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I I I I I I I I I I I I I I I I I I I 6 be free of attacL Greg Moore of the local USACE office Indicated that 3-feet deep scour holes were forming at Brown Ditch about ISO to 200 feet downstream of the boatchutes. These holes have caused undercutting of the river banL Both he and Ben Urbonas recom- mended moving the boatchute about 20-feet away from the west banI<: and angling the boatchute slightly towards the middle of the river. Cliff Pugh of the USBR said that, with the additional funds recently approved for the model study, he would modify the existing model to Include the following changes: 1. Add the wedge material to the model. 2. Move the location of the boatchute at the downstream embanl<:ment crest. 3. Use the same configuration for this boatchute as that at the existing USACE dam crest. The group decided that, because of the decrease in wall height in the exit channel downstream of the radial gate, a chain linl<: fence or other means might be consi- dered to I<:eep boaters out of this channel. Bill McCormici( of the city of Englewood described present operation and mainte- nance of their intal<:e. He uses the low submerged wallin the intal<:e channel to stand on while he sluices sand and moss from the intal<:e with a high pressure hose. Once a weel<: he opens the radial gate for about 20 to 30 minutes to sluice the sand in the Intal<:e channel. When the flow in the river is high, from 300 cfs to 500 cfs, he opens the radial gate to the fully opened position. However, even with the radial gate fully opened, when there 15 1,500 cfs In the river, the upper two of the five intal<:es are clogged with sand and he needs to sluice them out. He has problems with sand, algae, and moss and problems with ice during the winter. He also asl<:ed If the flow depths in the river will be higher; wm he need to add addi-