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Colorado River Front Work and Levee System
Colorado River Front Work and Levee System Project | Project History | Project Data | Contact Information

Project Data
Land Areas (1992)
Area Irrigated and Crop Value

  

Project # 423

Land Areas (1992)

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Area Irrigated and Crop Value

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Project Water Supply
Project Water Quality

  

Project Water Supply

Current Conditions

Climatic Conditions

Mohave Valley Division

Annual Precipitation:
Normal4.67 in
Maximum - 19659.58 in
Minimum - 19621.21 in
Needles, California 1961-1990

Temperature:
Mean Annual73.2 ?F
Daily Maximum - 07/02/1969122 ?F
Daily Minimum - 12/31/198013 ?F
Needles, California 1948-1996

Real Time Weather Data -

Topock Gorge Division

Annual Precipitation:
Normal4.67 in
Maximum - 19659.58 in
Minimum - 19621.21 in
Needles, California 1961-1990

Temperature:
Mean Annual73.2 ?F
Daily Maximum - 07/02/1969122 ?F
Daily Minimum - 12/31/198013 ?F
Needles, California 1948-1996

Real Time Weather Data -

Havasu Division

Annual Precipitation:
Normal5.5 in
Maximum - 197813.67 in
Minimum - 19751.95 in
Parker Reservoir Station 1961-1990

Temperature:
Mean Annual74 ?F
Daily Maximum - 07/02/1969124 ?F
Daily Minimum - 12/31/198025 ?F
Parker Reservoir Station 1943-1996

Real Time Weather Data -

Parker Division

Annual Precipitation:
Normal4.5 in
Maximum - 197812.60 in
Minimum - 19750.90 in
Parker, Arizona 1961-1990

Temperature:
Mean Annual71.4 ?F
Daily Maximum - 07/07/1905127 ?F
Daily Minimum - 12/31/191117 ?F
Parker, Arizona 1893-1996

Real Time Weather Data -

Palo Verde Division

Annual Precipitation:
Normal3.6 in
Maximum - 19786.95 in
Minimum - 19641.13 in
Blythe, California 1961-1990

Temperature:
Mean Annual71.8 ?F
Daily Maximum - 06/27/1973122 ?F
Daily Minimum - 01/08/197120 ?F
Blythe, California 1931-1996

Real Time Weather Data -

Cibola Division

Annual Precipitation:
Normal3.6 in
Maximum - 19786.95 in
Minimum - 19641.13 in
Blythe, California 1961-1990

Temperature:
Mean Annual71.8 ?F
Daily Maximum - 06/27/1973122 ?F
Daily Minimum - 01/08/197120 ?F
Blythe, California 1931-1996

Real Time Weather Data -

Cibola Division

Annual Precipitation:
Normal3.6 in
Maximum - 19786.95 in
Minimum - 19641.13 in
Blythe, California 1961-1990

Temperature:
Mean Annual71.8 ?F
Daily Maximum - 06/27/1973122 ?F
Daily Minimum - 01/08/197120 ?F
Blythe, California 1931-1996

Real Time Weather Data -

Imperial Division

Annual Precipitation:
Normal2.74 in
Maximum - 19835.72 in
Minimum - 19751.17 in
Yuma Proving Ground, Arizona 1961-1990

Temperature:
Mean Annual73.2 ?F
Daily Maximum - 06/27/1973121 ?F
Daily Minimum - 01/08/197121 ?F
Yuma Proving Ground, Arizona 1948-1996

Real Time Weather Data -

Laguna Division

Annual Precipitation:
Normal2.74 in
Maximum - 19835.72 in
Minimum - 19751.17 in
Yuma Proving Ground, Arizona 1961-1990

Temperature:
Mean Annual73.2 ?F
Daily Maximum - 06/27/1973121 ?F
Daily Minimum - 01/08/197121 ?F
Yuma Proving Ground, Arizona 1948-1996

Real Time Weather Data -

Yuma Division

Annual Precipitation:
Normal3.17 in
Maximum - 19896.75 in
Minimum - 19661.01 in
Yuma, Arizona 1961-1990

Temperature:
Mean Annual74.4 ?F
Daily Maximum - 07/28/1995124 ?F
Daily Minimum - 02/18/19955 ?F
Yuma, Arizona 1948-1996

Real Time Weather Data -

Limitrophe Division

Annual Precipitation:
Normal3.17 in
Maximum - 19893.17 in
Minimum - 19661.01 in
Yuma, Arizona 1961-1990

