Hydraulic Design of Stream Restoration Projects

This document provides a systematic hydraulic design methodology to aid hydraulic engineers in the design of stream restoration projects. The objective is to achieve a channel design that fits into the natural system within the physical constraints imposed by other project objectives. In the Corps o...

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Bibliographic Details
Main Authors: Copeland, Ronald R, McComas, Dinah N, Thorne, Colin R, Soar, Philip J, Jonas, Meg M
Format: Report
Language:English
Subjects:
ALLUVIAL CHANNELS
ARMY CORPS OF ENGINEERS
BANKFULL DISCHARGE
BASE LINES
BED MATERIAL SAMPLING
CHANNEL FORMING DISCHARGE
CHANNEL STABILITY
CHANNELS(WATERWAYS)
Civil Engineering
DYNAMICS
EFFECTIVE DISCHARGE
FLOOD CONTROL
FLOOD DAMAGE RELIEF TECHNIQUES
Fluid Mechanics
GEOMORPHIC ASSESSMENT
GEOMORPHOLOGY
HYDRAULIC DESIGN
HYDRAULIC GEOMETRY ASSESSMENT
HYDRAULICS
Hydrology, Limnology and Potamology
IMPACT
ITERATIONS
METHODOLOGY
NUMERICAL METHODS AND PROCEDURES
SEDIMENT TRANSPORT
STABILITY
STREAMS
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Description
Summary:This document provides a systematic hydraulic design methodology to aid hydraulic engineers in the design of stream restoration projects. The objective is to achieve a channel design that fits into the natural system within the physical constraints imposed by other project objectives. In the Corps of Engineers, stream restoration projects are frequently associated with or part of a flood-control project. Thus, projects have more than one objective and compromises may be required to meet essential portions of each objective. The hydraulic design of a stream restoration project should provide for a channel that is in dynamic equilibrium with its sediment toad. A sound stream restoration design incorporates techniques from both fluvial geomorphology and physics. The study area to which these techniques are applied must extend beyond the limits of the project site to the extent that both the project's effect on the stream system and the stream system's effect on the project reach can be determined. The iterative systematic approach presented includes defining project objectives and constraints; determining appropriate hydrologic data; conducting a stability assessment of the existing stream system channel to establish baseline geomorphological conditions and to evaluate the effectiveness and geomorphological impacts of project alternatives; and a methodology for hydraulic design of project features and for assessing hydraulic and sediment transport impacts of alternatives. Appendices provide useful tools and examples for use in this methodology. --Original contains color plates: All DTIC reproductions will be in black and white. Prepared in cooperation with Univ. of Nottingham, Nottingham, UK.