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<br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />,. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br />. <br /> <br /> FLOODING SOURCE FLOOD PLAIN DATA FLOODWAY DATA') <br /> , CROSS STATION Q100 STREAM 1 00- YR 100-YR FLOODWAY WIDTH (FT)(2) FLOODWAY <br /> IDENTIFICATION BED ELEV. FLOOD ELEV. E LEV. <br /> SECTION (FT) (CFS) (MSL) (MSL) WIDTH (FT) L. BANK R BANK TOTAL (MSL) <br /> 97 346+00 1735 5822.2 5841. 0 407.6 <br /> 98 348+60 1735 5825.8 5841 .0 280.4 <br /> 99 351+00 1735 5829.7 5841.0 109.0 <br /> 100 353+00 1735 5832.7 5840.9 82.2 <br /> 101 354+62 1735 5835.6 5840.9 79.9 <br />Upstream Limit of Backwater 102 356+00 17 3 5 5837.6 5841 .8 91 .2 <br />Effects Due to Culvert at <br />Station 342+00 <br />North Hi9hlands Lo 0 p - Begin 143 549+40 1015 5694.8 5720.0 564.2 <br />Backwater Condition Due to 144 553+00 992 5702.8 5720.0 337.3 <br />Cul vert <br /> 145 556+60 992 5709.7 5720.0 150.2 <br /> 146 558+34 992 5714.0 5719.8 29.7 <br />Upstream Limit of Backwater 147 561+20 992 5720.8 5725.6 33.3 <br />Effects Due to Cul vert at <br />Station 549+40 <br />Broadway - Begin Backwater 226 833+20 1799 5577.7 5616.0 379.3 <br />Cond it i on Due to Culvert 227 837+20 1336 5591 .7 5616.0 274.2 <br /> 228 840+60 1 336 5598.4 5616.0 133.7 <br /> 229 841+85 1336 5603.0 5616.0 131 .6 <br /> 230 843+00 1336 5605.0 5615.7 39.0 <br />Upstream Limit of Backwater 231 847+40 1336 5617.5 5624.0 33.4 <br />Effects Due to Culvert at <br />Station 833+20 <br /> <br />(1) Floodway data are based on encroachment causing up to 0.5 ft. vertical rise in the 100-year flood elevation. <br />Where floodway data are not given they shall be assumed to be identical to the flood plain data. <br /> <br />(2) Left and right distances are measured from the center of the flowline of the channel looking downstream. <br /> <br />IJ Jack ~:.~~~ ~~pany <br /> <br />.,..-" ""~"VOSf...,., ...GtE...."'. .O'(J....."..,..: <br /> <br />URBAN DRAINAGE AND FLOOD CONTROL DISTRICT <br />FLOOD HAZARD AREA DELINEATION <br />DOUGLAS COUNlY <br /> <br />FLOOD PLAIN AND FLOODWAY REFERENCE DATA <br /> <br />CONT. <br /> <br />DAD CLARK GULCH <br /> <br />TABLE 4 <br />SHEET B <br />