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<br /> <br /> <br />NO SUBTITLE <br /> <br /> <br />DRAFT <br /> <br />AL REPORT STANDARD TITLE PAGE <br />3. RECIPIENT'S CATALOG NO. <br /> <br />'08010 (4081) <br />Bureau ot aeel&lb&Uon <br />t. RE~T NO, <br />I <br /> <br />Union Avenue Dam <br />Boatchute Study <br /> <br />6. <br /> <br />RMtNG ORGANIU,TION CODE <br /> <br />0-3750 <br /> <br />7 AU"tMQllIS) . <br />C8SSItl l\Iumpp, Clifford A. Pugh, <br />and Jerry Fitzwater <br /> <br />B. PERF"ORMING ORGANIZATION <br />REPOAT NO. <br /> <br />~ <br />/ <br /> <br />R <br /> <br />t. PERFORMING ORGANIZATION NAME ANO ADDRESS <br />Bureau of Reclamation <br />Denver Office <br />Denver CO 80225 <br /> <br />10. WORK UNIT NO. <br /> <br />11. CONTRACT OR GRANT NO. <br /> <br />. SPONSORING AGENCY NAME AND AC RESS <br /> <br />13. TYPE OF REPOFlT ANO PERIOD <br />COVERED <br /> <br />Same <br /> <br />14. SPONSORING AGENCY COOE <br />DIBR <br /> <br />15. SUPPLEMENTARY NOTES <br /> <br />Microfiche and hard copy available at the Denver Office, Denver, Colorado. <br /> <br />16. ABSTRACT <br /> <br />Hydraulic jump-type energy dissipators are a safety hazard to recreational boaters. The Union <br />Avenue dam on the South Platte River was studied to improve boater safety. One alternative was <br />to construct a series of boatchutes each with a drop of 2 to 4 feet to handle the entire 15-foot head <br />drop. The Colorado Water Conservation Board hired Wright Water Engineers to design a series of <br />boatchutes for the Union Avenue dam site. Reclamation built and tested a hydraulic model to refine <br />designs of the boatchutes, to optimize boating flows, and to study sedimentation conditions at the <br />city of Englewood's water intake structure. In addition, floodflows through the modified structure <br />were studied. The model study resulted in the development of an improved boatchute design. A <br />design procedure for employing the boatchute design at other sites was suggested. A modification <br />to the Englewood intake structure is suggested which should improve sluicing of sediment while <br />ensuring boater safet)i. The modified structure will pass the U.S. Army Corps of Engineers 100- <br />year flood of 16,400 fl'/s without the present flood control channel of the river. <br /> <br />17. KEY WORDS AND DOCUMENT ANALYSIS <br /> <br />a. OESCR IPTORS-- <br /> <br />Boater safety Ihydraulic jump lsediment siuicing Ihydraulic modeling <br /> <br />b. IOENTIF IERS-- <br /> <br />South Platte River Ihydraulic jump Iwhite water boating <br /> <br />c. COSATI ~1~ld/Grol.lp <br /> <br />COWRR: <br /> <br />SRfM: <br /> <br />lB. DISTRIBuTION STATEMEJIlT <br />A1,'ajlabfe~t"e National TeCh~lln(OrmOtion_ Ser1,'ice':\.OArotlons <br />O",,;slon.S 5 Port Royol Road, nt(I~ld. Vlrtlnio 221tf'h... <br />I / <br /> <br />19. SECURITy CLASS ,. NO. OF PAGE <br />(THIS AEPORTJ ._____ <br />UNCLASSfF/EO <br />20. SECURITy CLASS 22 <br />(THIS "AGE) <br />UNCLASSfF/EO <br />