New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1883-08-09

Tota, .................. si4,4609lO
The system or plan herein presented Il the result OF
chief OF the Croon aqueduct aided by the reg
ular consulting engineer OF the department h .; Oes
brough who built the first aqueduet for the CITY OF boston
and the Chicago tunnel: ny Benjamin ). Church. Tor
twenty-sx years resident engineer III charge OF tne
Croton aqueduc, and now also consulting engineer
julius ". Adams, the accomplished engineer OF iOry
years experience water works ana other lsrEe
with the Croton bureau In this work tue
engineers have had the use and benent OF tue
aud supply from the time the Crot0n Was hIst ueteI
mined upon the source OF supply When the plan
recommended sufficiently elaborated u was SUD
mitted for examination 10 John H. JerVs tne
the eminent hydraulic engineer; and Robert K Martin.
the builder Of the Baltimore aqueiuct tunne anu wafer
himself and approved OF the plans proposed BY the
department AS the best system Ior securing
| an additional aud adequate supply from the gro,
s. Green for several years chief engineer OF tae
adueduct aud the large reservoir IN Cen
Park and the Boyd's Corner reservoir separatey
inc report made thereon by Chief Engineer Newton Oh
February 81, 1888 to the Committee on Addltiohai
Water supply the features OF which are Incorporated III
The Surveys examinations and elaboration OF the sys-
tenn parts nave progressed as far as neces
sary or nearly they snould DO carried, until IL
is decided 90 proceed with tue work Inc pLeoedi1g
present 1t does not include land aud lsnd damages
Tor the aqueduct north OF the Harlem River. ABOUT
twenty acres VIII have to be acquired In fee Tor eDAhk
and excavations and eighty acres Tor shaiS anu
portals The for tunnel will require az area
| RESERVOIR AT soDoM NO BENEFIT.
In reference to securing the city an additional
water supply at the earliest possible moment even De-
fore the completion OF the works herein proposed
beg to call your TO the fact that the consrnc
ton Of a reservoir sodom would not be Of any material
benefit This reservoir could be finished but very
short before the new squedue AS suggested could
be made available and dam Al Quaker Bridge would
by that time have attained such height as to impound
sufficient water furnish Immediately large addition
TO the present supply through the new aqueduct In
case the dam should progressed TO such height
"a ia reasonably bc expected, the water retained by
| 1t could be pumped into the new aqueduct' or the
surplus water which at times flows over the Croton Ram
could be conveyed TO he new aqueduoi by conduit
Other methods may he devised By which an additional
.uppy can be secured Immediately UPON the completion
OF the new aqueduct It being question TO determine
whether the additional cost which might thereby DO IN
Cured would be JUSTIFIED b. thc aivantase. Obtained
BY the second section OF your resclti la/ an re-
quested TO furnish plan for the mmee cons-rue'
ton OF the sodom Reservoir and dam on eelst branch
OF the CrOon This reservoir Is known on tue water
shed map as Reservoir l. In respect TO the dam. It
would be almost facsimile OF the existing rcsorVoir
on middle branch Of the Croton. AZ Drewvle. aud
with but ntde change It could DO constructed on the
same specidcatiOns II woud be formed ny building
embamkment OF earth the valley OF the river with
wall OF hydraulic stone masonry through tho centre
from bedrock to within feet OF the top OF the dam.
ABOUT 5000 100000 gallons OF available water. The
ted cost Of this reservoir including land damages
ard the necessary Of the SewYork and Harlem
| Railroad rack, Is S9l 1000.
beg refer you 10 the preceding remarks In regard
this reservoir. and TO say that II should not In any
respect be considered as part OF the present plan Tor
an additional water supply. IL would Involve an o1-
penGIs beSen Rerror on tie east braneS
recommended by tao department years before the
building Quaker Bridge reservoir was thought OF.
and AS sorce ppy the present aqucduct but.
stated the building OF the erVor at tue lower
The water from the Croon River aud its Tributaries for
the use OF the city as required oy your te,ouuon VII
building this or any other reservoir In the upper
basin.
ROUTES FOR THE AQUEDUCT.
rhe third section OF your resolution calls for pan
surveys and maps that Will provide for two OF
aqueduct IL the northory portion thereof one 10 ter
inmate near site OF the Quaker Bridge dam, and the
other at point Croton Lake above and meas Pc ter
minus OF the CrotOn aqueluc- The 1rs VI these routes
has already been For tue second route trial
line has been rum beginning al point the first route
near is crossing the POcantcO River. and terminal
ing at the Croton Lake. 5000 feet above the Croton
dam This line would require seventeen shafts and two
portals from which the tunnel could DO driven from
open headings Surveys are now IN progress with the
we Of securing easier aud better line The location
and the estimate the cost OF this route are therefore
subec TO changes and notifications which further
aminations will probably make necessary The length
of the line from junction with tue first route % the
Croton Lake is 4G075 feet. and the aqueduct would
probably cost not less than $40 per running foot,
81 400 for the whole hne The line the point
OF nts to Quaker Bridge 3767s feet long and
the estimated cost IL $2,26o6oo
Mr. Dowd wanted TO know whether a wooden
hume could not be built from the Croton River TO
some point in this city, connecting with the present
water supply which would increase the volume of
water delivered from 10,o00.OOO TO 20 100000
gallons daily according to the size OF the proposed
fume. lie sad he had talked with engineers on
the subject and they deemed it entirely feasible.
There was fume of this description used IN Cali
forna for mining purposes thirtyseven miles long.
| OF course the iume suggested was only intended
| for temporary use. until the proposed new aque-
| duct and reservoir were finished He thought the
amount Of the cost would be than saved TO the
| insurance companies in one year by the lessened
tre losses. The cost would not be great II he re-
membered ar glt about 80 cents per running loot
| Mayor Ison said that ne doubted whether IL
| could be built 10 cheaply. He believed the lumber
| would cost more than The sum named. Mr.. Spencer
| SAID be knew that the plan was feasible because
| he had had Just such fiume constructed In Col
| orado. But the expense was greater than Mr.
Dowd had given. HIS hume cost 81 per running
| foot and no superintendent the work.
| MI Dowd-Perhaps that accounts for It, Laugh
ter m .
Dowd's figures as correct. the entire cost of the
| hume would be about $4,000. 1t would be I'M
| doubleday very much grea.er than this. He had
| heard OF the scheme before and engineers had
| roughly estimated the cost at from 100000 to
! 81. 100000.
| Engineer Church was asked by Mr.. Dowd his
| opinion of the tume scheme. He replied that un-
| dOubtedly il could be done. 1t would DO built on
stIls, OF course. Pumping works would be neces-
| sary to raise the water 10 the level of the fume
| The possibility OF iDjuriug the present aaueduct
| would have 10 be taken into consideration before
| deciding to run the hume over the line of tho
| aqueduct. III a new line were taken, the question
| OF procuring the right OF way and land damages
would come mp, The cost OF constructing the fume
water that couid he delivered every twenty -four
| hours. and all the otner necessary data could
| readily he prOcured.