The Caldwell tribune. [volume] (Caldwell, Idaho Territory [Idaho]) 1883-1928, 1911-03-03
REPORT ON
DRAINAGE PROBLEM
Continued from Third Page

Continued from Third Page
the spring freshets the amount OF
water discharged from the drainage
system would be very small indeed,
when compared to the total flow OF
Indian Creek The advantage would
be that persons injured by the over
flow of Indian Creek could have no
possible grounds of complaint against
the district. The same advantage will
be had if a spirit OF good will toward
the district is felt by the people OF
Caldwell. There will be no doubt
that this spirit will exist if the people
of Caldwell realize the fact that the
future of their city depends, to
great extent, upon the successful re-
clamation Of the surrounding lands
now partially or wholly unproductlve
through over-irrigation, and upon the
prevention OF the spread of the injury
to other lands now good.
The proposed system is to consist
OF main canal running diagonaly
through the district and having two
branches; one running nearly paral-
lei to the boulevard and extending to
the city limits of Nampa; the other
running south to the Deer Flat reser-
voir. Besides these larger canals
there are a number of laterals and it
is further proposed that provision be
made for suitable drainage along the
boulevard and Oregon Short Line
track. The accompanying map
shows the proposed drainage district
and the proposed drainage system
AS has been said both are only tenta-
tive suggestions and it will be neces-
sary to perform considerable amount
of work in the field before definite
plans may be made.
Following is a description of the
system, with approximate estimates of
acreage affected; discharge of canals;
volume of material to be eXcavated
and cost of excavation
Calculations are based upon the fol
lowing assumptions;
Drainage capacity, mains, second
foot for each 800 acres; laterals, |
second foot for each 200 acres.
Depth of drainage canals feet;
side slopes | to | ; minimum bottom
width, feet; maximum depth Of
water foot, except in lower part of
main, where it will be IS inches.
Grade of canals, not less than 2
feet per thousand.
Maximum allowable velocity, 3
feet per second.
Cost of excavator, approximately
$780,
Average cost of excavation, cents
per yard
Summary of Costs
Drag line excavator =. ........S $500
ards of exca-
walton at cents =. -. 49,. 2863C
Highway bridge, fumes cul-
verts, etc :. .. .......... 5000
Engineering and superin-
tendence =. e. .... .... 4OOC
Total ,..#,... -. ...... $40 | sc
Cost per acre would be therefore
$685., or in round number, $500 pei
acre would be safe approximation.
1t will be observed that no allow.
ance has been made for cost of right
of way This will depend in large
measure, on local conditions and sen.
timent 1t should not bring the tota
cost of the work above $500 per acre
No allowance has been made for re-
err hand no salvage value was given
The operations will require at least
a year and the rate of depreciation Of
such machinery is high, SO that the
value Of the machine would probably
be accomplished Not only would
would about take care of repair ex-
pcnses
Such a system of drainage canals
would offer cutie; privileges to all the
lands lying within the district, besides
which the moHemen O. c>cess surface
and bridegroom atcrs world he ex-
Iedi'cd with the 'c5ult that there
you'd be gencra lowering OF the
varcr table ard incidents; i,y q consid-
trab'. amount Of farm drainage would
be -. aed \ rrl" would
the = csslve mot,'HIr b. r,'Ioved
q Huiskamp's