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FLOOD03543
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FLOOD03543
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Last modified
1/25/2010 6:27:35 PM
Creation date
10/4/2006 11:50:36 PM
Metadata
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Template:
Floodplain Documents
County
Arapahoe
Stream Name
South Platte
Basin
South Platte
Title
Union Avenue Boat Drop
Date
1/1/1983
Prepared For
CWCB
Prepared By
CWCB
Floodplain - Doc Type
Easement
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<br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Mr. David W. Walker <br />October 30, 1989 <br />Page 6 <br /> <br />ENGLEWOOD INTAKE <br /> <br />The effects of the proposed modifications on the existing Englewood water supply intake <br />were the focus of much effort during the preliminary design and modeling processes. The <br />reason for this focus was the concern of Englewood over safety to the public while <br />maintaining suitable intake hydraulics and satisfactory operations in the future. This was <br />a result of past drownings and emergencies at the dam and some operational aspects of the <br />intake which were less than desired. <br /> <br />Included in the proposed modifications are changes to the existing dam crest, the addition <br />of the solid wall adjacent to (riverside) and along the entire length of the existing chute <br />wall upstream of the dam crest, and the open barrier upstream of the solid wall. <br /> <br />The intake operation during low flows will be similar to that at present. As at present, the <br />radial gate is set to obtain an upstream pool elevation of 5289.0 to 5289.5. The flow to be <br />diverted and the flow to be used for sluicing will enter the chute channel with the small <br />remaining flow exiting through the boatchute. Presently, the small remaining flow exits <br />through the 14-feet wide notch in the dam crest. <br /> <br />USBR personnel recommend that a solid wall be used upstream of the existing USACE <br />dam crest along the entire length of the city of Englewood intake structure for improved <br />operation and increased safety based on the results of the model study. Upstream of the <br />solid wall there will be the open barrier as used in the model study. It will extend <br />upstream along the same alignment as the solid wall and tie into the east bank or near the <br />east bridge abutment at Union Avenue. <br /> <br />SUBMITIAL OF DRAWINGS <br /> <br />The results of the model study have been incorporated into the preliminary design drawings <br />which are submitted as an attachment to this letter report. The final chute configuration <br />developed in the USBR laboratory has been used for each chute shown on the preliminary <br />plan. <br /> <br />The drawings represent preliminary engineering and cannot be used for construction <br />purposes. Final design work must test and evaluate all elevations, dimensions and layouts <br />as is normal with final engineering. Particular attention in final design must be paid to <br />safety and boater use of the public works to check out all aspects of the plan. This must <br />be a joint effort of all interested parties to address their competing concerns with primary <br />emphasis on boating safety, between river enjoyment, the functional intake characteristics <br />for Englewood, and public safety; realizing that accidents will occur and that the designer <br />
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