Rogue River courier. (Grants Pass, Or.) 1886-1927, 1911-04-14
ON THE COST OF IRRIGATION BY
electrically DRIVEN PUMPS
FROM TRANSMISSION SERVICES

mate Is based on water being lifted
from a depth OF thirty feet to irri.
gate a tract OF one hundred acres OF
land, and the expenditure necessary
for doing so would amount to fifteen
dollars an acre for the installation OF
centrifugal pump direct-driven by
fifteen-horse-power- induction mo-
tor. The cost for power for this pc
riod Of one hundred days In the ter
ritory defined, Is at the rate OF thir-
ty-five dollars per horse-power-year
and the cost for maintenance Is prac-
tically nothing. In fairness, however,
due cognizance must be taken for the
interest on the money invested and
as the cost per acre for a pumping
plant to irrigate a ne-hundred-acre
tract is fifteen dollars, the interest
on this investment for one year at
six per cent is ninety cents. This
amount should be added to the two
dollars and fifty-four cents paid for
power, making the total cost per
acre for the irrigation necessary dur
In one year to be three dollars and
forty-four cents. II to this be add
ed the very liberal estimate OF six
cents per acre for incidentals, the
total cost will not be far from three
dollars and fifty cents per acre per
year.
Some specific instances will prove
convincing. At Reddlng there is a
pumping plant consisting of fifty
horsepower type c Westinghouse In
duction motor, belted to an eight
inch horizontal centrifugal Jackson
pump that delivers eighty miners
inches Of water per square inch, and
with a suction lift of fifteen feet
through $500 feet of eight-inch riv-
eted pipe. This plant supplies wa
ter for gardens, orchards and alfalfa
lands, and the water Is sold at the
rate OF ten cents per inch per twen-
.y-four-hours' service
About one mile south OF Reddlns
seven and one-half-horse-p
ype @ induction motor, belt drives
four-inch Jackson centrifugal pump
II the vertical tower type, which lifts
,75 gallons OF water a minute to a
height OF twenty-seven feet for the
irrigation OF twenty-five acres OF al
alfa, This plant was installed about
hree years ago and the owner is
uthority for the statement that dur
ng the first year of It's operation the
increased productivness Of the land,
ecause Of irrigation, enabled him to
lear enough therefrom to pay for
ne-half OF the first cost OF the plant
, addition to his yearly power bill,
mounting to SITS.
About one mile further down the
acramento River somewhat similar
liant is being installed. This plant
OF a ten-horse-power type C
rotor belted to No. 8 Gould cen
'ifugal pump, which will lift water
a height OF thlrty-two feet for
,e irrigation of fifteen acres OF al
'lfa and six acres OF garden land. {
Al Anderson the Bellevue lrriga-
on company is operating fifty
orse-power type c induction motor. [
hich Is direct connected to a ten !
ch Krough Patented California l
amp" having double eight-inch I
lction and n ten-inch discharge i
'ening. This equipment, which is +
curely anchored to bedrock, is plac- v
over the water on a platform that "
eight feet above the low-water r
ark The two suction pipes project g
'out three feet below the surface OF G
W water and are surrounded by g
oating wooden platforms, the pur. :
'se OF which Is to prevent the for II
alton OF whirlpools and the suck. y
Z OF air into the pump. The dis. h
arge pipe, which is eighteen inches Il
diameter and tltty-four feet long. p
made of No. l6 steel with tlanged K
ints bolted together and connected d
the pump by means OF taper a,
Int. This plant shows an eff Ii
srcy OF seyenty-two per cent and 5
scharges iS9.S cubic feet OF water
r minute into large wooden hex. s,
Gated at tho head OF the ditch lead nj
< to the reservoir This ditch Is OF
500 feet In length, and for a dis OF
nee OF 600 feet II Is built MP eight ia
at above the ground It's grade is In
g eighth OF an inch 10 the rod, and D.,
'asnree seven feet across the top an
mr. feet across the bottom. with
pth OF three and one-half feet. The n,
'eryolr which Is nearly circular IN nj
I'm with diameter OF zoo feet co
IS formed by scrapng up dirt and Il.
rowing II up into leyee. aud when pr
led holds approximately leo 600 rr
bic feet OF water The main canal vi
ding from the reservoir Is 1850 NO
It long, ten feet wide and four foe, m