For an explanation of a reservoir system, let us look to a report issued in
August of 2002, by Engineering and Hydrosystems Inc. of Littleton, Colorado,
which explored sedimentation issues on the Niobrara and Missouri Rivers.
"Reservoirs interrupt the natural transport of sediment along river systems,
trapping sediment in the reservoir upstream of the dam. Adverse long-term
consequences include reduction in the reliability of water and power supply, and
environmental impacts along the river system both up-and downstream of the dam." |
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| As the report points out, when the reservoir system was created dams were
designed with a lifespan. The project followed the stages of planning,
design, construction, operation and maintenance, and decommissioning.
Eventually, the reservoir was expected to fill with sediment, with the only
option left being to abandon the project. However, what MSAC supports and Corps studies are exploring is a "Life Cycle
Management" approach to the reservoirs. This approach follows a circular
pattern which sustains the water resource and dam system. "The process
commences with planning, and progresses to design, construction and operation
and maintenance, as before. However, the operation and maintenance are
conducted in a manner that will lead to perpetual (sustainable) use of the
infrastructure and resource."
This is what we want to see achieved: sustainable reservoirs along the
Missouri River that continue to provide the benefits of power generation, flood
control, quality drinking water and recreation for future generations.
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Oahe Dam System near Pierre
Photos by the South Dakota Department of Toursim
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