area, which would without doubt
give sufficient protection from all floods, there would still remain a
storage capacity of 23.75 inches for compensating purposes in addition
to the amount now available in Splitrock Pond. This project is one of
the most attractive in the Rockaway Basin, as the damages which would be
caused by flooding would be, comparatively speaking, nil. The property
is, however, now owned by the East Jersey Water Company, and is prized
highly as a reservoir site by that corporation.

UPPER PASSAIC BASIN.

_Millington reservoir._--There is an area of swamp land, comprising a
part of the drainage area of upper Passaic River above Millington, which
is known as Great Passaic Swamp. It is bounded on the south by a long,
narrow trap ridge known as Long Hill, the summit of which ranges from
400 to 500 feet in elevation, or roughly 200 feet above the border of
this swamp. To the northwest the land rises gradually toward Trowbridge
Mountains, while to the northeast is the terminal moraine. The outlet of
Passaic River at Millington is by a narrow gorge, which offers natural
facilities for the erection of a dam.

The whole situation is exceptionally good, and the surface of a
reservoir might be fixed at any elevation between 240 and 300 feet above
sea level. With the surface of the reservoir at 300 feet a dam 1,600
feet long and 90 feet high would be required. This lake would have an
area of 28.46 square miles. The drainage area above Millington has,
however, an area of only 53.6 square miles, and the proposed reservoir
would therefore cover more than half of this. Therefore the conservation
of so large a quantity of water would not be necessary nor advisable,
unless the beautifying of the surrounding country were an object to be
taken into consideration, which might be profitable.

A better project, however, would be to construct a dam at Millington 900
feet long and 50 feet high, the crest being about 260 feet above sea
level. There would be formed a lake with an area of 19.41 square miles,
and a capacity of 1,477,600,000 cubic feet, equal to 9.864 feet on the
drainage area. This project is too great for the necessities here
presented, and would not be wisely considered unless it were found
advantageous to improve the country generally as a place of suburban
residence. The land which would be flooded with the reservoir crest at
260 feet is of a wet, swampy character, and its value for agricultural
purpo