Temperature:
Mean Annual74.4 ?F
Daily Maximum - 07/28/1995124 ?F
Daily Minimum - 02/18/19955 ?F
Yuma, Arizona 1948-1996

Real Time Weather Data -

Water Supply



Historic Conditions

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Project Water Quality

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Facilities in Operation
Storage Facilities
Regulatory Facilities
Diversion Facilities
Carriage Facilities
Power Facilities
Pumping Plants

  

Facilities in Operation
Facilities in Operation
Storage Dams1
Canals107 mi
Laterals151 mi
Drainage well fields3
Pumping Plants40
Transmission Lines18 mi
Switchyard1

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Storage Facilities

Hoover Dam

Davis Dam

Parker Dam

Senator Wash Dam

Squaw Lake Dike

North Dike

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Regulatory Facilities

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Diversion Facilities

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Carriage Facilities

Mohave Valley Division

Channel Stabilization
LocationColorado River from Davis Dam, Arizona-Nevada, to Topock, Arizona, about 32 miles
Construction period:1949-1953
Channel dredging and rectification31 mi
Typical channel section
Average width of cut450 ft
Average depth of cut20 ft
Average depth of water18 ft with a maximum flow of 15,000 cfs
Maximum depth of water25 ft
Stabilizing eroding riverbanks12 mi
Volume of rock riprap288,082 cu yd
Training and jetty fill structuresestimated at 16 mi
Volume of dredge spoil52,531,728 cu yd

Levees
Length47 mi
Average height13 ft
Design flood
Davis Dam to Piute Wash50,000 cfs
Piute Wash to Lake Havasu70,000 cfs
Volume - estimate29,000,000 cu yd
Access and service roads106 mi
Average channel slope
Upstream of Needles Bridge0.00024
Needles Bridge to Topock0.00016

Topock Marsh Intake Structure
LocationArizona side of Colorado River near bridge at Needles, to upper end of Topock Marsh.
Construction period:1965-1966
DescriptionThree 42-inches asbestos-bonded, corrugated-metal pipes with concrete headwalls and concrete inlet and outlet transitions, Diversion is from Colorado River
Length of each pipe204 ft
Diameter of each pipe42 in
Diversion capacity100 cfs
GatesThree 42-inches in diameter control gates and three 48- by 42-inches rectangular gates for adjustment of flow measuring orifices.

Topock Marsh Inlet Canal
LocationExtends eastward from intake structure below bridge at Needles to upper end of Topock Marsh
Construction period:1965-1966
Length4 mi
Bottom width14 ft
Depth of water4 ft
Capacity100 cfs
Side slopesTwo:1
Gradient9e-005
Annual diversion capacity41,839 acre-feet
Surface area of marsh4,000 acres

Topock Marsh Outlet Canal
LocationIn Topock Dike near lower end of Topock Marsh.
Construction period:1965-1966
DescriptionA reinforced concrete structure with four 5-ft stop-log bays for water control and 3-ft fish ladder and battery of flapgates to minimize reverse flows due to river floods

Topock Settling Basin
Type:Earthfill
LocationOn the Colorado River, 6-miles south of Needles, California. It consists of a 4-mile long reach extending upstream from Topock Bridge
Construction period:1955-1956
Length4 mi
Typical maximum section
Structural height14.0 ft
Top width24.0 ft
Crest elevation460.0 ft
Slope: Natural angle of responseten:1
Volume1,016,377 cu yd
Roadway on top of dike:
Length4 mi
Width20.0 ft
Surfacing0.5 ft
Outlet structureLocated in dike near lower end of marsh. It is a reinforced concrete structure with four 5-feet-long lob bays and a 3-feet fish ladder.

Big Bend Training Dikes
Type:Earthfill structures
LocationAbout 10 miles downstream from Davis Dam.
Construction period:1959-1960
Length1 mi
Typical maximum section
Average structural height9.0 ft
Top width12.0-20.0 ft
Crest length-four structures5,820.0 ft
Crest elevation504.0 ft
Slopetwo:1
Volume of rock21,000 cu yd
Volume of gravel26,000 cu yd

Water Control Structure - Park Moabi
LocationAbout 8 miles south of Needles, California.
Construction period:1965
DescriptionThree 42-inches asbestos bonded asphalt dipped corrugated metal pipe with 42-inches in diameter slide gates and 16-feet frames and timber piling.
Length of each pipe120 ft
Diameter of each pipe42 in
Diversion capacity100 cfs
GatesThree 42 inch diameter control gates.


