scholarly journals Modeling the effect of increased sediment loading on bed elevations of the Lower Missouri River

2021 ◽  
Author(s):  
John Shelley

This US Army Corps of Engineers (USACE) National Regional Sediment Management Technical Note (RSM-TN) documents the effects of increased sediment loading to the Missouri River on bed elevations in the lower 498 miles. This was accomplished using a one-dimensional (1D) HEC-RAS 5.0.7 sediment model.

Water Policy ◽  
2015 ◽  
Vol 18 (3) ◽  
pp. 619-634 ◽  
Author(s):  
Robert R. Hearne ◽  
Tony Prato

The Missouri River is the longest river in North America and flows from the semi-arid western states to the relatively moist Midwest. An integrated system of large reservoirs, constructed in the mid-20th century, provides important water storage, hydroelectricity and flood control benefits. This system has been managed by the US Army Corps of Engineers which has traditionally followed its original mandate to support navigation and flood control. As water uses and societal values have evolved, the management of the river has slowly evolved, and the Army Corps of Engineers has adopted adaptive management to incorporate biological uncertainties into its decision-making. Other evolution, including the incorporation of economic incentives into water management, has failed to occur.


2021 ◽  
Author(s):  
Paul Hamilton ◽  
Lihwa Lin ◽  
Seth Jones

This US Army Corps of Engineers (USACE) Regional Sediment Management (RSM) initiative considered alternatives for shoaling reduction in the Gulf Intracoastal Waterway (GIWW) in the vicinity of Caney Creek near Sargent, TX (Figure 1). Additionally, new beneficial use (BU) sites were considered along degraded islands adjacent to the GIWW with a threefold objective: increase the quality and quantity of habitat, reduce dredging cost via shorter pump distance, and reduce shoaling in the GIWW through East Matagorda Bay.


1964 ◽  
Vol 1 (4) ◽  
pp. 215-226 ◽  
Author(s):  
W G Brown

Calculations using the Neumann solution (as modified by Aldrich) and thermal properties of soils (obtained by Kersten) show that the frost penetration depth for the same freezing index for essentially all soils with any moisture content and for dry sand and rock varies by a factor of about 2 to 1. The extremes calculated in this way bracket the experimentally determined design curve of the US Army Corps of Engineers and give it theoretical support. The theoretical calculations and additional experimental data are used as a basis for a small alteration in the slope of the design curve. This modified design curve is recommended for field use because of (1) inherent imperfections in existing theory and (2) practical limitations to precise specification of field conditions.


1949 ◽  
Vol 14 (4Part1) ◽  
pp. 300-310 ◽  
Author(s):  
Paul L. Cooper

One of the consequences of the Missouri Basin development program will be the virtual obliteration of the Missouri River between Yankton, South Dakota, and the Montana-North Dakota line. The lakes to be created by the various dams proposed or under construction by the Army Corps of Engineers will inundate all but short stretches of the terraces on which are situated literally hundreds of fortified and unfortified earth-lodge villages and other, earlier, occupational sites. Situated near the northern limit of agriculture but heavily populated by sedentary, horticultural people for a period of several hundreds of years, this anthropologically fascinating area has been barely touched scientifically.


2015 ◽  
Vol 35 (2) ◽  
pp. 196-208 ◽  
Author(s):  
Julie Dean Rosati ◽  
Katherine Flynn Touzinsky ◽  
W. Jeff Lillycrop

2017 ◽  
Vol 8 (1) ◽  
pp. 125-151 ◽  
Author(s):  
Eric M Gagnet ◽  
John M Hoemann ◽  
James S Davidson

Over recent decades, three distinct methods have evolved that are currently being used to generate resistance functions for single-degree-of-freedom analyses of unreinforced masonry walls subjected to blast loading. The degree of differences in these resistance definitions depends on whether the wall is assumed to be simply supported or whether compression arching forces result from rotation restraint at the supports. The first method originated in the late 1960s as a result of both experimental and analytical research sponsored by the US Department of Defense. That method, referred to as the Wiehle method, is the basis of Unified Facilities Criteria 3-340-02 and other derived analytical software such as the Wall Analysis Code developed by the US Army Corps of Engineers, Engineer Research and Development Center. The second method is based on elastic mechanics and an assumed linear decay function that follows and is the basis of the widely used Single-Degree-of-Freedom Blast Effects Design Spreadsheets software distributed by the US Army Corps of Engineers, Protective Design Center. The third method is largely based on concrete and masonry behavioral theories developed by Paulay and Priestly in the early 1990s. This article systematically compares the resistance methodologies for arching and non-arching scenarios, demonstrates the implications by plugging the disparate resistance functions into blast load single-degree-of-freedom models, compares the analytical results to full-scale blast test results, and offers conclusions about the accuracy and efficacies of each method.


Risk Analysis ◽  
2012 ◽  
Vol 32 (8) ◽  
pp. 1349-1368 ◽  
Author(s):  
Matthew Wood ◽  
Daniel Kovacs ◽  
Ann Bostrom ◽  
Todd Bridges ◽  
Igor Linkov

Sign in / Sign up

Export Citation Format

Share Document