FLOOD06493

• County: Phillips
• Community: Paoli
• Stream Name: North Fork Frenchman Creek
• Basin: South Platte
• Title: Floodplain/Flood Control Project Feasibility Study
• Date: 9/1/1991
• Prepared For: Phillips County
• Prepared By: Charles F. Leaf, PE
• Floodplain - Doc Type: Floodplain Report/Masterplan

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13

with a dike at a location near Cross-Section 4 at the maximum
elevation of the super-elevated portion of U.s. Highway 6.
Table 2 summarizes hydraulic design features of Alternative 2.
3. Alternative 3 is essentially the same as Alternative 2, except
that the flow capacities of the North Fork Channel .and bridge on
County Road 21 would be scaled back. The flowline profile would
be improved as shown in Fi9ure 5. However, the North Fork Channel
between the B.N.R.R, bridge and County Road 21 would be excavated
to a bottom width of 50 feet rather that 100 feet for Alternative
2 (Figure 3). Soil excavated from the North Fork Channel would be
used for approaches to the new County Road 21 bridge and for raisin9
the elevation of the east-west county road between County Roads
21 and 23. All other features would be the same as discussed in
Alternative 2. Table 3 summarizes the hydraulic design features
of Alternative 3.
Figures 7 and 8 show approximate flood areas for Alternatives 1 and 2
respectively. Approximate flooded areas for Alternative 3 would also be as
shown in Figure 8.
Flood profiles for each alternative are shown in Figures III-C and III-D,
APPENDIX III.

PRELIMINARY COST ESTIMATES

Estimated costs for Alternatives 1, 2, and 3 are summarized in Tables 4,
5, and 6, respectively. Theses costs are adequate for planning puposes only.
Additional site specific engineering data will be necessary before more
detailed and accurate project costs can be determined. Not included in the
estimates are land acquisition costs for the proposed improvements.