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APPENDIX II A limited number of copies of this appendix has been produced for plannBY's, engineers, developers, and others conceJ:"lnecl .with the develop- ment of Sand Creek. It contains Elevat.ion-Peak Discharge Relationship Table" for the 500-, 100-, 50-, 25-, and 10..year frequency flood events which were analyzed for Sand Creek, East Fork of Sand Creek and the Center Tributary. Because of its detailed or technical nature, this appendix is not: attached to copies of the main report: for g,mera1 dis.. tribu.:ion. Elevation-Peak Discha:r>ge Relationships are based on flood routings using runoff computations for (1) existing :,and use and cover conditions in the watershed for March 1972, and (2) computations reflecting the runof:' conditions with projected developments expected by the yea.r 1990. Any channel modifications and/or physical changes within the adj,3.cent flood plain will alter the elevation-peak d':scharge relatiOl,ship. The water surface profiles will need to be revised in those particule.r areas where this occurs subsequent to March 1972. The tabulated information is intended for use in conjunction hi:l:h the water surface profiles (Main Report) and flood hazard maps (Appendix I). As a general guide for orientation purposes" the following desigr,ations are assigned to stream names, reach numbers, and cross-section :i dent ific ation: StJ:'eam Reach Cposs-Section Nalne Number Identificatiol' -- --- ---,,------ Sand Creek 1 M..150 thru ~1-039 Sand Creek 2 M..039, W-390 thru ;1-1 EO Sand Creek .j W-160 thru H..OIO East Fork 4 ~1-039, E-340 thru E..150 East Fork 5 E-150 thru E-010 Center Tributary 6 C-121 i:hru C-.OIO The mosiac sheet index for flood hazal'd maps with stn,am ar.d reach locations is shown on the following page. A similar ind,,>: with more detailed geographic data is included in Appendix .I. Elevation-Peak Disaha;r>ge Relationship Tables for the !iOO-" 100-, 50-, 25-" and 10-year frequ.ency floods are numbered respec- tively 1 thru 5. The surv"y, hydrologic, hydraulic, and other pertinent data and compu.:ations a1'e on file with the Soil Cons"rvation Service, U. S. Depar-:ment of Agl"icul ture, 2490 West 26th Avenue, Denver, Colorado 80211.