The Yakima herald. [volume] (North Yakima, W.T. [Wash.]) 1889-1914, 1906-07-25

possible to haul CONS as far as the
dam site.
Another dam will be built at Lake
Gle Elum. in Kittitas county. This will,
for the present. consist of temporary
structure of cribwork some twelve or
fifteen feet high, which, however will
permit of adding some $4,000 acre feet
of water to the storage. 1t is expected
to build very high dam at Gle Elum
in the near future, when more of the
Yakima land is brought under culti-
walton, and the dam which it is now
proposed to build will be utilized as a
Golfer dam in the construction of the
larger dam, for the purpose of keep
| ing the water out of the foundation
! of the latter during construction. The
/ dam that will be finally built at Gle
Elum is expected to be about $50 feet
! high. to be built of earth. This will
be the highest earth dam in the world.
and the reservoirs that will be formed
will be about ten miles long and will
hold about 100000 acre feet of water,
that is enough to cover 100000 acres,
one foot deep.
/ Lake Keechelus, in Kittitas county,
J will also he damned in a similar man
ner with temporary dam pending
the construction of a permanent one.
The temporary dams at Lakes Gle
Elum and Keechelus will furnish stor-
age together for some $4,000 acre feet
winch will with the 10000 acre feet
at Dumping lake. be enough for the
present emergency.
plans and specifications for all
ders Will be invited TO submit bids in
a few weeks
ITO conduct the supply of the 1ieton
river to the newly irrigated district a
long ard costly canal will be built for
g distance of about ten miles along the
Tieton canyon. At the upper end of
the canal a low dam across the river
and masonry headgate structures will
be built The canal itself W II extend
from the headworks along the steep
hillside. which is frequently high ba-
saltic bluffs and very often loose rock
slides. but is always steep and diff
cult construction.
In work of this class it is the usual
practice of private irrigation concerns
to build fumes of wood resting on
wooden posts This method of con-
/ struction is quick. and when lumber is
at low price. is also cheap. Present
prices of lumber however, render the
attractive feature of cheapness less APP
! parent now tnan in the past, and in
view of the temporary nature of wood
work and the necessity of costly re-
newals and rebuilding, 1t has been de-
cided to use masonry construction.
/ tai az
first, yet in the long run will prove the
cheaper.
The natural difficulties in the way
of building a masonry canal are such
that 1t has been decided to use a very
interesting and novel method of con-
| struction. 1t Is proposed to manufac-
ture the canal in short sections. using
reinforced concrete, and then trans
port the sections to the line of the
canal and set them in place and join
them like sewer pipe. One of the chief
reasons why this method seems to be
| desirable is that good sand and gravel
and plenty of water can be obtained in
the bottom lands near the river. but
nothing can be found near the canal.
The idea of building large canal in
short lengths of solid masonry at
central point and thence transporting
the lengths for great distances to lay.
Is a novel plan in work of this magni-
tude. and should prove vrey interest
ing object lesson for engineers. If the
work proves successful it will certainly
inaugurate a new style of canal con-
struction, strong, durable and possibly
cheap.
Much of the canal will be in tun-
mel through the high basaltic cliffs.
No less than $4,000 feet of tunnel is
expected to be built on this line. one
single tunnel being 1000 feet long.
"The canal will deliver 800 cubic
feet OF water per second when COM
pleted. the velocity OF flow being from
nine TO twelve feet per second, very
high rate.
1.-THE total cost of the canal may
exceed 5000 900. The cost of the work
on the Teton project will be about
10000"