H079-03
Accumulation and Dissipation of Water Associated with Flooding in the Missouri River Basin

Wednesday, 9 December 2020: 20:38
Virtual
Mackenzie Anderson1, Donald F Argus2, Dennis P. Lettenmaier3, John T Reager II4, David N Wiese2, Hilary R Martens5 and William Payton Gardner6, (1)University of California Los Angeles, Los Angeles, CA, United States, (2)Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (3)University of California Los Angeles, Department of Geography, Los Angeles, CA, United States, (4)University California, Irvine, Irvine, CA, United States, (5)California Institute of Technology, Pasadena, CA, United States, (6)Sandia National Laboratories, Albuquerque, NM, United States
Recorded Presentation
Abstract:
Increased water storage in the Missouri River basin as inferred from GRACE gravity [Reager et al. 2014] preceded the May–July 2011 catastrophic floods. In this study, we analyze the evolution and lateral distribution of water components in the four years before and two years after the 2011 floods (believed to occur 1 every 500 years). We integrate GPS measurements of solid Earth's elastic response to water change and GRACE gravity data to infer change in total water storage as a function of time in the Missouri River basin. We furthermore evaluate change in total surface water in three giant reservoirs along the Missouri River and water flowing through the Saint Joseph, Missouri, gauging station. We aim to understand how water changes between different components (snow, soil moisture, groundwater, surface water) and how the spatial distribution of water changes in the Missouri River basin.
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