The Idaho Republican. [volume] (Blackfoot, Idaho) 1904-1932, 1915-12-03

depth at the axis of the dam of
9.35 feet and at the lip of eight feet.
At the elevation of the spill-way
the reservoir covers $4,000 acres and
has a capacity of about 100000 acre
feet. The drainage area of the water
sheds into the reservoir is about 666
square miles. The elevation of the
water in the reservoir at the present
time is about that of the river owing
to the strong draught made upon
1t this past season. 1t is interesting
to not that the Blackfoot dam which
is but 40 feet in height does prac-
tically as much work as the famous
Arrowrock dam, which is the highest
in the world The storage Of the
Blackfoot reservoir is but a few
thousand acre feet less than the Ar
rowrock storage.
| The water from the reservoir is
carried SO miles by the Blackfoot
river, to a point about two miles
east of Blackfoot, where the upper
canal diversion is located. A second
diversion Is made at point about
mile further down the river VIII re
the lower acnal headgates are To-.
Gated. Both of these diversions are
made by means of loose rock dams,
and are controlled by concrete head
gates and spill-ways.
The upper canal headgates are
made CT concrete with wooden shut
tiers and vulcan lifts. There are six
headgates to the canal each -four
feet by seven feet, and three gates to
the spill-way, each four feet by eight
feet. The canal gates will deliver
$50 cubic feet per second without
pressure. The lower canal gates are
made of concrete with st ell shutters,
which are fitted with Western head
gates, frames and lifts. There are
five gates, each five feet by five feet,
and three gates to the spill-way, each
four feet by four feet. The canal
gates will deliver 800 cubic feet per
second without pressure.
The lower canal and its laterals
irrigate about 10000 acres of Indian
land between the Blackfoot river and
canals under the lower canal system
are the lower canal proper and the
lateral c." the former is 1012 miles
in length, and the latter 141a miles
All of the structures except indi-
vidual turn-outs are of concrete.
The upper canal carries water
along the foot hills on to east side
of tie project, it sypons under Ross
Fork creek. The syphon- is 1873 feet
long and Is composed of two rec
tangular barrels, each measuring
four feet by seven feet six inches in
side dimensions. The acnal was de-
signed to carry 43O second feet to
irrigate 10000 acres of land
All structures on the portion of
the project known as the upper canal
have been constructed of concrete ex-
cept individual turn-outs. These
'turn-outs are constructed by the in
'dividual land owners and are with
few exceptions made of wood. A re-
inforced concrete syphon, $500 feet
long and six and a half feet in d.
ameter, was constructed from the
main canal. passing under the Ore
gon Short Line track. and delivering
200 second feet of water to a high
area lying south of the reservation
which could not otherwise be water
ed.
The entire project consists of Sc
miles of main canal, 40 miles of
laterials, and 3.5 milec of drain
bitches. There are Sc concrete
structures costing over $4,000. there
are 2 concrete structures costing be-
tween $500 and $1,000, there the rs
concrete structures costing from
800 to $500 and 70 wood struc.
lures costing less than 800.
The project buildings consist of
one office, five residences, one barn,
one warehouse, one grainary and two
wagon sheds. There is a 6S13 mile
metallic circuit telephone line in con-
nection with the project.
The organization consists of Mr..
Richard ]. Ward, supervisor of
bitches; Mr.. Milton M. Thorne, clerk
and disbursing agent; ditch riders,
Messrs. Jess Martin, Alex. Vaughn,
A. s. Mcdaniel. ]. H. Hunter, Marion
Clark, and Rom Kennedy; gate
tenders, Messrs. J. B. Curtis, Ed.