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<br /> <br />4 <br /> <br />ENGLEWOOD INTAKE STRUCTURE <br />Current operation of the Englewood intake has the radial gate wide open when flow <br />rates In the rIver exceed 300 cfs. Mr. 6111 Taggart of Mclaughlin Water Engineers, <br />an engineering firm employed by the city of Englewood, has suggested that a solid <br />wall be used instead of an open barrier to separate boaters from the intake. This <br />comment was made by Ron Rossmiller because Mr. Taggart was out of town and not <br />able to attend the meeting. <br /> <br />This concept was tested with various flow rates and gate settings with the following <br />results. With the open barrier and the radial gate wide open, boats were drawn <br />over to and held against the barrier at most flow rates. <br /> <br />A piece of plexiglas was inserted in the model adjacent to and on the river side of <br />the present model barrier along the entire length of the intake channel, but with <br />about a la-feet (prototype) opening just upstream of the existing dam crest. At <br />most flow rates the boats floated along the wall but then would get drawn over and <br />held against the barrier just upstream of the dam crest. This is not satisfactory. <br /> <br />A piece of metal was inserted into the IO-feet (prototype) long opening on the intake <br />side of the model barrier. This closed off the opening in the downstream direction <br />of flow. The present model barrier angles slightly towards the river at its down- <br />stream end such that about a 2-feet (prototype) gap exists to allow any debris in <br />the intake channel to flow through the boat chute. This solved the boating problem <br />because at all flow rates, the boats floated along the wall and entered the boat <br />chute without any tendency to veer over to the intake. <br /> <br />This idea has merit and should be investigated further. A possible problem exists <br />at the upstream end of the solid wall. Flow velocities should be higher in the intake <br />channel which will help to sluice sediment through the intake channel. However, an <br />open barrier will still be needed upstream of the solid wall to separate boaters <br />from the intake channel. Flow velocities at this location must be studied to insure <br />proper placement of the barrier. <br />