Aiming at a map of urban area flow paths caused by extreme rainfall I am trying to figure out the most reasonable approach.
What I can apply:
ArcGis 9.3.1 (ArcView licence)
ArcHydro Tools 9 version 184.108.40.2066
a DEM with 1-m-resolution (~ 200 km^2)
layers of river net, buildings, streets and project area outline
unfortunately only a rather limited amount of time, as it is only one aspect of my project.
Any advise on whether it is a good idea at all to use ArcHydro, things to do and to avoid is highly appreciated! My impression is that most people use ArcHydro on landscape scale. Do I overlook an alternative other than a costly (in terms of money and time) hydrological model?