GISHydro is a computer program used to assemble and evaluate hydrologic
models for watershed analysis. Originally developed in the
mid-1980s, the program combines a database of terrain, land use, and soils
data with specialized GIS tools for assembling data and extracting model parameters.
The primary purpose of the GISHydro program is to assist engineers in
performing watershed analyses, especially to support transportation design
projects, in the State of Maryland.
History of GISHydro
GISHydro was developed out of a need for automated methods for
conducting watershed analyses. Manual methods for assembling
watershed parameters for rainfall-runoff models such as TR-20 require an
extraordinary amount of effort and tediousness to assemble map based data. When
GIS technology emerged in the early 1980s, the ability to automatically
determine hydrologic model parameters was identified.
In the Fall of 1997, a new collaborative project between the Department
of Civil and Environmental Engineering and the Maryland State Highway
Administration began to update and enhance GISHydro.
Current and Future Projects
Currently, GISHydro2000 is based on ArcView3.x as its GIS platform. A project is underway to port GISHydro2000 to an ArcGIS 9.x platform. The ArcView 3.x version of GISHydro2000 will continue to be maintained, supported, and possibly even extended while this tranformation to Arc9 is being completed.