Abstract
Modeling Regional Surface Flow in Glaciated Landscapes
Track: Water Resources
Author
GIS hydrologic modeling techniques are used to better understand regional surface-flow in the Prairie Pothole Region (PPR) of North America. The PPR of the US and Canada is characterized by thousands of shallow, water-filled depressions with sizes ranging from a fraction of a hectare to several square kilometers with few organized drainage networks. High resolution digital elevation models are required to resolve subtle depressions of the low-lying landscape. This research uses an Interferometric Synthetic Aperture Radar (IFSAR)-derived digital terrain model (DTM) and orthorectified radar imagery (ORI) as a base for developing a hydrologically-correct DEM and derivative products. This work builds on previous research piloted at two wetland complexes in Deuel County, SD. The research focuses on interpreting regional drainages, looking at patterns of wetland basin connectivity. Closed basins in wet years overflow forming surface connections, which eventually eliminate wetland features as the landscape ages.
Janet Gritzner
South Dakota State University
Box 504 - Department of Geography
Brookings, South Dakota 57007
United States
Phone: 605-692-4643
Fax: 605-688-4030
E-mail: janet.gritzner@sdstate.edu
Bruce Millett
South Dakota State University
Box 504 - Department of Geography
Brookings, South Dakota 57007
United States
Phone: 605-688-4833
Fax: 605-688-4030
E-mail: bruce.millett@sdstate.edu