From the foregoing table, in which different reservoir projects are compared, it is seen that only the reservoirs designated as Great Piece and Mountain View will fulfill the requirements within a reasonable limit of cost. It is also shown that a combination of any other available sites would involve the expenditure of more money for their construction and the control of less tributary drainage area than is fulfilled by the demands of the Passaic drainage basin. We are therefore brought to the conclusion that only two of the projects above set forth will be effective. First, the construction of a regulating dam on the main stream above Little Falls, which we have called the "Great Piece" Meadow Reservoir, and second, the building of a dam at Mountain View across Pompton River. The relative cost of these reservoirs, constructed for flood control exclusively, is $2,625,000 for that on Great Piece Meadow and $3,340,000 for the Mountain View site. Details of these estimates are as follows: _Estimate of cost of Great Piece Reservoir, dam at Little Falls._ [Elevation of flow line, 178.5 feet. Storage and disposal of 9 inches collected.[D]] Earth excavation, 17,600 cubic yards, at 35 cents $6,160 Rock excavation, 8,800 cubic yards, at $2 17,600 Rubble masonry, 29,100 cubic yards, at $5 145,500 Ashlar masonry, 1,800 cubic yards, at $12 21,600 Facework of rubble masonry, 2,850 square yards, at $1.50 4,275 Concrete masonry, 250 cubic yards, at $6 1,500 Slope paving, 300 cubic yards, at $2 600 Crushed stone, 150 cubic yards, at $1.50 225 60-inch cast-iron pipe in place, 360 tons, at $35 12,600 Relocation of railroads, Erie, 5 miles, at $20,000; Delaware, Lackawanna and Western, 4.5 miles, at $40,000 280,000 Relocation of highways 170,000 Real estate: Above Mountain View 500,000 Additional for village of Singac 100,000 22,000 acres, at $50 1,100,000 ---------- 2,360,000 Add for engineering and contingencies 240,000 ---------- 2,600,000 Protection of pipe lines, Newark and Jersey City 25,000 ---------- 2,625,000