Laserfiche WebLink
<br />Table 3 <br />P2RTINENT DATA <br />CHERRY CREEK CHANNEL IMPROVEMENT <br /> <br />Item <br /> <br />4B <br /> <br />4A <br /> <br />Reach <br />lS. <br /> <br />3B <br /> <br />1! <br /> <br />Length in feet 17,400 13,500 7,600 7,800 12,500 <br />Bottom width in feet 88 90 70 30 30 <br />Side slopes Vertical 1 on 2 1 on 2 1 on 2 1 on 2 <br />Berm height in feet 0 8 9 10 10 <br />Berm width in feet 0 24 32 50 0 <br />Berm slopes o 1 on 50 1 on 50 1 on 50 0 <br />Design depth in feet 17.5 12.0 14.0 14.0 10.0 <br />Low-flow channel capacity <br />in cubic feet per second 21,000 10,000 10,000 5,000 5,000 <br />Design discharge in cubic <br />feet per second 21,000 20,000 20,000 11,000 5,000 <br />Channel velocity in <br />feet per second 16 14 17 14 10 <br />Berm velocity in feet <br />per second 0 6 6 5 0 <br />Riprap <br />Location Bottom Slopes Slopes Slopes Slopes <br />Thickness in inches 18 24 24 24 18 <br />Filter layer in inches 6 6 6 6 6 <br /> <br /> DROP STRUCTURES <br />Structure Location :!IP!. Drop in feet <br />1 174+00 Gabion 5.8 <br />2 235+00 Gabion 11.6 <br />3 309+00 Gabion 15.4 <br />4 385+00 Gab ion 6.9 <br />5 588+00 Existing 12.3 <br />6 Goldsmith Gulch Gabion 7.0 <br /> <br />f. Alternative channel improvements. In the event that <br />local interests are not willing or able to provide the necessary <br />local cooperation for the Cherry Creek channel, it would be <br />limited in size to that needed for Cherry Creek Reservoir opera- <br />tion. A 10-foot vide and 10-foot deep channel with 1 on 2 side <br />slopes would be constructed between the Cherry Creek Dam and <br />Speer Boulevard. Between Speer Boulevard and the South Platte <br />River, the existing channel walls would be retained. The channel <br />bed yould be shaped and paved with riprap. <br /> <br />38 <br /> <br />3080 <br />