Saturday press. [volume] (Honolulu, H.I.) 1880-1885, 1884-05-17
HONOLTLU U.trER SUPPLI.
Sseuu,f puugg

supply of llonoIulu viii cndeayor TO se,
forth sni explain the methods which IN my
opinion would serve 60 utilize the dtlicicni
existent sources ofwatcr supply, in The most
economical AMI effective manner, commerce.
ing with the Nuuanu Valley supply asI
follows
\ small pipe bead r,.cmyir Of IRON OF mn
.onr, or about 6ooo gallons capacity placed at
or near the pik Auwai, fitted with series
.ormuyrabIg screen. vt brass wire uf different
size of mesh. these screens art To arrest limu
and amy dolung particles, the top Of The tank
to Dc sufficiently above inlet Of pipe line. To
give the necessary velocity head to the water
flowing therein.
The channel of the stream above this point
IS mainly OF rocky character, and the water
flowing, being jct',rd from ,pdng-, is ,ompar.
atvcly lrcc from impurities, except during
heavy rains, when It would duubilcs, b. iur.
bid hu, the high velocity of the flowing water
in the pipe line, would prevent any sitting up
or deposit therein from that cause From th,
tank o., much Of the water of the pahi A.nyni,
as would be desirable, say ! cubic feet per
second, could be conveyed in the pipe already
provided and on the ground to the upper or
6ltorog reservoir which, with some .addi.
tional capacity could now be used as a settle.
ing reservoir. The whole OF The above quantity
OF water would therefore be delivered free
from contamination to this point. This pipe
should be fitted with automatic air valves, on all
submits, likewise securing valves at the low
est points Of the line.
From the upper or Gltering reservoir to the
high-lcvel.scryice reservoir, IS inch pipe is
distributed for laying. Considerations Of
economy would demand the utilization fall the
existing means OF storing and conveying the
water supply when such course would not
involve a waste of the same. would there
fore recommend that this reservoir be repaired
and modified, and an additional one built.
which would allow OF cleaning and repairs
without interfering with the supply. From
here to Nuuanu Valley IS inch pipe is
provided.
\ certain amount of distribution between
the last named points has used certain quantity
Of the initial supply Of ) cubic feet per second
but the auxiliary supply received would more
than compensate for the loss. will there
fore assume that the constant supply to this
point is J cubic feet per second only, but as
the demand is intermittent it becomes neces-
sary to provide a storage for about half the
above amount in order that it may not run TO
a..
eryoir has a capacity ofaboui 2S7,Sjo u. ). gal
Ions, it would therefore require another ola
capacityof 6SI57 gallons TO prevent waste, as
suming t, hours intcrmission in the demand and
that said demand equals the supply. 1t is OBJ
viously necessary that the distributing mains
should be able 10 carry off the whole supply du-
| ing the period Of the demand or say IL hours.
which would be equal to conveying cubic feet
per second. am satisfied that no part of the
present system needs reorganization more than
the distribution.
| Uncertain cities Of Europe when thenecesstyo Of
economizng the water supply forced itself upon
the different communities, careful examina-
tion would reveal losses due to eaky Joints aud
broken pipes ranging from 20 to so per cent.
Of the whole supply in some cases. 1t is clear,
therefore, that any scheme of improvement
here must include the service system, OF the
res, would be of little value by itself.
If the above were the only supply it would
give population ef 10000 daily quantity PER
head Of 81 gallons.
| In non.manulaciunng towns in Eurdpe the
daily allowance per head is about is gallons
In manufacturing towns it is about IS gallons
per head.
In the United States, as rule, they are
more literally supplied, ranging from 80 To
65 gallons per head; New York Cityw its
enormous resources supplying about 100 gal
Ions per head each day. So that with only
part of the available supply from the Nuuanu
Valley source property utilized, we should be
better on than nearly every city in the world
in the matter Of town supply per head, with
our population Of say 10000.
Pauoa Valley, with a pipe head reservoir and
small pipe line is, in my opinion, good for a
supply OF 10000 gallons in - hours, con-
veycd TO the Nuuanu reservoir. Makiki Valley
with the same arrangements could, feel con-
hdent, spare 100000 gallons per day il re-
quired. Manoa Valley would permit the
amount of 900, 600 gallons per day with a
proper regard to riparian rights, which with a
pipe head reservoir and small pipe line could
be led to Makii reservoir for distribution.
! My own observation in the above men
toned valleys has led me to believe that a
considerable proportion OF the different
streams are lost in transit, the system Of
measurement herein recommended would re-
veal the fact, and il it should prove that this
is not the case plan of storage for irrigation
in the Manoa Valley, that would not threaten
the safety Of the inhabitants, could be adopted.
said plan would render available for tosn sup
lply considerable proportion Of the minimum
flow in the valley.
The previously enumerated sources Of sup
lply If available as claimed herein, would aggre-
gate 4,73S,SI6 gallons per "a hours, OF a daily
supply per head of population Of 10000 peo-
pie of about IISJi U. S. gallons rather an
important fact this, III, be true. II would seen,
to be reasonable as well as highly desirable,
that our actual resources should be a,certaiaed
beyond doubt, before appropriations are
made to initiate any costly OF Indefinite
scheme of water supply, involving great ont
lay in the execution and possessing inherent
disadvantage in some respects. | would sug-
ges' tie following simple and quite customary
method Of ascer,aining beyond doubt what
our actual resources arr, outside Of the Paki
Auwai and arcsian wells. In each Of the
Panoa, Makiki and Manoa valleys, at OF near a
suitable place for head Of pipe line, put in a
weir plate and scale, also one at, OF near, where
the water begins To be used for irrigation pur.