. Water Supply and Irrigation Papers of the United States Geological Survey . ost of Lake Tahoe : 2,100 cubic yards of concrete, at $10 $21,000 Cofferdam for foundation 500 Excavation for foundation, 700 cubic yards, at $1 700 Outlet works, 20 gates complete . Deepening channel from lake to dam, distance 500 feet, excavation 5,000 cubic yards, at $ 3,000 Deepening channel below dam for 2,000 feet, bed width 100 feet, excava-tion cubic yards, at $ 2,000 Damages for lands flooded: Upper Truckee marsh. 1,240 acres, at $4 $4,960 Taylor Creek marsh, 110 acres-, a
. Water Supply and Irrigation Papers of the United States Geological Survey . ost of Lake Tahoe : 2,100 cubic yards of concrete, at $10 $21,000 Cofferdam for foundation 500 Excavation for foundation, 700 cubic yards, at $1 700 Outlet works, 20 gates complete . Deepening channel from lake to dam, distance 500 feet, excavation 5,000 cubic yards, at $ 3,000 Deepening channel below dam for 2,000 feet, bed width 100 feet, excava-tion cubic yards, at $ 2,000 Damages for lands flooded: Upper Truckee marsh. 1,240 acres, at $4 $4,960 Taylor Creek marsh, 110 acres-, at $5 550 Grounds at Tallac 1, 250 At Tahoe, 7+ acres, at $100 750 7,510 Engineering 5,000 Legal expenses 3,000 Contingencies, 10 per cent 4,521 Total 49,731 It will be seen that in this estimate provision is made for damagesto lands flooded. At the southern end of the lake, at the mouth ofUpper Truckee River, is a considerable area of low, marshy ground,much of which is under water at even ordinary stages of the lake, U. S. GEOLOGICAL SURVE\ WATER-SUPPLY PAPFH NO. 63 PL. V.
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