The Jersey City news., 1899-10-24
II The Longwooa ,yalley VIII not baI re-


n the Iengwooa Valley VIII not bs re-
I I now propose dam at the location
pointed out to you on the Banta prop
demonstrated to the satisfaction Of my
engineers the practicability of securing q
good and substantial foundation, The
area Of tributary water shed above this
dam is 121.5 square miles.
The dam, as constructed for the deliv-
cry of fifty million gallons per day, Will
have height to full water level above
the present bed of the river Of one hun-
dred feet. The elevation of top of waste
weir being 302.42 feet above high water
by the official Jersey City base lWard =,
the bottom of the effiuent pipe Will be
placed at an elevation of 2o6-6e, same
base.
The area of the lake formed by this
dam will be $50 acres, and the storage
capacity above of effluent pipe will be
7190 million gallons To increase the ca
pacity to secure a delivery Of 70 million
raised to an elevation of S209S, which
will give a reservoir with a storage Ca
pacity Of 1860 million gallons. There
are no engineering or other difficulties IN
the way of accomplishing these results
My engineers estimate that the cost OF
increasing the reservoirs capacity at Inc
Banta site will exceed the same COST at
the kingland site, about $53, UuU, paSed on
prices of today.
This increased cost at the dam and res
eryoir site, however, is more than made
UP by saving In the cost OF the auoationai 81 70 IA
pipe line required for supply Of 70 mill
ion gallons per day by reason OF I'M
provements which detailed surveys snow
can be made in the pipe and CONDUIT llne'
by reason OF this loca ton OF the Dam.
These improvements are generally as Ioi-
lows:-As determined by the survey OF
my engineers as far as developed.
The original acqueduct, as proposed IN
my bid. was made up Of three miles of
conduit in tunnel with capacity OF ~
million gallons per day and 10 miles Of
steel pipe with capacity Of 81 million gal
ions per day and in order to increase
the capacity of the whole line to deliver
70 million gallons per day ~ miles OF
steel pipe, with a capacity OF ~ million
gallons per day. would be required oy
the specifications.
The original aqueduct, as proposed In
aqueduct, developed by reason or the dam
site as now located and more extensive
survey will make the aqueduct consist OF
about two miles of tunnel and three ana
one-half miles of masonry conduit, Dotn
on the hydraulic gradient and capabie of
delivering by the formula stipuiated IN
the specifications, with a water surface
one foot below the inside of the crown
of the covering arch of the tunnel and
conduit, 70 million gallons per day Ine ne
steel pipe portion of the aqueduct will pc
deduced from 10 miles to II miles, thus
making a saving, when the works are in
creased to a capacity of 40 million gallons
present prices laid $150,000, The tunnels
and conduits will at the outset, be con-
structed to carry 70 millions S required
by the specifications. Subtracting from
this sum the estimated added cost of
raising dam and reservoir S53sQO0, shows
a net saving of nearly 100000 by the re-
yised plan.
This saving based on present prices of
steel pipe. will in all probability be re-
duced somewhat IN the future. but even
at the lowest prices of steel ever known
the saving will be very substantial In
addition to the momentary saving,
would call your attention TO the immense
practical advantage OF the works, as
permanent engineering construction, OF
conduit and tunnel running without
pressure and reducing the proportion. of
steel pipe. and also to the very gratifying
fact. that new reservoir will have an
average depth of water above effluent pipe
when full of 26 feet against the average
depth of 3.S feet in the reservoir of the
Kingsland site.
My engineers will be pleased to submit
for your inspection and verification. the
data as to the elevation, areas and guam
titles on which the statements herein
made are based.
The elevations herein mentioned are
based upon the differences between the
base of the State Goodetic survey and the
official Jersey City base as determined by
adjacent bench marks in Jersey City.
Careful levels now being run from tide
water to Boonton may change the figures
to the extent of two or three inches, but
not the absolute heights.
On receipt of your approval of the site
herein proposed will have detailed
plan at once prepared for submission to
you, on the dam and appurtenanees, and
will at once proceed with work on the
site. 1 have already developed large
granite quarry for the necessary stone,
and have about secured direct railroad
communication from the quarry to the
site of the dam.
This railroad will be about three miles
in length; all of the lands save one tract,
have been secured therefor after much
litigation and more than half of the track
has been laid. Since the final decision of
the Supreme Court in the McEwan suit.
the work has been prosecuted with all
possible vjgor, although | am still ham
pered by the scarcity and increased cost
of materials.
(Signed) P. H. FLYNN.
Jersey City Water Supply Co.
M. J. KENNEDY,
Vice President.
The communication was referred to the
Committee of the Whole and some action