Topock Gorge Division

Channel Stabilization
LocationOn Colorado River from Topock, Arizona, to Lake Havasu, about 12 miles.
Construction period:1967-1968
Channel dredging and rectification1.7 mi
Typical channel section
Average width of cut450 ft
Average depth of cut20 ft


Havasu Division

Snag Removal
LocationLake Havasu and the river between Parker and Headgate Rock Dams.
Construction period:1965, 1967, and 1969-1971
Method of removing and disposingThe snags were removed by mechanical and physical methods, including explosives. The snags were disposed of by sinking waterlogged wood parts. All other parts were removed from the lake to disposal areas to dry and burn.
Total number of snags removed7,510
Maximum cut of elevation below the normal operating level of the lake435 ft
Normal operation level of the lake during removal445-450 ft


Parker Division

Palo Verde Diversion Dam and Levees - See Palo Verde Diversion Project
LocationHeadgate Rock Dam to Palo Verde Diversion Dam, 33 miles

Channel Stabilization - Section I
LocationWithin the Colorado River Indian Reservation and about 16 miles downstream from Headgate Rock Dam to Alligator Bend.
Construction period:1966-1968
Stabilizing eroding riverbanks11 mi
Volume of rock riprap235,000 cu yd
Bridge across river1
Service road construction34 mi
Width of river channel500 ft

Channel Stabilization - Section II - Proposed
LocationFrom Alligator Bend to Palo Verde Diversion Dam
Construction period:Proposed
Channel dredging and rectification21.4 mi
Volume of land excavation5,800,000 cu yd
Volume of dredged spoil11,600,000 cu yd
Volume of rock riprap516,000 cu yd
Service road construction53 mi
Bridges across canals - new2
Bridges across canals - reinforced2
Width of river channel500 ft
Side slopes1.5 1

Fish and Wildlife and Recreation - Section I

Fish and Wildlife and Recreation - Section IIFish and Wildlife and Recreation - Section II
Type:Deepening of backwater areas by dredging and installation of inlet and outlet structures for fresh water flows.
Construction period:Proposed
Deepening backwater by dredging4,660,000 cu yd
Inlet and outlet structures to backwaters20
Parking and sanitary facilities5
Road construction24 mi


Palo Verde Division

Channel Stabilization and Training Structures
Type:Stabilized banklines and training structures, constructed with land-based equipment.
LocationPalo Verde Dam to Taylor Ferry, 28 miles.
Construction period:1962-1968
Stabilizing eroding riverbanks19.5 mi
Volume of rock riprap466,000 cu yd
Service road construction23.6 mi

Backwater Improvement
Type:Deepening of backwater areas to enhance fish and wildlife habitat by dredging and constructing inlet and outlet structures to provide fresh water circulation to backwater areas.
LocationIncludes areas A-7, A-10, C-5, and C-10.
Deepening backwater by dredging2,012,861 cu yd
Inlet and outlet structures for flows12
Capacity of each inlet and outlet30 cfs

Development of McIntyre Park
Type:Training structure and backwater dredging.
Location7 miles south of Blythe, California, on 26th Ave. and Colorado River.
Construction period:1972


Cibola Division

Channel Stabilization and Levee
Type:Channel excavation and levee construction by dredging
LocationFrom 2.2 miles below Taylor`s Ferry and Adobe Ruin, 24 miles.
Construction period1964-1970
Channel dredging and rectification16 mi
Typical channel section:
Average width of cut450.0 ft
Average depth of cut20.0 ft
Average depth of water7.6 feet at a minimum flow of 10,000 cfs
Average depth of water11.5 feet at a maximum flow of 20,000 cfs
Volume dredge excavation and levee construction10,343,00 cu yd
Volume of rehandled dredge and levee material981,700 cu yd
Riprap254,400 cu yd

Levees
Length32.2 mi
Typical section:
Average height15 ft
Design flood80,000 cfs
Width between levees-varies750-1,000 ft
Volume6,309,230 yd3
Levee roads32.2 mi
Total access and service roads51.8 mi
Average channel gradient0.00042

Dredging Cibola Lake
LocationLower end of Cibola Valley on the Arizona side near Adobe Ruin.
Construction period1970
Volume of dredged material2,238,300 cu yd

