topic Re: Dissolving particular polygons in Geoprocessing Questions

Dissolving particular polygons

Anonymous User — Fri, 22 Mar 2013 13:52:51 GMT

Original User: ossi88

Hi

I have two layers, one with rivers and one with watersheds. I am interested in having 1 river within each polygon, but my problem is that I have too many watershed polygons. Therefore I wish to dissolve the polygons that dosen't have a river with the neighboring polygons that does have them. How can this be done?

Thanks

Re: Dissolving particular polygons

Anonymous User — Fri, 22 Mar 2013 14:28:14 GMT

Original User: mattpayne22

Hi,

Do all of your watersheds that DO NOT have rivers touch a watershed that DOES have a river, or are there any gaps or standalone watersheds that do not have rivers?

Matt

Re: Dissolving particular polygons

DanLee — Fri, 22 Mar 2013 16:52:11 GMT

I assume you know which whatersheds don't contain a river already; you can give this a try:
- select all whatersheds that don't contain a river;
- run Eliminate tool to merge each of them with a remaining watershed by the area/border option you specify.

Test a few features first to see if you get what you expected.