WSP10478

• File Number: 8407.600
• Description: Platte River Basin - River Basin General Publications - Kansas General Publications
• State: CO
• Basin: South Platte
• Water Division: 1
• Date: 12/1/1942
• Author: Kansas Board of Agri
• Title: Report of the State Board of Agriculture - Volume LXI - Progress on a State Plan of Water Resources Development
• Water Supply Pro - Doc Type: Report/Study

0'02108

30

Kansas State Board of Agriculture

A ~imilar procedure will need to be followed in determining the
feasibility of re~ervoirs for flood control on tributaries of the Cotton-
wood river. It will, however, be somewhat more complicated be-
cause of the necessity of considering not only each of the proposed
reservoirs separately, but also all 01' any number of them operated
together as a system. As before, ~everal sets of preliminary de-
signs and estimates of cost will need to be made. The extent to
which such reservoirs may be justified as units in a plan for the
Neosho basin will depend ag'-lin upon a favorable comparison of
costs and benefits.
Upon completion of the model which is being constructed of a
portion of the Cottonwood ri,'er, a series of tests must be made to
determine what reduction in flood stages may be expected as a re-
sult of channel straightening. This also involves several alternate
combinations of which the relative effectiveness must be analyzed
and translated into terms expressing the amount of benefits in
money. Estimates of cost for channel straightening will be based
on plans developed from information obtained in making tests of
the model. The usual comparison of total costs and benefits will
reflect which plan is the most economical and whether the cost of
this method of control would be justified by the benefits.
In determining upon a plan for flood control on the Cottonwood
river, consideration must be given also to all logical combinations
of tributary reservoirs and channel improvements. The costs and
benefits of various combinations must be computed. Comparison
will be made of these and results which can be obtained by either
reservoirs or channel l'traightening alone. Many variable factors
are thus involved in formulating a plan to deal effectively and eco-
nomically with the complex flood control problems of this stream
and a considerable amount of work remains to be done on these
phases of the problem now being studied.
There remain to be considered also, the problems along the upper
branch of the Neosho river above the mouth of the Cottonwood. If
it appears that the Council Grove reservoir under consideration by
the Army Engineers, will be a part of the plan for the basin, studies
as to this section of the river will be directed primarily toward deter-
mining what supplemental channel improvement may be needed and
justified. The plans wiU be developed as is now being done for the
Cottonwood river. A complete analysis wiJI be made to determine
the economic feasibility of proposed improvements which are found
to be physically effective.

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