Backwater Improvement - Palo Verde Drain
LocationAbandoned river channel from outfall of the Palo Verde Drain to Adobe Ruin.
Construction period1970
DescriptionExtension of Palo Verde Drain to carry drainage water, originating in Palo Verde Irrigation District, to a new outfall into the relocated river channel near Adobe Ruin.
Length of abandoned channel12 mi
Width of abandoned channel150 ft
Elevation of outfall near Adobe Ruin210 feet with riverflow of 10, 000 cfs
Average flow of drain500 cfs
Minimum flow282 cfs
Maximum flow577 cfs

Dredging Near Walter`s Camp
LocationImperial County, California.
Construction period1974


Imperial Division

Silt Removal Above Imperial Dam
LocationDiversion pool immediately upstream from Imperial Dam near the headworks of the Gila Gravity Canal.
Construction periodIntermittent dredging since 1969

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Power Facilities

Senator Wash Pumping Plant


Switchyards


Laguna Division

Laguna Settling Basin
LocationOn the 4.7 miles reach of Colorado River between Imperial Dam and Laguna Dam
Construction period1963-1965
Method of construction:Dredging
Length0.57 mi
Maximum depth, when cleaned24 ft
Average width450 ft
Sluicing flows5,000-7,500 cfs
Normal flowsLess than 1,000 cfs
Other flows3,000 cfs once or twice a year
Volume of material removed annually3,120,000 yd3
Average water salvaged per year4,300 acre-ft

Inlet Channel - Laguna Settling Basin
Length10,000 ft
Bottom width90 ft
Design depth at 5,000 cfs8 ft
Volume of riprap4,200 cu yd
Volume of dredged material removed1,100,000 cu yd
Volume of other material removed90,000 cu yd

Outlet Channel - Laguna Settling Basin
Length8,700 ft
Bottom width120 ft
Design depth at 5,000 cfs10 ft
Volume of dredged material removed1,500,000 cu yd
Volume of other material removed130,000 cu yd

Mittry Lake Dredging
LocationMittry Lake was formed by Laguna Dam. On east side of original reservoir, it extends from dam upstream to within one mile of Imperial Dam
Construction period1970-1973
Method of construction:Dredging
Land and water area3,575 acres
Reduction of Mittry Lake area from 1,200 to about 725 acres.
Deepening 200 acres offshore in the 725- acre lake to minimum depth10 ft
Clearing of phreatophytes940 acres
Volume of dregded material removed2,019,000 cu yd
Lake elevation153.5 ft

Gila Sluiceway
LocationThe original river channel from the Gila Gravity Main Canal to the California Sluiceway.
Construction periodOriginal dredging in 1970; Supplemental dredging in 1973
Method of construction:Dredging
Length of dredged channel0.5 mi
Width150 ft
Depth12 ft
Volume of material removed125,105 cu yd


Yuma Division

Levees
LocationFrom Laguna Dam to the Southerly International Boundary.
Construction period1951-1952
DescriptionWidening and raising existing Yuma Levee, widening and raising portion of existing Reservation Levee, constructing new stretch of the Reservation Levee around Yuma Island, and new levee and floodway along the Gila River.

Yuma Levee Improvement
Type:Earth embankment and rock riprap.
LocationExtends along left bank of Colorado River from Yuma, Arizona, to Southerly International Boundary.
Construction period1951-1952
Length23.7 mi
Dimensions:
Top width20 ft
Side slopes:
River sideTwo:1
Land sideThree:1
Volume of embankment836,000 cu yd
Thickness of riprap blanket5 ft
Volume of riprap247,000 cu yd
Area protected - Yuma Valley50,400 acres
Design flood140,000 cfs

Reservation Levee - Improvement and New Levee
Type:Earth embankment and rock riprap.
LocationExtends from Laguna Dam along California side of Colorado River to high ground about 4 miles west at Winterhaven, California.
Construction period1951-1952
Length17.4 mi
Dimensions:
Top width30 ft
Side slopes:
River sideTwo:1
Land sideThree:1
Volume of embankment898,950 cu yd
Thickness of riprap blanket5 ft
Volume of riprap297,000 cu yd
Area protected - California21,400 acres
Design flood140,000 cfs

Imperial Levee (1)
Type:Earth embankment
LocationImmediate vicinity of Hanlon Heading on the Alamo Canal.
Construction period1951-1952
Length0.23 mi
Dimensions:
Top width20 ft
Side slopes:
River sideTwo:1
Land sideThree:1
Volume of new embankment19,000 cu yd
Thickness of riprap blanket5 ft
Design flood140,000 cfs

(1) - This levee prevents floods in the Colorado River from bypassing Hanlon Heading in the United States and flowing into the Salton Sea via the Alamo channel.

