| The Application of Conceptual Models to Ecosystem Restoration |
FEB 2008 |
24 pages |
| Authors:
Craig Fischenich; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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 | In its report to the Chief of Engineers, the U.S. Army Corps of Engineers (USACE) Environmental Advisory Board (EAB) recommended that (USACE, EAB 2006): The Corps should encourage the explicit use of conceptual models to guide ecosystem restoration planning and implementation. Conceptual models should be required as a first step in the planning process, as they provide a key link between early planning (e.g., an effective statement of problem, need, ... |
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| Sediment Sampling and Analysis for Stream Restoration Projects |
SEP 2007 |
24 pages |
| Authors:
Craig Fischenich; Charlie Little; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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| Sedimentation processes, including erosion, transport, deposition, and consolidation and sorting, are critical considerations in evaluating stream stability and developing restoration designs. The form of a channel is a consequence of the magnitude, timing, and frequency of both the runoff and the sediment yield from the watershed. Sediments on the bed of the channel and the soils in the banks also play a role in defining channel form, as they establish ... |
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| Hydraulic Losses in River Meanders |
AUG 2007 |
6 pages |
| Authors:
Gary L. Brown; Ronald R. Copeland; Craig Fischenich; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
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| Energy losses along a channel reach occur from friction along the channel boundaries and bed surface and channel irregularities, obstructions, vegetation, channel meandering, and many other parameters of lesser importance. Conventional application of hydraulic computations between two cross sections requires that these losses be represented by the application of a resistance or roughness coefficient. These coefficients are determined empirically. Although much research has been expended developing relations for resistance due ... |
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| Vegetation Impacts Upon Stream Width |
AUG 2007 |
11 pages |
| Authors:
Craig Fischenich; Dinah McComas; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
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| Hydraulic geometry relationships are often used in the hydraulic design of channels for stream restoration projects. Hydraulic geometry theory is based on the concept that a river system tends to develop in a predictable way, producing an approximate equilibrium between the channel and the inflowing water and sediment (Leopold and Maddock 1953). The theory typically relates a dependent variable, such as width or slope, to an independent or driving variable, ... |
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| Recreation Enhancements for Urban Streams |
JUL 2005 |
10 pages |
| Authors:
Pam Bailey; Craig Fischenich; Julie Marcy; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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| The urban landscape can provide recreational opportunities by incorporating various features along urban streams and greenways. Recreational amenities increase local property values which in turn increases the tax base and offers important social benefits such as better health quality of life and an increased appreciation for nature and the environment. The Corps of Engineers (Corps) has provided recreation opportunities in urban settings in three ways as a part of Corps-operated ... |
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