Hydrographic surveys of the Missouri and Yellowstone Rivers at selected bridges and through Bismarck, North Dakota, during the 2011 flood

Abstract

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Streamflow, Sediment Transport, and Geomorphic Change during the 2011 Flood on the Missouri River Near Bismarck–Mandan, ND

“…Complex patterns of scour and deposition around these bridges were documented during the flood of 2011 (Densmore et al. ). Although local areas of erosion and deposition mostly differed between the two flows, some areas were similar.…”

“…Bathymetry of the river channel was obtained from a hydrographic survey completed June 28–July 8, 2011, using a high‐resolution multibeam echosounder (for details on the hydrographic survey see Densmore et al. ). The hydrographic survey was collected during the flood recession, but shortly after the peak of the flood on June 25, 2011, when daily mean streamflow was 4,390 m 3 /s (Figure ).…”