Gila Levees and Floodway
Type:Earth embankment
LocationTwo parallel levees down the lower Gila Valley, about 0.5 mile apart with a floodway channel some 200 feet wide between the two levees. The channel and levees begin below McPhaul Bridge and the channel extends to the developed mouth of the Gila River. O
Length22 mi
Dimensions:
Top width20 ft
Volume of new embankment1,420,000 cu yd
Length of excavation6.75 mi
Volume of excavation2,000,000 cu yd
Area protected26,000 acres
Design flood140,000 cfs

Main Outlet Drain
Type:Concrete lined
LocationParallels Gila River and south Gila Valley Levee from the Gila River Siphon to 0.5 mile upstream from confluence of Gila River and Colorado River.
Construction period1960-1962
Length7.9 mi
Capacity353 cfs
Typical section, concrete lined:
Bottom width8.0 ft
Side slope1.5:1
Water depth4.3 - 6.0 ft
Lining thickness2.5 in

Main Outlet Drain Extension - Delivery of Water to Mexico
LocationExtends from end of Main Outlet Drain to below Morelos Dam
Construction period1963-1965
Length12 mi
Capacity353 cfs
Typical section, concrete lined:
Bottom width12.0 ft
Side slope1.5:1
Water depth5.8 ft
Lining thickness3 in

Channel Stabilization
LocationFrom Laguna Dam to Rockwood Heading
Construction period1969
Channel dredging and rectification17.4 mi
Laguna to the mouth of the Gila River
Bottom width120.0 ft
Side slope1.5:1
Gradient0.000230
Mouth of the Gila River to Rockwood Heading
Bottom width150.0 ft
Side slope1.5:1
Gradient
Mouth of the Gila River to California Wasteway0.000230
California Wasteway to Rockwood Heading0.000095
Design flow of channel5,000 cfs
Grade control structures2
Average flow
Laguna Dam to the mouth of the Gila River250 - 300 cfs
Mouth of the Gila River to California Wasteway400 - 450 cfs
Below California Wasteway700 - 1,500 cfs
Average depth at flow of 300 cfs2.3 ft
Average depth at flow 700 cfs3.0 ft
Volume of dredge spoil4,213,000 cu yd
Volume of rock riprap264,000 cu yd
Road construction41.0 mi
Clearing2,200 acres

Yuma Valley Drainage Well Field
LocationEast side of Yuma Valley near toe of Yuma Mesa
Construction period1965
Number of wells6
Average depth180 ft
Diameter of well surface24 in
Total annual production:
Maximum design31,500,000 acre-ft
Average yearly10,000,000 acre-ft

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Pumping Plants
Yuma Valley Drainage Well Field
DesignationNumber of unitsTotal capacity, cfsTotal dynamic head, ftTotal horsepower
YVI-714.46140
YVI-1311259125
YVI-23185775
YVI-251867100
YVI-2712.86730
YVI-2818.364100

Yuma Valley Drainage Well Collector Channel
Type:Concrete
LocationAn open collector channel that collects the discharge from Yuma Valley Wells Nos. YVI-25, -27, -28, and Yuma County Water Users' Well Nos. 17-1/2 Street and 18-1/4 Street and conveys the drainage water north to the Southeast Drain. This drain discharges
Construction period1965
Length1.2 mi
Capacity
Maximum26 cfs
Minimum8 cfs
Typical section, concrete lined:
Bottom width2 ft
Side slopeone:1
Depth3 ft
Lining thickness3 in
Slope of bottom:
Maximum0.0008
Minimum0.0001

South Gila Valley Drainage Well Field
Type:Gravel-packed, cased and screened
LocationAbout 4 miles southeast of Yuma, Arizona, between the north toe of Yuma Mesa and the Gila River; extends from below Gila River Siphon to below confluence of the Gila and Colorado Rivers.
Construction period1961-1964
Number of wells24
Average depth of wells, varies160-300 ft
Normal diameter of wells at surface30 in
Casing:Protective casing nominal diameter 3 to 15 feet below concrete slab and 1.33 foot above ground surface. A 20 inches inside diameter, 50 feet linear section reduced to 127 feet of 16 inches linear pipe and screen.
Total annual production55,000 acre-ft
Average salinity of drainage water2,200 part per million

