocean).&nbsp; The Create Thiessen Polgons only accepts point inputs.&nbsp; There are hundreds of watersheds so I can't do this manually.&nbsp; What can I do?</SPAN><BR /><BR /><SPAN>I'm using ArcInfo license on ArcMap 9.3.1 SP2.</SPAN><BR /><BR /><SPAN>Attached is a visual of what I'm looking for (made in Photoshop).</SPAN></BODY></HTML> Thu, 05 Aug 2010 12:38:36 GMT https://community.esri.com/t5/geoprocessing-questions/thiessen-polygons-from-polygon-input/m-p/342609#M11952 EricSegerson 2010-08-05T12:38:36Z