Paper No. JAWRA-11-0161-P of the Journal of the American Water Resources Association (JAWRA). This article is a U.S. Government work and is in the public domain in the USA Discussions are open until six months from print publication.
Oregon Hydrologic Landscapes: A Classification Framework1
Article first published online: 26 NOV 2012
© 2012 American Water Resources Association
JAWRA Journal of the American Water Resources Association
Volume 49, Issue 1, pages 163–182, February 2013
How to Cite
Wigington, P. J., Leibowitz, S. G., Comeleo, R. L. and Ebersole, J. L. (2013), Oregon Hydrologic Landscapes: A Classification Framework. JAWRA Journal of the American Water Resources Association, 49: 163–182. doi: 10.1111/jawr.12009
- Issue published online: 4 FEB 2013
- Article first published online: 26 NOV 2012
- Received December 30, 2011; accepted August 31, 2012.
- hydrologic classification;
- hydrologic cycle;
- geospatial analysis
Wigington, Parker J., Jr., Scott G. Leibowitz, Randy L. Comeleo, and Joseph L. Ebersole, 2012. Oregon Hydrologic Landscapes: A Classification Framework. Journal of the American Water Resources Association (JAWRA) 1-20. DOI: 10.1111/jawr.12009
Abstract: There is a growing need for hydrologic classification systems that can provide a basis for broad-scale assessments of the hydrologic functions of landscapes and watersheds and their responses to stressors such as climate change. We developed a hydrologic landscape (HL) classification approach that describes factors of climate-watershed systems that control the hydrologic characteristics of watersheds. Our assessment units are incremental watersheds (i.e., headwater watersheds or areas draining directly into stream reaches). Major components of the classification include indices of annual climate, climate seasonality, aquifer permeability, terrain, and soil permeability. To evaluate the usefulness of our approach, we identified 30 rivers with long-term streamflow-gauging records and without major diversions and impoundments. We used statistical clustering to group the streams based on the shapes of their annual hydrographs. Comparison of the streamflow clusters and HL distributions within river basin clusters shows that the Oregon HL approach has the ability to provide insights about the expected hydrologic behavior of HLs and larger river basins. The Oregon HL approach has potential to be a useful framework for comparing hydrologic attributes of streams and rivers in the Pacific Northwest.