The effectiveness of a reservoir built upon the lines proposed in the case of Great Piece Meadow depends upon the adjustment of outflow so that the channel below will not be overborne, while at the same time sufficient storage capacity is afforded to hold temporarily the water which enters above the dam in amount greater than the carrying capacity of the outflow apertures. The dam across Passaic River above Little Falls would be provided with apertures which would discharge 12,000 cubic feet per second under the maximum head in the storage basin. As the flood rises these apertures would discharge a constantly increasing amount of water to the maximum, and for a considerable time thereafter the maximum would be maintained, the discharge decreasing after the flood according to the height of water remaining in the reservoir. [Footnote D: Includes water discharged through fixed openings for a flood similar to that of October, 1903. Maximum flow, 12,000 cubic feet per second.] _Estimated cost of Mountain View Reservoir._ [Elevation of flow line, 202 feet. Storage of 8 inches on watershed.] Earth excavation: Stripping dam base, 83,500 cubic yards, at $0.30 $25,050 Core wall trench, 24,900 cubic yards, at $1 24,900 Rock excavation, 10,100 cubic yards, at $2 20,200 Rock fill in dam, 197,000 cubic yards, at $1.25 246,250 Rubble masonry, 23,200 cubic yards, at $5 116,000 Concrete, 30,000 cubic yards, at $6 180,000 Gate chambers and tunnels 65,000 Reconstruction of highways 142,400 Reconstruction of railroads 815,000 Real estate 1,360,000 ---------- 2,994,800 Engineering and contingencies 325,200 ---------- 3,320,000 Protection of Newark pipe line 20,000 ---------- Total cost 3,340,000 [Same for elevation of flow line, 204 feet. Storage of 9 inches on watershed.]