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I I I II I I I I I I I I I I I I I I I 23 completed Ketner Reservoir Improvements, the hydraulic characteristics of the existing C&.S railroad culvert, and only that storage which exists within the f ,I" , I L-~~ .: ,~-_..../ I;---:>t". f100dway upstream of the railroad, the water surface elevation Immediately .' t. ~ upstream of the railroad culvert Is decreased to 5358.2 from the water surface elevation of 5365.0 reported In the 1986 study. 12. Based on this more In-depth study, there Is a reduction of 6.8 feet in the eleva- tion of the 10o-year floodplain for the land located between the C&.S railroad and Wadsworth Parkway, both north and south of Big Dry Creek. 13. Based on the water surface prof1les generated by the HEC-2 program, using as input data the results of the HEC-l modeling, the water surface elevation just upstream of Wadsworth Parkway Is 5359. O. This Is a reduction of 6.0 feet from the 1986 FHAD study and leaves\g of the Bruchez property outside of .1:,_.- this revised 10o-year floodplain. 14. The proposed Master Plan for Big Dry Creek envisions four 120-inch reinforced concrete pipes to be placed under the C&.S Railroad in addition to the existing concrete arch culvert. This additional ouflow capacity wl11 reduce the water surface elevations to an even greater extent than indicated in this study. There- fore, when the Master Plan Is ImPlemented~;I~ all of the Bruchez property / '--.----- ~ ~, ; ~_ 7j u ,::)_1-.. ,I...f- ',~-' .~' . - f . _ will be located outside of the floodplain. L~ ",J."':lh- ..(-;':;,~, 15. The newly published FEMA flood insurance study for Big Dry Creek Indicates that ~, 5.e"J.... I q$7 · the 10o-year floodplain elevations proposed in this study are equal to or yr' greater than the elevations shown In the FEMA study for this reach of Big Dry Creek. ~ ~ J/J ~('~~ !ve- pEf114. 0 ~ ~~. II