CRWR Online Report 97-8
HEC-PrePro: A GIS Preprocessor for Lumped Parameter Hydrologic Modeling
Programs
By Ferdinand Hellweger and David R. Maidment
ABSTRACT
This thesis documents a procedure called HEC-PrePro, which
was developed by the author. The purpose of the procedure is to automate the
translation of data from a geographic information system (GIS) data structure
to a hydrologic data structure used by lumped parameter hydrologic modeling
programs. HEC-PrePro is capable of identifying seven hydrologic elements
(subbasins, reaches, sources, sinks, junctions, diversions, and reservoirs) as
well as connectivity among them. The procedure was implemented in ARC/INFO's
Arc Macro Language (AML) and ArcView's Avenue programming language. In both
implementations the data are written to an ASCII file which can be read by
the hydrologic modeling program. Four system applications are documented.
CRWR Online Report 97-8
HEC-PrePro: A GIS Preprocessor for Lumped Parameter Hydrologic Modeling Programs
By Ferdinand Hellweger and David R. Maidment
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