Term Project Outline
CE 394K Surface Water Hydrology
University of Texas at Austin
GIS Hydrologic Modeling with HEC HMS in Austin, Texas
by Dean Thomas
The objectives of this project are the following:
- Use a GIS preprocessor to determine parameter input for a hydrologic
model.
- Use the system to model watersheds in the Austin, Texas area.
- Compare results of the hydrologic modeling with existing studies.
The traditional formulation of a hydrologic model for a watershed
is a time consuming process, mainly devoted to the determination
of parameter values to be used for estimating runoff. GIS data
such as topography, land use, and soil type holds the promise of
significantly reducing the task of constructing a hydrologic model.
This project will be an attempt to integrate the following components:
- HMS, a new hydrologic modeling software developed by the HEC.
- HECPREPRO
, a preprocessor created for the HMS program.
- GIS data from the Austin Project.
The results of the modeling will be compared with existing
hydrologic studies for the Austin area. This data is on file with
the City's Stormwater Management Division.
The project is being undertaken to help determine the following:
- The effectiveness of using existing GIS data for hydrologic modeling
of small, urbanized and developing watersheds.
- The accuracy of GIS developed hydrologic models, in comparison to
existing studies.
- Whether needed hydrologic parameters can be integrated into a GIS
preprocessor for input to the HMS modeling software.
If you'd like to know more, or want me to know more, e-mail me at:
dean_t@mail.utexas.edu
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