Subwatershed delineation around sampling points

wolfgangobruca — Wed, 10 Apr 2013 06:36:22 GMT

Hy guys,

How can I deal with that issue: I got 20 sampling stations (raster points) well distributed over a stream network and I would like to arrange sub-watersheds around each of those points to finally get a large one comprised of all those sub-catchments.
What I already tried: transform my raster sampling data into batch points and execute the subcatchment delineation
Actually, this worked BUT the problem is that instead of my 20 originate points the batch point conversion created somelike 80 subpoints with 6 points arranged around my "real" points. That produces confusion when I actually want to carry out zonal statistics on those 20 points (now watersheds) and I got more than 70 subwatersheds now
Anyone an Idea how to derive exactly those 20 watersheds that I would require

Thanks in advance, Wolf

Re: Subwatershed delineation around sampling points

MarkBoucher — Wed, 10 Apr 2013 14:16:54 GMT

Try the batch points and do a watershed delineation. It should create watersheds that overlap and just one per point.

Don't forget to change the BatchDone field in the Batchpoints to zero. If you don't, Arc Hydro or GeoHMS will see them as done and won't use them.

topic Re: Subwatershed delineation around sampling points in Water Resources Questions

Subwatershed delineation around sampling points

Re: Subwatershed delineation around sampling points