d. Sedimentation of agricultural land, wetlands, and reservoirs;
e. Damage to stream-related infrastructure; and
f. Destruction of riparian habitat.
Probably the most certain path to an unsuccessful project is to fail to set a clear understanding of
the goals of the project. Goals provide the measure of success, and without unambiguous, measurable
goals the project cannot succeed.
Planning of the rehabilitation process, the second major element of Figure 2.1, requires the
definition of the project in terms of the size of the project, the time required for planning, design, and
construction, and in terms of fiscal limits of the proposed project. If the fiscal limits are too confining, no
project may be possible, or the goals of the project may be minimized to achieve only a limited goal.
Community input and review should seek to ascertain additional goals, concerns, and resources. The
planning process is the subject of many texts and papers, and it is not the intent of this manual to cover this
subject in detail. Suggested readings are Restoration of Aquatic Ecosystems (National Academy of
Sciences, 1992), Water Resources Planning (Grigg, 1985), and How to Save a River, A Handbook for
Citizen Action (Bolling, 1994). The primary purpose of the planning process for the subjects addressed
in this manual is to have definite, identified goals before the project design begins.
Analysis is the third major element of Figure 2.1. Analysis to support channel rehabilitation projects
involves: 1) evaluation of alternatives to reach project goals, 2) a systematic approach to assimilation of
the data and information necessary to make informed design decisions, and 3) the preliminary design
process. Figure 2.2 presents the analysis approach as a sub-element of Figure 2.1, and Figure 2.2 will
be discussed in Section 2.2.
The next step in the flowchart is the implementation of the project (Figure 2.1). The major elements
included in implementation are detail engineering design, construction, and inspection. Detail engineering
design would include, for example, computations of riprap size, structural design of drop structures, design
of safety features, or other specific details requiring engineering design and construction drawings.
Construction and inspection are not included in this manual, and are generally included in standard
guidelines provided by the agency funding the project.