| Repair, Evaluation, Maintenance, and Rehabilitation Research Program: The Effects of Vegetation on these Structural Integrity of Sandy Levees |
AUG 91 |
149 pages |
| Authors:
Donald H. Gray; Anne MacDonald; Thomas Thomann; Imogene Blatz; F. D. Shields Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
 | The purpose of this study was to investigate the relationship between vegetation and the structural integrity of river levees. A specific objective was to determine the distribution of roots within levee embankments, and how these roots alter properties of levee embankments and affect their resistance to mass wasting, surficial erosion, piping, etc. With this information, engineering criteria can be developed in the future that may allow additional vegetation to remain ... |
|
| Environmental Effects of Dredging. Economic Optimization of Confined Disposal Area Dimensions |
MAY 89 |
12 pages |
| Authors:
F. D. Shields Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| The purpose of this technical note is to present preliminary information on selecting dimensions for confined dredged material disposal facilities to obtain mininium cost for land and dikes. (AN) |
|
| Predicting Internal Roughness in Water Mains |
FEB 1988 |
27 pages |
| Authors:
Thomas M. Walski; Wayne W. Sharp; F. D. Shields Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| A method is presented for predicting the Hazen-Williams C-factor for unlined metal water mains as a function of pipe age. The method has two steps: (a) finding the growth/rate of internal roughness, alpha, for the water main using either historical C-factor data or water quality data; and (b) using predictive equations for an estimate of a future C-factor. The predictive equations presented in this report were derived using linear regression ... |
|
| Management of Environmental Resources of Cutoff Bends Along the Tennessee-Tombigbee Waterway |
NOV 87 |
|
| Authors:
F. D. Shields Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
 | Construction of the Tennessee-Tombigbee Waterway (TTW) involved construction of a navigation channel across the necks of 35 meander bends of the Tombigbee River. The cutoff bends, or bendways, constitute a valuable resource that the Corps of Engineers is committed to maintain. This study was conducted to provide a rational basis for refinement of the management strategy for the 30 TTw bendways located downstream of Aberdeen Lock and Dam. The five ... |
|
| Environmental and Water Quality Operational Studies. Environmental Features for Streamside Levee Projects |
AUG 85 |
|
| Authors:
James R. Hynson; Paul R. Adamus; Joseph O. Elmer; Terrance DeWan; F. D. Shields Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| This study provides designers of levee projects with guidance for incorporating environmental enhancement features into project design and maintenance. Forty-six environmental features were identified by information review as having potential to improve fish and wildlife habitat, recreational use, and esthetic qualities of lands and water associated with levee projects. Features include general items for design and maintenance, as well as specific measures for fish and wildlife habitat, recreation, and aesthetic ... |
|
| Environmental and Water Quality Operational Studies. Environmental Features for Streambank Protection Projects |
NOV 84 |
|
| Authors:
J. E. Henderson; F. D. Shields Jr; ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS ENVIRONMENTAL LAB
|
| This report provides guidance for incorporating environmental considerations into streambank protection projects. The stability of the stream- banks of a channel is related to both site-specific and basinwide stream reach factors. Streambank erosion or failure is a natural fluvial process that is often accelerated by changes in gotechnical or hydraulic factors and especially the activities of man, e.g., reservoir construction or land use changes. Streambank protection projects stabilize the streambank, ... |
|
Reports by Author
