Authors: Maram Alrehaili*, University of Florida
Topics: Geomorphology, Spatial Analysis & Modeling, Water Resources and Hydrology
Keywords: Lower Mississipi river; Oxbow lakes; connectivity; longevity(lifetime); NDWI.
Session Type: Poster
Presentation File: No File Uploaded
Oxbow lakes are one of the essential features of meander river floodplains. It has unique forms and characteristics which distinguished from other lakes in the other floodplains. The lakes generally formed as scars cutting the channel off in the meandering rivers, and over time, the old pathway of the river is rapidly blocked off by the deposition of sediment. Eventually, the mainstream migrates away from the lake, some of the lakes are long-lasting, and other lakes eventually become terrestrial and slowly disappear.
The poster attempts to investigate the reasons behind that by using the Normalized Difference Water Index NDWI to measure the extent of the water in lakes over twenty years to study and investigate the connectivity of the oxbow lakes to Lower Mississippi flood plain and its longevity (lifetime) from 2000- 2020 by using USGS, Google earth engine, and the National Oceanic and Atmospheric Administration (NOAA) data. Landsat 5 and Landsat 8 data are analyzed from 2000 -2020. The spatial resolution is 30 meters, and the temporary resolution is twenty years from 2000 to 2020. Over the twenty years, the floodplain in the Lower Mississippi River has been seesawed between lacustrine once and terrestrial
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