The Pacific commercial advertiser. [volume] (Honolulu, Hawaiian Islands) 1885-1921, 1895-01-02
LETTER FROM E. KOPKE.
HONoLULU,. December, 1894.
Mr. b. +. DILLINGHAM;
General Mdnage,. a. II. 4: l.. &C.,
Honolulu


the different points of interest the lands and have
before me survey given to me by Mr.. c. H. Kluege,
portant matters
ea In my calculation Of pumping expenses have taken
allow liberal margins everywhere. In determining the
amount OF water required have taken for my
and have counted on $50 days irrieatine Der YEAR
whereas 200 days is than average irrigation
w be carried on especially as these lands have the
benefit of showers of rain which do not reach the lower
lands.
WATER SUPPLY.
(a) Springs There is stream at the lower part of
these lands which obtains its water from springs which
was measured by Messrs. Alardt and Schuyler both
engineers of high standing and found to flow over AZ
cubic feet of water second this amount of water
will rrigate $500 acres of cane land This amount of
water undoubtedly be increased, some OF the
springs supplying the stream discharge their water
several feet the bottom of the creek and by lower
ing their place of discharge the amount of water will
be increased. How much this increase will be only
be found by trial and cannot enter into this calculation
() Artesian wells. All artesan wells which have
been bored in this district have shown wonderful
supply of water There II ten-inch wells on Eva
plantation all in space of $50 feet by 100 feet which
deliver constantly through the drest part of the year
fifteen m0n gallons per a1 onebS o ahs
from this station there is another one with SIX wells
which delivers seven and halt million gallons WIN
the same results all these wells to the west of the
proposed "Oahu Sugar Company" To the east there
the wells in Pearl City and the peninsula which give
an abundance of water. | am not able to give the
capacity of either of these wells but none of them have
been exhausted by pumping:
posed plantation will not do just we'll as the ones
mentioned above One or two wells dug at the very
RToG e1pe all DOUBT if there in
regard to the water supply by artesan wells.
RESERVOIRS.
water in reservoirs The water might be led out OF the
gulches by bitches fumes and stored in reservoirs
situated above the fields AS this problem 1of
civil engineer to solve, shall not enter into 1T any
further.
The amount of water and the height it has to be
lifted being considerable it becomes absolutely neces
sary that only very large steam pumps OF the most
approved designs and construction be used in order
to Obtain very high degree of economy. With the
different types of pumps on these islands useo Tor 1ne
81 are oBanged Having the data of the
important of these machines. very valuable points
may be obtained for purchasing and erecting new
plant OF this nature.
COST OF IRRIGATION PER ACRE
Tn starting the plantation the lower lands say under
400 feet elevation will be planted first, and more
land will have to be taken in the ADJACENT LANDS above
will come under cultivation up to 65O feet ABOVE sea
level This elevation takes in an area OF over 1OOOo
acres shown in map before mentlonedin 4 ,os g.,
It is evident that the lower lands Will cost less 1of
irrigation than the upper and therefore irrigation
expenses for the first will be less than
when the higher lands have been taken up fannot
at this moment determine how land under different
elevations will under cultivation and shall there
feet elevation and base on this the calculation of
nenses The average height is obtained by multiplying
the different By their the hegh af t6eag
nrodncts by the total number of which gives an
height above sea eYe Of e 44 e eet @ e from
As # is proposed to plant 1000 per year. have
figured on pumping plant of this capacity and get the
following: ~ -,
sSf Rs sS5S per year 4o
Two
oilers and 1000
1000
1000 LOW
~ s51 90
In the above figures you will see that have allowed
q liberal amount for wages those OF super1ntendents
erected, as one superintendent can look after TWO
stations easily. ~ :, 49,. g. oooO
The actual horsepower to lift the water Tor anJ