Engineering Wonders of the World
Volume III
Forfatter: Archibald Williams
År: 1945
Serie: Engineering Wonders of the World
Forlag: Thomas Nelson and Sons
Sted: London, Edinburgh, Dublin and New York
Sider: 407
UDK: 600 eng- gl
With 424 Illustrations, Maps, and Diagrams
Søgning i bogen
Den bedste måde at søge i bogen er ved at downloade PDF'en og søge i den.
Derved får du fremhævet ordene visuelt direkte på billedet af siden.
Digitaliseret bog
Bogens tekst er maskinlæst, så der kan være en del fejl og mangler.
THE WATER SUPPLY OF NEW YORK CITY. 103
CROSS RIVER DAM : CIRCULAR BASTION AND ABUTMENT AT THE NORTH END.
The present daily consumption of water by
Greater New York is about 530,000,000 gallons,
or more than twice the quantity with which
7,000,000 Londoners have to content them-
selves. Of the aggregate supply, 330,000,000
gallons are derived from the Croton water-
shed. This latter amount is 30,000,000 gallons
a day more than can prudently be looked
for in years of extreme drought, and only
50,000,000 gallons a day less than the maxi-
mum combined capacity of the “ Old ” and
“ New ” Aqueducts. As the increase of water
drawn through these conduits for several years
has averaged 15,000,000 gallons a day each
year, New Yorkers, ever prone to panic on
the subject of water scarcity, readily scented
danger from afar, and demanded, cost what
it might, a new source of supply.
This movement, started long before the
completion of the New Croton Dam, cul-
A further
Supply
called for.
minated a few years ago in the appointment
of a commission of inquiry, the enactment
of necessary laws, and the
creation of a new authority.
The Board of Water Supply
of the City of New York, as
the latter is called, has jurisdiction quite
distinct from the municipal department con-
trolling the Croton system. It decided to
seek amid the Catskill Mountains, already
world-famous for magnificent scenery, a suit-
able gathering-ground for the required waters ;
and eventually elaborated plans for a vast
system of water collection, storage, and dis-
tribution, which, when completed, cannot fail
to rank high among the most remarkable
achievements of modern engineering.
Preliminary investigations showed that the
main dam, the controlling feature of the
scheme, must be placed at one of two possible