Texas State University San Marcos, Department of Geography, was asked to assist the Texas Department of Transportation (TxDOT) in creating a geodatabase that would provide Hydrologists and Maintenance personnel the real time data needed to control cost and improve culvert reliability. TxDOT will use this geodatabase to catalog and manage information about culverts in Hays County, Texas. A well designed geodatabase will enable quick and easy access to large volumes of data and enable TxDOT to make proper decisions and implement a good inventory management program.