The Caldwell tribune. [volume] (Caldwell, Idaho Territory [Idaho]) 1883-1928, 1910-12-02
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GREAT PROJECT
,continued from First page.)

voir sites on the Boise River and ITS
tributaries that are designated and To-
Gated as follows: Hellgate on BOISE
River, Twin Springs and Rossi on
North Fork of Boise River, Alexander
on Middle Fork of Boise River, JOY
Casey, and Bascum on South Fork OF
Boise River, and Grimes on Crime
Creek, and borings are now IN prog
ress on some OF the dam sites.
The Boise River diversion dam, 10
Gated about 8 miles above BOISE o
the Boise River. is of the cyclopea'
masonry weir type, has a maNimu
height of As feet, and a length O.
crest. including the logway, OF q
feet. This structure serves the pur
pose of diversion raising water IN tn
Boise River to the elevation of the "
takes of the penitentiary and maj
south side canals. 1t was constructed
under contract by the Utah Fireproo'
ing Company work having been start
ed in March, 1906, and completed II
October, 1908. In the spring OF 1909
the apron of the dam was badly dam
aged by drive of logs passing Owe"
the spillway on account of the givir"
way of the log boom The work of r"
pairing the apron, together with tn"
placing of additional riprap below til
dam, was done in the fall of 1909.
Main South Side Canal.
The Main South Side Canal begin
at the Boise River dam and extend
III a southwesterly direction for dis
lance of about 400 miles, the first 20
miles of the canal runs over bench
lands south Of Boise to its intersection
with Indian Creek At this point the
waters of the canal are discharged in
to Indian Creek and flow for a dis
lance of about 9 miles, where they arr
of dam and head gates into second
stretch of the main canal 8 miles IN
length, terminating in Deer Flat res
ervoir. The function of the canal i
to supply lands lying directly under il
and to feed the Ridenbaugh Canal and
the Deer Flat reservoir. This canal
is ultimately to have a capacity o.
$500 second-feet, in addition to the
old New York Canal rights, requiring
a bottom width in earth sections Or
20 feet and height of bank above
canal grade of IL feet Under the or
iginal contracts, on account of insult
fcient funds for its immediate com
pletion, the canal was constructed
with bottom width of 40 feet
throughout its entire length, with here
and there short stretches excavated
to bottom width of 20 feet. The
earthwork of the first division was
constructed under contract by Vim
H. Thompson in 1906, 1907, and 1908
The earthwork of the second section
and practically all of the structure
on the canal were constructed under
contract by Page & Brinton in 1906,
1907, and 1908. The earthwork of the
third section was constructed under
contract by Conway & White in
1906, 1907, and 1908. On November
l., 1909. there were lined with concrete
approximately 24,600 linear feet of the
canal, and it is proposed to line an ad
ditional 1000 feet for the purpose OF
preventing excessive seepage and Ii
abilities of breaks and to obtain ca.
pacity. Eleven checks for the pur-
pose of controlling the canal velocity
and assisting in getting the water out
of the canal during low water were
also installed in the fall of 1902 Bids
were opened on July 8, 1910, and i
contract was awarded to w. ]. Hoy
Company for charging to a 70-fool
bottom width all of the portions re-
quiring charging from the dam to
Indian Creek, except small stretch
that it is proposed to enlarge during
the coming fall by force account. This
work is to be completed by April L
1912. The stretch of canal from In
dian Creek diverting works to the
Deer Flat reservoir has sufficient ca
pacity without further enlargement.
Distribution System From Main
South Side Canal.
The new lands served directly by
the Main Southh Side Canal total ap
proximately los, 400 acres, about 10000
acres of which lie under the Riden-
baugh Canal. This distribution sys-
tenn is in condition to supply water to
about 20 per cent of the lands under
it.
Deer Flat Reservoir.
The Deer Flat reservoir lies in i
natural depression situated southwest
of Nampa and has capacity, as now
constructed, of 10000 acre-feet of
water, 10000 of which are available