MAJOR DRAINAGE SYSTEM (SURFACE) ANALYSIS

1188
2
07-27-2013 06:47 AM
Labels (1)
PopAndrea
New Contributor
Hello,
How I can determine major drainage (surface) flow path and surface ponding in ArcGis 9.3 whit Arc Hydro tools, based on the DEM?
Thanks in advance,
Andrea
Tags (2)
0 Kudos
2 Replies
PopAndrea
New Contributor
Thank you Stuart. I install Arc Hydro Tools and I hope to solve problem.
Andrea
0 Kudos
V_StuartFoote
MVP Frequent Contributor
Andrea,

Do you have ArcGIS Desktop 9.3, or 9.3.1? The ArcHydroTools9.msi installer (build 1.4.0.258, Jan 9 2013) on the secure download site will install and run for either release of ArcGIS.

Once you install, the ArcHydro Tools Help article will take you through the map algebra processes ArcHydro Tools perform for conditioning the DEM (filling sinks), and identifying flow direction, flow accumulation, stream network and/or basin,  and finally raster to feature conversion.

Also, the ArcGIS 9.3/9.3.1 Spatial Analyst help, has some guidance. But is a bit disjointed and out of sequence compared to the Help presentation in ArcHydro Tools, and be sure to review the "Learn more about..." Help panels as well. It will work, but the data handling is a bit more demanding when using Spatial Analyst extension compared to ArcHydro Tools.

Post back if still stuck.

Stuart
0 Kudos