ROCKAWAY SYSTEM.
Rockaway River offers a greater number of available reservoir sites than
either of the other highland tributaries of the Passaic. Some of the
reservoirs which could be constructed could be used solely as catchment
areas to hold back flood waters, while the capacity of others would be
so much greater than any single flood run-off that they might serve also
as compensating reservoirs. A large dam is now in process of erection at
Old Boonton, conserving a considerable amount for the water for the
municipal supply of Jersey City. This reservoir can not be depended upon
as a flood-catchment area, as it will be the aim of those in authority
to maintain the water in it as high as possible.
_Powerville reservoir_.--A short distance above Boonton the erection of
a comparatively small dam would flood a large, irregular, flat basin
having an area of a little more than 4-1/2 square miles and extending up
the Rockaway Valley to Rockaway Village, up Beaver Brook to Beech Glen,
and north and south for considerable distances.
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