The Jersey City news. (Jersey City [N.J.]) 1889-1906, 1896-02-11

Gallons.
December -. ri. ...... a.soo.ooo.ooo
collected Ii SO million gal
lions Ions daily had been drawn s3,o0o.ooe
June 8 to December H. . 4,266. .0U0. 900
Total available supply ........ 1883 100000
10 have 5Q million gallons daily
during this period of 1S1 days
Ts wouid have REQUIRED s.o5o.0oo ooo
tbarefore ns DEFICIENCY Iea nana on ns a e
Or about 20 days supply But the dry
period has continued up to the preseil,ss
fbees ase aaa aaa we nd thai tora on
gallons against 3.30O, O,oo0,0 600 On December
i showing net gain in the. reservoirs
The total draft of the conduit during this
period was LAS million gallons, while
we estimate that there might have been
dam if the, draft had been increased to 50
million gallons daily, an additional AZ
an Wa d gallons fsa fa;a assge Aadng these gny qrn
DECEMBER 2 to January % to be .2.265
million gallons. TO have supplied 50
o days ga0ns shond a aSSsng Savs needed ss
million gallons. so that the deficiency dur
ing this period would have amounted to
December was 1451 million gallons, this
January q l.7ss million gallons of
therefore last June and an attempt made
to supply Jersey City with the amount Of
Teady wafT e5ea 81 aeen for ay ny The npp
by the first Of November that she would
the delivery Of any any further fas supply m to
Jersey City. and from that date up to
January q the yield of the river would
of the supply to Jersey City. It win be
seen.:s therefore, that if we take Mr.. Her
schel's own method of computation in
there would still be a shortage. but If we
follow the more rational course, and as
sumo that as matter of fact it Is highly
have allowed during. this extreme dry
period. any considerable waste which they
seua Sc Key aetuy ae16u5 We hs 5 bs w9S S
during this period covered by the East
Jersey Report from June i. 1891 to the
Six months. there would have been two
failures to supply so million gallons daily,
and that. too. IN the face Of the fact that
severe as may be expected 1t is true
that a certain amount of waste may have
been allowed in order to supply some
the water rights have not been acquired
If we could be assured that this waste
ue the net woad pe to N hat
tent improved, although the difference
would not be important; In order To
certain defects in plan in the present
works of the East Jersey Company which
are worthy of your consideration I shall
Table No. 5 is 81 made aelsii up on the as
sumption that the yield of the Pequan-
mock from 637 square miles of watershed
ured yield of the Passaic River at Dun
dee from S22 square miles of watershed,
the record of which is given on pages
(State Geological Survey. 1S94)
(Mr. Vermeule here describes an Ella
borate table OF flow and storage, from
cal intricacy, in the course of his re-
marks pointing out the inefficiency Of
Clinton reservoir on account of the
smallness of its drainage area He then
proceeds to interpret the figures con-
tained in the tables)
Thus we see that from February to
would have been at no time much over
half full, the waste from the rest of the
watershed amounted to more than double
filled it. Again.. from DECEMBER, 1881,
to june. 1882, although the gates at
Clinton were closed &c during the entire i,,
while the waste from the remainder
of the watershed amounted to nearly
twice its total capacity.
Oak Ridge reservoir, on the other
hand. being small in proportion to its
watershed, fills quickly and fails to
catch all the e, water when n It Is needed
reservoir would have been empty during
this period from July, 1880, to January,
ls ct ss 10 ad s peroa
of five months. while both would have
been empty. four months during the first
period and two months saan dnrlng nnl ,,de the
reservoir fills quickly: SO that It IS safest
to draw this reservoir down first, which
accounts for the the facT @ that \ y "a IS longeF ed
we have assumed THAT the. gates are al
lowed to stand open and the river flows
through IT. It Is seen - that i, after t oc{o-
then assuming that Newark and Jersey
City are both being supplied In the man
ner proposed. they would - only y;,u be aple na
since Newark and rhe other towns sup
piled by the East Jersey Company have
the right to Ss million gallons daily Jsr y,,aT
lion gaSlons in October, 1880. nothing in
November and December, and II million
ga0das in aaied in g ocfober ss ana
no water would have been available for
Jersey City during that month and the
next. ut will be noticed that we have
here two failures to collect the 50 mill
lion gallons daily in period OF fourteen
months.
the W Workings of the plant based on the
measured flow of the Passaic and the
frequency and duration of the periods OF
sn emp5y our rgReFs9 REPORT on water Supply that
small watersheds are liable to severer
ldrougihts than large ones, on the other
hand evaporation Is less on the Pequan-
neck than on the Passaic, taken as
whole. Our next table allows for both
these facts, and Is measure OF the
storage needed to deliver 90 million gal
ia Table len No. shows the flow of the Pc
auannock River above Macopin intake
computed by the use of table NO. 81, page
table computed by me for use in estimat-
ing the flow of the class of streams to
which the Pequannock belongs The the
ory on which this table Is based is made
up with great care from all the best and
longest stream gaugings in the Eastern
United States, and its accuracy IS belngs
further attested by actual experience IN
the operation of this East Jersey plant
on the Peauannock. This gives the con-
dition of the East Jersey reservoirs dur
ing the driest period which is likely to
occur on the Pequannock water shed.
The general arrangement of the table
is the same as that of Table No. 8, and It
drawing down Oak Ridge reservoir which
is empty early in July. and before the
middle of September Clinton reservoir
would also be empty after which we must
depend entirely on the river flow. Column
No. 2 shows what would be the average
tember to December, and If we remember
that % million gallons must be allowed
for Newark and the other communities
supplied by the East Jersey Com
pany, it will be seen that during Septem-
Der Jersey City would have had an aver
age of million gallons daily; during Oc-
tober, November and December no water
would be available, and what is still worse
instead of 20 million gallons only from
to II million gallons would be available 4