Toward understanding changes in large-scale floodplain connectivity caused by levees
| dc.contributor.author | Scheel, Kara, author | |
| dc.contributor.author | Morrison, Ryan, advisor | |
| dc.contributor.author | Niemann, Jeffrey, committee member | |
| dc.contributor.author | Rathburn, Sara, committee member | |
| dc.date.accessioned | 2018-06-12T16:14:26Z | |
| dc.date.available | 2018-06-12T16:14:26Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | The widespread construction of levees has reduced river-floodplain connectivity and harmed associated fluvial processes in many river systems. Despite the recognition that levees can alter floodplain connectivity, few studies have examined the role of levees in reducing floodplain areas at large watershed scales. In this paper we explore the application of a hydrogeomorphic floodplain mapping approach in the Wabash basin, U.S. to assess floodplain loss in levee-protected areas. We evaluate 10-m and 30-m topographic resolutions and spatially examine the influence of levees on floodplain area in relation to river network attributes within discrete HUC-10 sub-basins. Generally, we found that the floodplains mapped in levee-protected areas were influenced by topographic resolution, stream order, and elevation details of levees found in topography datasets. We show that, when compared to Federal Emergency Management Agency maps, our approach under predicts floodplain area when using 10-m resolution topography data but only slightly over predicts when using 30-m resolution topography. After removing details of levees from topography datasets, we found that basin-aggregate results changed little compared to topography datasets that contain levees, though larger floodplain areas were produced in some regions where levees were removed. This work contributes to a growing research emphasis on linking water resource management to river-floodplain connectivity. | |
| dc.format.medium | born digital | |
| dc.format.medium | masters theses | |
| dc.identifier | Scheel_colostate_0053N_14805.pdf | |
| dc.identifier.uri | https://hdl.handle.net/10217/189420 | |
| dc.language | English | |
| dc.language.iso | eng | |
| dc.publisher | Colorado State University. Libraries | |
| dc.relation.ispartof | 2000-2019 | |
| dc.rights | Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. | |
| dc.subject | fluvial processes | |
| dc.subject | surface water hydrology | |
| dc.subject | river/streams | |
| dc.subject | flooding | |
| dc.title | Toward understanding changes in large-scale floodplain connectivity caused by levees | |
| dc.type | Text | |
| dcterms.rights.dpla | This Item is protected by copyright and/or related rights (https://rightsstatements.org/vocab/InC/1.0/). You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). | |
| thesis.degree.discipline | Civil and Environmental Engineering | |
| thesis.degree.grantor | Colorado State University | |
| thesis.degree.level | Masters | |
| thesis.degree.name | Master of Science (M.S.) |
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