Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1913-10-23
SUPERINTENDENT OF PHOTOGRAPHY
MAKES REPORT TOIHE BOARD

lcr current meter to deyelope and
maintain rating tables OF discharge
which may be applied TO the recorded
gauge heights. and which will give the
mean or average discharge for every
day In the year. as well as the maxi
mum flood discharge and the mimi
mum discharge.
8. Sufficient rainfall stations in
the catchment areas OF the stream to
enable the relation OF the rainfall to
run-off to be worked out, II possible.
A.. A careful study OF the topographic
geologic features, the vegetation. for
estation, and erosive features Of the
eatchment area in reference to pos
sible cooperative work with forestry
or other conservation procedure.
5. An examination and inyestigar
ton of all diversions from the stream
and its present utilization.
s. An investigation covering the
possible utilization of any waste wa
Ter. flood or otherwise, which might be
economically utilized by diyersian or
storage
4 An investigation Of evaporation
losses and of the amount of water ui-
liked in plant Transportation and
growth. or OF. as it is commonly
known, the water duty for various
crops under various conditions Of soil.
locations. etc.
The first four operations are the
only ones which strictly apply to n.y.
geographic investigation work, but as
the photographic survey Is q neces.
sary preliminary step toward the last
three Investigations named, the two
phases Of the work should be kept in
view and should be considered In
conjunction.
The first step necessary for this
work is the installation Of the proper
gauge height recording equipment, as
Epn this part of the investigation de.
pend all further steps
Acts 56 and 81 OF the 1913 hgisla-
ture have made the intensive study
Of streams and other sources of water
supply In limited areas possible, and
1t is believed that this method has
been inaugurated in parts of the Isl
ands Of Kauai. Oahu. Maui. and by
December 81. 1913, II Of the largest
sources of supply on Kauai. six on
Oahu. and 16 of the largest streams
on Maui will be equipped with auto.
matte registers, and will be ready for
further steps of the Investigating
work. In selecting these streams
those which are. Of the greatest eco
nomicr value, or which may be uti-
liked to supply water where crops are
now suffering for lack Of It have
] been given preference. Should the
present supply of funds continue to
be available, It is estimated that with
in eight years all sources of supply
Will be under Investigation; installa,
| ton and construction work win be
completed. and funds Will be available
to take up the features Of inyestiga,
lions relative to utilization and duty
Pending the Installation Of clock reg
lister gauges, the practice Of obtaining
staff gauge readings by observers will
! be continued. on those streams that
are now under observation.
i lIydrographic Records and Data.
From past experience II has been
found best to work up records and
! data Of perennial streams In annual
units, and to publish these records
and data for periods covering calen.
dar years. Special Investigations oil
seepages, losses, "Reminiscences for
small domestic or power investiga
tions, ETC., may be made and com
pleted within shorter period Of time
but investigations of perennial streams
of sufficient Importance to be consid
+ -. H. 4.