Accession Number : ADA273431

Title :   Application of a Geographic Information System to Rainfall-Runoff Modeling

Descriptive Note : Research rept.

Corporate Author : CALIFORNIA UNIV DAVIS DEPT OF CIVIL ENGINEERING

Personal Author(s) : Thirkill, David L

Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a273431.pdf

Report Date : Feb 1991

Pagination or Media Count : 119

Abstract : The planning of water resource projects relies heavily on geographic information describing river basins. Information about topography, land use, vegetative cover, soil type and erodibility are needed in rainfall-runoff modeling, flood damage determination, soil erosion studies, and water quality studies. Geographic Information Systems (GIS) have been developed to take advantage of the data handling capability of digital computers for storage and use of geographic information. With a GIS, less averaging is required and greater use of readily available physical data is accomplished. The computer program system, HEC1-ADAPT, combines two existing models. ADAPT is a GIS that was originally developed by W.E. Gates and Associates to aid in sewer design. HEC-1 is a rainfall-runoff model that was developed at the Hydrologic Engineering Center of the Corps of Engineers. These two modeling systems are linked together to provide a GIS-based watershed-runoff capability. This report describes the testing of the HECI-ADAPT system for rainfall-runoff modeling.

Descriptors :   *INFORMATION SYSTEMS , *COMPUTER APPLICATIONS , *RAINFALL , *RUNOFF , COMPUTER PROGRAMS , COMPUTERIZED SIMULATION , COMPUTERS , TOPOGRAPHY , SOILS , RESOURCES , RIVERS , SEWERS , FLOOD CONTROL , DIGITAL COMPUTERS , LAND USE , SOIL EROSION , WATER RESOURCES , WATER QUALITY , FLOODS , WATERSHEDS , ENGINEERS , PLANNING , ENGINEERING , HYDROLOGY , WATER , DAMAGE , DATA MANAGEMENT

Subject Categories : Hydrology, Limnology and Potamology
      Computer Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE