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Water Management Information System for the Rio Bravo/Grande Basin

by Carlos Patino-Gomez, M. S., and Daene C. McKinney, PhD., PE

ABSTRACT

The Center for Research in Water Resources (CRWR) of the University of Texas at Austin in cooperation with the National Water Commission of Mexico (CNA) and the support of the North American Development Bank (NADBANK) has developed a binational dataset to build hydrologic information systems, which can be used to support hydrologic analysis and modeling in the Rio Grande/Bravo basin. This dataset consists of an ArcHydro-based Geographic Information System and relational data base containing hydrologic and hydraulic information from the United States and Mexican sides. It will assist in developing bi-national cooperation between Mexico and the United States concerning water in this basin, providing accurate and reliable data necessary for analysis and resolution of water resources issues. Information collected in the project from both Mexican and U.S. agencies did not have the same features and presented some errors, especially in the river system dataset. This information has been processed and reprojected in order to use the same characteristics for the whole basin, creating several classes of data features (feature classes) contained in a geographically referenced database (i.e., a geodatabase). The concept of regionalization was introduced in order to divide the basin into several hydrological subregions, so gridcell-based (or raster) data sets were decomposed into smaller, more manageable sizes to avoid computer memory and processing time difficulties when the geodatabase was developed. This geodatabase represents the first major attempt to establish a more complete understanding of the basin as a whole, using both Mexican and U.S. data.

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