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<br />. <br /> <br />. <br /> <br />. <br /> <br />No portage trails, landings are installed. <br /> <br />This chute has been observed at high water levels and functions well. <br /> <br />ALAMEDA AVENUE DAM <br />Check dam downstream of Alameda Avenue <br /> <br />Physical characteristics: approximately 3'-4' drop. <br /> <br />The dam is constructed over sheet piling driven in across the river <br />with concrete riprap placed on the downstream face of the dam. <br /> <br />A boat chute is constructed near the left bank. It consists of two <br />drops and two pools constructed of large grouted rock. Two large <br />signal rocks are located at the chute entrance. <br /> <br />Analysis <br /> <br />1. Navigability. The chute is easy to locate from a boat upstream due to <br />large signal rocks at either side of the chute entrance. Due to the <br />total drop being divided into two smaller drops and pools, the chute is <br />not very turbulent and may be navigated by the typical intermediate <br />boaters. The large grouted rocks for smooth diagonal waves and stand- <br />ing waves as opposed to "crushing" waves and "keeper" holes. <br /> <br />2. Rescue Compatibility. Rescue is relatively easy due to the large pool <br />and eddies at the bottom of the drop and the easy bank access from the <br />bikepath. <br /> <br /> <br />3. Cost and Ease of Construction. Similar to the Gates Rubber Company <br />dam, Le. concrete cap on existing sheet piling, and placement of <br />grouted rock. <br /> <br />D~r?" t/ ... <br />ll:ntllk'ih~H.ll <br />