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dc.contributor.authorSamson, Jeffrey
dc.date.accessioned2012-08-27T21:42:21Z
dc.date.available2012-08-27T21:42:21Z
dc.date.issued2012-08-27
dc.date.submittedJuly 2012
dc.identifier.urihttp://hdl.handle.net/1928/21000
dc.description.abstractThe desire to control rivers to reduce risks of flooding while providing water storage for municipal and agricultural uses has resulted in the disconnection of rivers from their floodplains. An important and often neglected outcome of this detachment is the loss of a plethora of important ecosystem services. This research was focused on answering the following questions related to riparian groundwater storage (bank storage): 1) What is the time to saturation (maximum storage) and time to release of bank storage water as the result of a flood pulse that overbanks a portion of the floodplain?; 2) How does soil stratigraphy impact the movement of water within the floodplain?; and 3) How has historical river engineering and management influenced these processes? The study was conducted on a site in the Rio Grande floodplain in Albuquerque, New Mexico. This site has been the focus of two recent studies which aided in the understanding of the system, and they have both yielded data that was utilized in the model development and calibration of this study. The research questions were answered through a combination of field observations and numerical modeling exercises. The field analysis focused on determining the necessary hydraulic properties that govern water movement through soil. The evaluated properties included saturated hydraulic conductivity, particle size distribution, as well as the development of water retention curves. The results of this laboratory work were used as inputs for a two-dimensonal groundwater model (HYDRUS-2D), which was used to quantify bank storage under a variety of scenarios. Multiple scenarios were studied to answer the research questions; these included variations in the flood stage, flood duration, and variations to the alluvial architecture. Results show bank storage is dominated by horizontal flow through the alluvial aquifer and thus water movement is highly sensitive to floodplain stratigraphy. Also, the highly engineered river system of the middle Rio Grande valley has resulted in the diminished capacity of the floodplain to store water for a prolonged period of time.en_US
dc.description.sponsorshipNational Science Foundation LSAMP Fellowshipen_US
dc.language.isoen_USen_US
dc.subjectAlluvial aquiferen_US
dc.subjectBank storageen_US
dc.subjectFloodplainen_US
dc.subjectGround water hydrologyen_US
dc.subjectHYDRUS 2Den_US
dc.subjectRio Grandeen_US
dc.subjectVariably saturated modelingen_US
dc.subject.lcshFloodplains.
dc.subject.lcshGroundwater recharge.
dc.subject.lcshGroundwater flow.
dc.subject.meshWatershed hydrology.en_US
dc.subject.meshSoil permeability.en_US
dc.subject.meshFloodplains--New Mexico--Albuquerque.en_US
dc.subject.meshRio Grande Watershed.en_US
dc.titleQuantifying the contribution of bank storage due to an alteration in stream stageen_US
dc.typeThesisen_US
dc.description.degreeCivil Engineeringen_US
dc.description.levelMastersen_US
dc.description.departmentUniversity of New Mexico. Dept. of Civil Engineeringen_US
dc.description.advisorStone, Mark
dc.description.committee-memberStormont, John
dc.description.committee-memberWeissmann, Gary


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