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<br />& <br /> <br />CI(y 0/ Littleton <br /> <br />,'~ <br />(~,0) <br />~~ <br /> <br />M"'~sey [XCl\V <Jfl(j 5.JCD (Soulh) M<y:X Dralf~'\VCly P1annng UDeklle <br />Conceptual Desian Report <br />Febr~ 2006 <br /> <br /> ummarv 0 serva Ions <br /> Discharge Max. Velocity Max. Flow Approx. Depth of Incised Street Overtopping Depth <br /> De th Channel # Flooded <br />Reach From/To Ownership AveragE 10- 100- 10- 100- 10- 100- Estimated Structure, Comments <br /> Slope Year Year Vear Year Year Vear 0-3ft 3-6 f1 6-91 9-12 ft 5-Year 100-Year Return during <br /> (ft) (ft) Period 10o-Vear <br /> (cis) (cis) (Ips) (Ips) (ft) (ft) (Years' <br /> CarrSt <br /> 10-25 <br /> Cody SI Carr St 1.1 Cody SI 4 Houses Channel is heavily vegetated in the eastern <br />3 Carr to Garrison Private 2.2% 108 242 6,6 7,1 6,8 7,5 X 0.6 Cody St 1.4 2,5 lOut portion of the reach. Channel is less vegetated <br /> Dover 5t Dover 51 1.2 Dover 51 <br /> 0.4 Estes Ct 1.0 2-5 building and incised in the western portion. <br /> Estes Ct <br /> 10-25 <br />SJCD. (S,,-~IN Tributary. N."-.,2.... __._ . .b< .. <br /> - .---- . '-.. - - ~~.- <br />1 Confluence to Ken HOA 0.7% 121 283 6,3 8,3 3.8 4,7 Reach contains outlet from culvert under Ken <br />Carvt Carvl and is stable. <br />2 Ken Caryl to Kipling Jefferson Co. NA 99 223 NA NA NA NA Reach is characterized by a detention pond <br />and Private unstream of Ken Caryl. <br /> Kipling to Storm Jefferson Co. A detention pond exists between Kipling and <br />3 NA 99 223 20,8 21.4 2.3 2.4 4 Houses Jellison. Between Storm Mountain and <br /> Mountain and R.OW, Jellison, drainaae flows alona streets. <br />SJCD_(South) Nor11l,.Tributary -- - . <br /> '-~~n -~......- _n --~,- -_.,--~ --.---- ,-,.,' <br /> Centennial <br /> South Platte Park to Water and Concrete drop structures and rip rap lining exist <br />1 S. Platte Canyon Sanitation 0.2% 437 1054 7.9 10.4 7,5 8.9 within the reach. The 0.2% accounts for the <br /> Rd. District! drop structures. <br /> Private <br />2 S. Platte Canyon to Private 1.7% 388 912 7.4 9,2 4.2 4.6 X Short reach between culvert outlet downstream <br />Sheridan Ct. of Sheridan and S. Platte Canyon Rd. <br /> The channel discharge enters a culvert at Ken <br /> Caryl during smaller storm events and outlets <br /> Sheridan Ct. to Ken 7 Houses downstream of Sheridan. In this reach, <br />3 Caryl R.OW, t.5% 266 731 5,8 7.6 2,2 3.0 2 Out drainage flows along the roads. The 1.5% <br /> buildings slope represents that of the roadway flow path. <br /> Detailed elevations might show that the houses <br /> are not in the 1 OO-year floodolain. <br /> An improved channel and a series of check <br /> Kendall Blvd Kendall structures exist between Ken Caryl and <br />4 Ken Caryl to Pierce Private 0.8% 345 755 7,5 6.6 7,7 7,3 Kendall 1.2 Blvd 2-5 Newland. The 0.8% slope accounts for the <br />2.4% Blvd 0.1 Newland St Newland structures. No check structures exist in the <br /> 0,9 St 10-25 Newland to Pierce segment, which has a <br /> concrete low flow channel and a slooe of 2.4%. <br /> <br />S <br /> <br />Table B-1 <br />fOb <br /> <br />r <br /> <br />0\ <br /> <br />B-4 <br />