Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1913-10-23

superintendent Of photography to the
board Of agriculture and forestry.l
Z Data received from all islands ex.
eept Hawaii by the photography diyi-
sion of the board of agriculture and
forestry show practically all streams
to have the lowest discharge record.
ed since the inauguration of the n.y.
geographic work. On Oahu the city
water supply has reached low point
that will necessitate further restric-
tons in the use OF water unless con-
siderable rainfall occurs within the
next fen days. ALI streams on Oahu
are at minimum discharges except In
the case OF the WaiahoIe stream, the
discharge of which has been steadily
increased by the underground water
induced by the Waiahole tunnel. The
north and south branches of the Kau-
konahua which supply Schofield Bar
racks and the Wahiawa Water Com
pany's reservoir respectively have
dropped below all known or estimated
records. A measurement of the south
fork on September Path showed a dis
charge Of but "a of q million gallons
per day while on October the north
fork discharge totaled 90 million gal
ions per day
On Maui the bitches OF both East
and West Maui are below all known
records, while on Kauai the same
condition occurs in a lesser percent
:ge of bitches. insufficient rainfall
data has been received to make a
comparison of the rainfall and run-off
at this time.
Methods Of Investigation.
There are two methods or plans of
under which the hydro
graphic investigation OF this territory
may be carried forward with the
funds available. One method consists
In covering large amount of terri
tory with meager or limited amount
of work and equipment. The second
method Is to concentrate equipment
and operations at those localities in
which the work seems most immedi-
ately needed and, as soon as the ne
cessary equipment has been estab-
iisned and the inyesti gation put In as
nearly self operating basis as pos
sible, then to take up the work at 9TH
er localities in the order of its i'm
portance in relation to the utilization.
operation and development Of water
usage.
Previous to August, 1912, the frst
named method was adopted hy the
engineers in charge Of this work An
effort was made. to Obtain az least a
little information of geaera aa-
ture to all perennial streams, dircnes,
pumping plants. rainfall, ETC., on the
islands Of Kauai. Oahu, Maui and Ha-
wall. Considering the limited funds
available. q remarkable amount Of
data of a general nature was collect.
ed and has been published in Water
Supply Paper No. 31S Of the u S.
Geological Survey. While the data
published furnishes q considerable
amount Of general Inflammation rela.
tive to the water supply of the. terri
tory, 1t does not go far enough to be
of high engineering and economic
value to those interested in the actu-
al utilization of the sources OF supply
Of irrigation, power and other by.
draulic projects. :.
The economic utilization of Ha-
wars nalural water supply Is one OF
the most important factors in the. az
riculture Of the territory. and one
which calls for intense methods of in.
vestigation instead of the superficial
or general methods adopted in the
past. The investigations of every pc.
rennisl stream. spring or other source
of water supply should include the
following:
l. At least is years continuous
gauge height records. These records
should be obtained by automatic regis.
tiers which give continuous record
and which cannot make mistake or
faisify records as Is frequently the
case In man-read and recorded gauge
heights.
g. Sufficient measurements by weir