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<br /> . J> . " <br /> Table I. Summary of Discharges (Cont'd) <br /> Drainage Area Peak Discharges (Cubic Feet Per Second) <br /> Flooding Source and Localion (Square Miles) to-Year 50- Year IOO-Year 500-Year <br /> Cooper Slough (Cont'd) <br /> At the Colorado and Southern Railroad 0.60' 246 1,260 1,860 3,033 <br /> At Vine Drive 0.25' 250 1,250 1,868 3,050 <br /> Sherry Olive Overflow <br /> At Sherry Drive -- 2 156 168 172 176 <br /> State Highway 14 Overflow <br /> 500 Feet Upstream of Confluence with Lake Canal -- 2 175 1,089 1,333 1,638 <br /> 3,200 Feet Upstream of Confluence with Lake Canal -- 2 185 1,420 2,240 3,800 <br /> Spring Creek <br /> At Confluence with Cache La Poudre River 10.9' 1,250 1,726 1,944 2,781 <br /> Upstream of Arthur's Ditch 5.73 754 1,465 1,960 3,094 <br />- Upstream of Drake Road 4.0' 343 1,155 1,540 2,446 <br />w <br /> Downstream of Horsetooth Road 1.623 343 682 879 1,319 <br /> Dry Creek <br /> At Confluence with Cache La Poudre River 65.0 660 1,860 2,700 5,600 <br /> At U.S. Highway 287 60.0 720 1,900 2,900 6,000 <br /> Boxelder Creek Overflow Channel <br /> At County Road 50 (WiIlox Lane) __4 695 1,930 2,990 5,090 <br /> South of Vine Drive -- 4 521 1,108 1,568 2,568 <br /> Upstream of Convergence with Boxelder Creek -- 4 160 455 687 1,177 <br /> <br />'Drainage area is only that portion of the Cooper Slough Basin that is south of the Larimer-Weld Canal. All flows north of the Canal <br />assumed to be intercepted by ponds and released at a controlled rate to the Canal. <br />'Not available. <br />3Includes the drainage area for the Canal Importation Basin-South, which is directly tributary to Spring Creek. <br />4Not determined. <br />