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5, Alternate D, Two deft Bank Ladders with Fish Passage Through • <br />Power Canal and a New Open Channel. <br />An alternate very similar to that described above could be <br />located in the power canal. For this alternate, an open channel connect- <br />ing the power canal to the river would be used for fish migration instead <br />of the canal headgates. <br />6. Alternate E, Ladder Through Existing Sluice Gate. <br />A vertical slot/orifice ladder could be located through an <br />existing riverward sluice gate. The remaining sluice gate could be regu- <br />lated for proper fish attraction conditions. This alternate provides <br />louvers at the headgates and a trash shear boom from the upstream end of <br />the ladder to the left bank. <br />7. Alternate F, Ladder Through Spillway Crest Adjacent. to <br />Sluice Gates. <br />A vertical slot/orifice ladder could be located adjacent to <br />the sluice gates. This alternate provides a combination louver and trash <br />boom from the upstream end' of the ladder to the left bank. <br />8. Alternate G, Ladder Through Spillway Crest Near Right <br />Abutment. <br />A vertical slot/orifice ladder could be located through the <br />spillway crest near the right abutment of the diversion dam. An addi- <br />tional sluice gate, located, between the ladder and the right abutment, <br />would provide attraction flow. This alternate provides louvers at the <br />headgates to prevent adult fish from entering the power canal. <br />9. Alternate H, Ladder Through Spillway Crest Near Center of <br />Dam. <br />A vertical slot/orifice ladder could be located near the <br />center of the spillway. An additional sluice gate adjacent to the ladder <br />would provide attraction flow. This alternate provides louvers at the <br />headgates and a trash boom upstream of the existing sluice gates. <br />10. Alternate I, Right and Left Bank .Ladders. <br />Vertical slot/orifice ladders could be located on both <br />banks. The right bank ladder would include attraction flow from a new <br />sluice gate. The left bank ladder would be located adjacent (riverward) <br />of the existing sluice gates. This alternate also provides a combination • <br />8 <br />