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<br />. <br />I <br />I <br />I <br />. <br />I <br />I <br />I <br />'1 <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />FLOODING SOURCE 10 YR FLOODPLAIN DATA 50 YR FLOODPLAIN DATA ~oom FLOODPLAIN DATA <br />IOENTlFICATION CROSS STATION 1 OISCHARGE' FLOOD DISCHARGE FLOOD FLOOD <br />~ECTIO^ EL EV. (m.s.l.) ELEV. (m.s.l) DISCHARGE ELEV. (m.s.!.) <br /> 49220 492+20 1130 5715.1 3550 5719.1 9100 5721. 7 <br /> 49505 495+05 1130 5721.6 3550 5724.8 9100 5728.6 <br />Bridge to Residences 49540 495+40 1130 5722.6 3550 5726.5 9100 5732 .7 <br /> 49890 498+90 1130 5730.3 3550 5733.3 9100 5737.6 <br /> 50210 502+10 1130 5739.9 3550 5743.6 9100 5747.5 <br /> 50515 505+ 15 1130 5749.2 3550 5752.7 9100 5756.9 <br /> 50860 508+60 1130 5762.7 3550 5766.3 9100 5770.0 <br /> 51065 510+65 1130 5771. 0 3550 5775.1 9100 5781.1 <br />Bridge (Local Access) 51129 511 +29 1130 5772.6 3550 5776.6 9100 5784.4 <br />Upstream Study Limit 51260 512+60 1130 577 6.0 3550 5779.7 9100 5786.3 <br /> DRY CREEK NO. 2 DITCH SPLIT FLOW PROFILE <br />Downstream Study Limit 6445 34+80* ALL FLOW N SOUTH 2680 5220.0 8850 5220.8 <br /> 3800 38+00* BOULDER C EEK MAIN CHANNEL 2680 5220.1 8850 5221.1 <br /> 7170 43+50* 2680 5223.6 8850 5225.2 <br />Downstream Side of Arapahoe Rd 7590 47+30* 2680 5228.1 8850 5228.9 <br />Upstream Side of Arapahoe Rd 7701 49+50* 2680 5232.9 8850 5233.5 <br /> 5400 54+00 1000 5233.0 7100 5234.0 <br /> 6000 60+00 800 5237.6 5700 5238.6 <br /> 6520 65+20 600 5241.9 4800 5242.7 <br /> 7050 70+50 400 5246.7 3400 5247.7 <br /> 7305 73+05 100 5249.1 800 5249.8 <br /> 10838 76+60 4980 ** 11500 ** <br /> <br />1 Stationing from mouth (feet). <br />* Stationing along Dry Creek No.2 Ditch profile reference line (feet). <br />** Upstream limit of split flow - see first page of this table for floodplain data for main channel. <br /> <br />GREENHORNE and O'MARA, INC. <br />Engineers . Architects . Planners . Surveyors . Phatogrammetrists <br />1325 ScM,th Cotorado BoulevCll'd.$uit. 405. Oenwr. Colanlldo 80222- (303) 758-5250 <br /> <br />URBAN DRAINAGE AND FLOOD CONTROL DISTRICT <br />BOULDER COUNTY <br /> <br />FLOODPLAIN REFERENCE DATA <br /> <br />TABLE <br />3 <br />(ContJ <br /> <br />SOUTH BOULDER CREEK <br /> <br />16 <br />