WSP11425

• File Number: 8278
• Description: Title I
• Basin: Colorado Mainstem
• Date: 1/1/3000
• Author: USDOI/BOR
• Title: Maintaining the Colorado River and Controlling Flows
• Water Supply Pro - Doc Type: Publication

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ro..l~"""_
F/SAU}', riprap is poured on
the riverbanks and levee sides.

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...;..';:':-;,;#!"".~;: 6::" .. -." ~. ",.:=
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'_",;{'''~''~~'N';;''I:::!'l.....,.:_..-... 11'.

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ROCKS are reduced in si=e by being put through
crushers.

JETTIES, OR TRAISJ-VG Slruclures. also reduce riverbank erosinn. They are usually
coTlStrucled af a downstream angle to deflect the flow from cutrlng dlrecr/y info the
rn'erbanks. This training structure is deflecting the river chunnel on the right side
alai)' irom the bank/me and backwater on the /'!it side.

1. Gila Gr.-voly
Mame.."al

2. Gila GravIty
Deiitt'''9
BaSIn

3.C.hlorn,a
!>Iuiuway

..Imperi.l
O.m
Oesilt,ng
Basm,

S. Color..do
R've-r
Ch",ule-t

6. All
Ame-r;c..n
(..n,,1

II/PERIAL DA.lf destltmg blJ.Hm ul/(JlJ.} wott!r to sprt'ud out
und sivw aUll n. u'hich enables silt To smk ro the bollam of
tn~ Oasm TIlt' dt'sifted water then flows. our of tile ba.Hn.~

head.....orks of major canals
along the river. As .....ater flo.....s
into desllting basins, It spreads
oul and slows down, which
causes sediment carried in the
water to drop to the bottom of
desilting basins,

At the hC<1dworks of the
Colorado River Aqueduct be-
hind Parker Dam. sediment is
removed at a desllting basin
atler the water is lifted uphill
from Lake Havasu.

At Imperial Dam, sediment Is
removed at desllling basins lo-
cated at the head works of its
two canals. On the California
side of Imperial Dam at the
headworks of the All-American
Canal. water flows into desill-
ing basins, The flow spreads
oul and slo.....s down In the
desilting basins, causing th!"
sediment carried in the water
to drop to the bottom of the
basins. Big rotating scraper
arms move the sediment Inlo II
series of collection pipes and
into the California Sluiceway
below the dam.

Water entering the Gila.
Gravity Main Canal head",,'orks
also passes throuf:h a desilling
basin belare it enlers Ihe Gila
Gravity Main Canal. The Gila

dou;nstream to .\lex/co, or through rhe All-Amencan Canal
to southern C<JlIfonllU. or ro the U'elfton-.\fohau.'k \'ulfey via
the Gtla GroVIn .\lam Canal.