Hydrologic Modeling for the Sacramento and San Joaquin Basins Using GeoHMS

Author: Christopher N. Dunn
Organization: U.S. Army Corps of Engineers

609 Second Street
Davis, CA 95616
USA

Phone: (530) 756-1104
Fax: (530) 756-8250
christopher.n.dunn@usace.army.mil

The U.S. Army Corps of Engineers Sacramento District and Hydrologic Engineering Center (HEC) are developing hydrologic models of the Sacramento and San Joaquin river basins. Because of the size of the study and a tight deadline, HEC incorporated GIS technology to expedite the modeling effort. GeoHMS is used to develop the hydrologic elements and their connectivity for HEC's Hydrologic Modeling System (HEC-HMS). Additionally, GeoHMS calculates river and watershed characteristics used for estimation of parameters of ungauged basins. This paper will discuss the benefits of using GeoHMS technology and the ease of its application.