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<br />762 JULY 1977 H
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<br />a 12.5% opening at a reservoir level of EI. 966.20 ft (294.5 m).
<br />. 4. It was see~ that a 25-ton trash-rack having a 23% open area was displa""
<br />In the model. With 50% and 75% open areas, the stable weights of the trash-rad
<br />were found to be 12.5 tons and 10 tons, respectively.
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<br />JULY 1977
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<br />13080
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<br />HY7
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<br />JOURNAL OF THE
<br />HYDRAULICS DIVISION
<br />o;ck S;~ds '2.36-t./f~4-,
<br />MODEL STUDIES OF DENVER WHITEWATER CHANNEL
<br />.
<br />
<br />By William P. Simmons,' F. ASCE, Thomas H. Logan.' Richard A.
<br />Simonds,' Members, ASCE, and Riehard J. Brown.
<br />
<br />INmoolJCnON
<br />
<br />,oJ
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<br />The South Platte River rises in the Rocky Mountains southwest of Denver,
<br />Colo., and follows a H)-mile (l6-km) path through the city. As a result of overuse
<br />and inattention. the river and its environs have deteriorated through the city
<br />and are scarred with industrial and municipal refuse. But this is now being
<br />changed. In June, 1974, the Platte River Development Committee (PRDC) was
<br />, formed under the chairmanship of Joseph Shoemaker to plan and develop parks
<br />along the river within the city. As part of this redevelopment and beautification
<br />program, a whitewater boating channel was proposed. The selected site in the
<br />Cenlral Section had sufficient drop for a good recreational channel and featured
<br />a low dam that impounds water for cooling at a public Service Company of
<br />Colorado electrical generation plant (Figs. I and 2).
<br />An international search for information on how to design a suitable recreational
<br />whitewater boating channel indicated that only one "artificial" chute had ever
<br />been constructed..,-the Augsburg, Germany, Olympic (1972) Canal and Kayak
<br />Chute (I). Several other chutes were known to have been proposed. but none
<br />had been designed or built. Faced with little precedent and no actual chute
<br />design experience. the PRDC approached the Bureau of Reclamation for space
<br />and water supply facilities at their Denver, Colo.. Hydraulics Laboratory for
<br />construction of a model. The request was granted, and suitable space. heating,
<br />lighting, water supply. and measuring facilities were made available.
<br />The design, construction, operation. and interpretation of the model was done
<br />on a voluntary, nonworking hours basis by interested members of the Colorado
<br />White Water Association, with principal efforts by the writers and Ron Mason.
<br />Model construction started in October 1974, and all revisions and testins were
<br />Note.-Discussion open until December I, 1m. To extend the closing date one month.
<br />il written request must be filed with the Editor of Technical Publications. ASCE. This
<br />paper is part of the copyrighted Journal of the Hydraulics Division, Proceedings of the
<br />American Society of Civil Engineers, Vol. 103, No. HY7, July, 1977. Manuscript was
<br />wbmitted for review for possible publication on February 9, 1976.
<br />IAsst. Chf.. Div. of General Research, Bureau of Reclamation, Denver, Colo.
<br />lGeneral Engr.. Div. of Dt.:sign. Bureau of Reclamation. Denver, Colo.
<br />'Hydraulic Engr" Div. of Design. Bureau of Reclamation. Denver, Colo.
<br />.General Engr.. Div. of Design, Bureau of Reclamation, Denver, Colo.
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