Magnitude and Frequency Analysis in Large Rivers

by David S. Biedenharn, US Army Corps of Engineers, Vicksburg, MS, USA,
Charles D. Little, US Army Corps of Engineers, Vicksburg, MS, USA,
Colin R. Thorne, US Army Corps of Engineers, Vicksburg, MS, USA,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

A study of the magnitude and frequency of sediment transport was conducted on the Mississippi River at Natchez, MS, Red River at Alexandria, LA, and Pearl River at Bogalusa, LA. The individual flow increment transporting the most sediment was found to have a recurrence interval of slightly less than or equal to 1 year for all three rivers. It was found that over 80 percent of the long term sediment load was transported by flows with recurrence intervals of less than 3 years. The occurrence of extreme, but relatively infrequent, events had very little impact on these results. This suggests that the intermediate flows (less than 3 year recurrence interval for these three rivers) have the greatest influence on sediment transport and, therefore, on channel morphology.

Subject Headings: Sediment transport | Rivers and streams | Streamflow | River flow | Water supply systems | Frequency analysis | Channels (waterway) | Mississippi River

Services: Buy this book/Buy this article

 

Return to search