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<br />. <br /> <br />. <br /> <br />2. Rescue Compatibility. Boat rescue is difficult due to the concrete <br />retaining walls on both banks of the river. <br /> <br />3. Cost and Construction. Relatively low cost and easy construction using <br />concrete rubble on hand. <br /> <br />4. Appearance. The dam and chute are unsightly due to the concrete rubble <br />dumped into the river and the linear nature of the dam and chute. <br /> <br />5. Operation and Maintenance. The dam and chute tend to catch debris on <br />the jagged edges of the concrete rubble. <br /> <br />6. Stability. The rubble has been gradually rearranged by the river over <br />time. Some of the chute is not grouted, this will probably continue. <br /> <br />Other <br />Warning signs have been installed. No portage travel or landing for scout- <br />ing have been installed. Fish migration is difficult, but possible. Pool <br />- drop sequence is needed. <br /> <br />GATES DAM <br />Check dam at Gates Rubber Company near Santa Fe Avenue bridge. <br /> <br />Physical characteristics - approximate 3 foot drop. <br /> <br /> <br />The dam is constructed of sheet piling driven across the river and <br />small (1'-2') riprap placed on a 2:1 slope on the downstream face. <br /> <br />A boat chute is located near the right bank. The chute is constructed <br />with a concrete cap on the sheet piling, a slope (12:1) grouted rock <br />chute 15'-20' wide and very large (4'-5') rocks grouted in at the edges <br />and downstream of the chute. <br /> <br />'PR/' ti" L~ ~.".,,...,." '; r\ r'., "i~ <br />, "::a <' :4 '.' ;-.' ~ -.'.. '.._~ ".. ...:r '. <br />. - : .:<' ~ t",:., }') /.,v' <br />l... . . ~\J~ ~ i"~b11'l <br />