FLOOD06560 - Laserfiche WebLink

Home Browse Search

I I I I I I I I I I I I I I I I I I I Memorandum to Mr. Ioannides April 28, 1986 Page 3 Analysis: 1. Navigability. to see because river current. The upstream entrances of the slots are difficult there are no signal rocks or concentration of the No possibility of scouting from the boat, must get out on the bank and scout. Too much drop at once, very rough and turbulent water, angular rock protrudes through the slots. Very difficult to navigate without damage to boat, particularly in low flow. Beginning boaters could easily end up broad-side on the rocks. No "keeper" or "hole" at the bottom of the drop. 2. Rescue Compatibilit~ Relatively easy for rescue operations to the location of e slots along the bank of the river, in view. due full 3. Cost and East of Construction. The dam itself is low cost. boating facilities have been constructed. No 4. Appearance. The dam is unsightly due to its linear configuration across the river, and the rubble and concrete chunks stacked in the river. Especially ugly when trash and debris has been trapped against the rubble. 5. Operation and Maintenance. Debris is always trapped against the rock rubble, requiring periodic cleaning. The ungrouted rock is gradually washed downstream by the river action. 6, Stability. The concrete wall is stable, but the rock rubble is not. the water shifts it around during high flow requulng peri- odic maintenance. The rock is not large enough and not grouted to be adequately stable. Other Fish migration is difficult, but possible. No portage trails, landings or signage, A drop-pool sequence with deflector is needed.