5 inches run-off from the
drainage area. Here the measure of safety is wide, and if there were
drawn from the lake an amount of water equal to 12 inches on the
drainage area there would still be 5.5 inches which could be used for
compensating purposes.
The construction of either one of the above-described reservoirs would
involve interstate complications, as the 300-foot contour in Ramapo
Valley includes a considerable part of the State of New York. This
obstacle was deemed insurmountable by the northern New Jersey flood
commission, and that commission directed studies to a reservoir which at
the time of maximum flood would not back water into New York State to a
greater height than it already rises during such floods. The following
description is taken from the report of the engineering committee of the
flood commission:
An admirable dam site is offered on Ramapo River about 2 miles
above Oakland village. The drainage area tributary to this point is
about 140 square miles in extent, the country for the most part
being quick-spilling and upland.
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