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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Pecos Street Crossi ng <br /> <br />The existing Pecos Street culvert is adequate to pass the lOO-year flood <br />flows; therefore, no modifications are recommended. <br /> <br />96th Avenue Crossing <br /> <br />The existing culvert under this new road has a discharge capacity of 200 cfs <br />which is less than one-half of the 10-year flood flow. One additional 5 foot CMP <br />culvert and a low dike will be required to increase the existing capacity to the 10- <br />year flood flow. Two 5.5 foot CMP culverts and a low dike will increase the exist- <br />ing capacity to the 100-year flood flow. Since very little extra cost will be in- <br />volved in providing 100-year protection, it is recommended that this crossing be <br />modified to pass the 100-year flood flow. <br /> <br />Aspen Street Crossi ng <br /> <br />This culvert is adequate to pass the 10-year fload flow; however, the <br />100-year flood will overtop the road. The consequences of overtopping are minor; <br />therefore, the only modification recommended is to provide riprap slope protection <br />downstream of the crossing. <br /> <br />Station 260 + 00 Culvert <br /> <br />This culvert has a discharge capacity of 110 cfs while the 10-year flood <br />flow is 400 cfs. It is recommended that 0 bypass chonnel be constructed to corry <br />300 cfs and allow the 100-year flood flows to overtop the area. <br /> <br />111-12 <br />