Abstract
Modeling Surface-Flow Characteristics in Glaciated Landscapes
Track: Water Resources
Author(s): Mary O'Neill, Janet Gritzner, Bruce Millett
The Prairie Pothole Region (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. The purpose of this work is to apply GIS hydrologic modeling techniques to further understanding of surface-flow characteristics of the PPR. High resolution digital elevation models are required to resolve subtle depressions of the low-lying landscape. This research uses an 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 of previous research piloted at two wetland complexes in Deuel County, SD. This phase of the research focuses on interpreting modeled drainages, looking at patterns of basin connectivity. Closed basins in wet years overflow forming surface connections, that eventually eliminate wetland features as the landscape ages. ArcHydro Tools are used extensively in the model development.
Mary O'Neill
South Dakota State University
Box 504 - Department of Geography
Brookings , South Dakota 57007
United States
Phone: 605-688-5597
E-mail: mary.oneill@sdstate.edu
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 57006
United States
Phone: 605-695-5697
E-mail: bruce.millett@sdstate.edu