Pumping Plants - South Gila Valley Drainage Well Field
DesignationNumber of unitsTotal capacity, cfsPumping Level, ft Actual/InitialTotal horsepower
SG117.834 / 2240
SG21938 / 3260
SG31935 / 2030
SG411132 / 2660
SG511030 / 1260
SG611128 /3260
SG71930 / 3975
SG81937 / 3560
SG91928 /2060
SG1011152 / 4260
SG1111145 / 40100
SG1219.555 / 4260
SG71617.834 / 3660
SG7171832 / 3660
SG7181927 / 3060
SG7191924 / 2960
SG72011023 / 3160
SG7211933 / 3760
SG71316.750 / 3760
SG71417.440 / 4160
SG70918.549 / 5250
SG71111024 / 40100

Drain Pump Outlet Channel No. 1
LocationIn South Gila River Valley about 4 miles southeast of Yuma, Arizona.
Construction period1961
Length3.44 mi
Open Channel3.40 mi
Pipeline0.04 mi
System capacity for eight wellsSG1, 2,3,4,9,11,12, and well 716
Maximum40 cfs
Minimum8 cfs
Typical section - open channel
Bottom width2 ft
Side slope1.5:1
Water depth:
Maximum3.5 ft
Minimum1.5 ft
Lining concrete2 in
Typical section - pipeline
Type:PCP pipe
Length0.04 mi
Size30 in

Drain Pump Outlet Channel No. 2
LocationIn South Gila River Valley about 5.5 miles east of Yuma, Arizona
Construction period1961-1965
Length2.72 mi
Open Channel2.62 mi
Pipeline0.10 mi
System capacity for six wellsSG5,6,7,8,10, and well 717
Average50 cfs
Typical section - open channel
Bottom width2 ft
Side slope1.5:1
Water depth:
Maximum3.4 ft
Minimum1.6 ft
Lining concrete2 in
Typical section - pipeline
Type:PCP pipe
Length0.10 mi
Length0.10 mi
Maximum diameter36 in
Minimum diameter24 in

Drain Pump Outlet Channel No. 3
LocationIn South Gila River Valley about 7 miles east of Yuma, Arizona
Construction period1964
Length5.8 mi
Open Channel1.8 mi
Pipeline4.0 mi
System capacity for six wellsNos. SG713, 714, 719, 720, and 721
Average60 cfs
Typical section - open channel
Maximum7.0 ft
Minimum3.0 ft
Side slope1.5:1
Water depth:
Maximum3.4 ft
Minimum2.6 ft
Lining concrete2 in
Typical section - pipeline
Type:Cast-in-place concrete pipe
Length4.0 mi
Maximum diameter42 in
Minimum diameter24 in

Drain Pump Outlet Channel No. 4
LocationIn South Gila River Valley about 2 miles east of Yuma, Arizona
Construction period1965
Length3.4 mi
Open Channel0.6 mi
Pipeline2.8 mi
System capacity for four wellsNos. 708, 709, 710, and 711
Average40 cfs
Typical section - open channel
Bottom width6 ft
Side slope1.5:1
Water depth, varies1.0 - 2.0 ft
Lining concrete2 in
Typical section - pipeline
Type:Precast concrete
Length2.8 mi
Maximum diameter42 in
Minimum diameter24 in

Yuma Mesa Well Field
LocationAlong the western edge of Yuma Mesa about 2 miles south of Yuma, Arizona.
Construction period1968-1971
Number of wells12
Depth of wells, varies189 - 286 ft
Diameter of wells at the surface24 in
Maximum total capacity of the wells100 cfs
Total annual production60,000,000 acre-ft
Salinity of the pumped water1,330 parts per million

Yuma Mesa Well Field
DesignationNumber of unitsTotal capacity, cfs Actual/InitialTotal Dynamic Head, ftTotal Horsepower
YM-211.5 / 8.5131.4100
YM-3A17.0 / 9.8112.7125
YM-412.0 / 8.1138.8200
YM-5A15.5 / 7.3114.3200
YM-615.5 / 7.9140.1125
YM-715.0 / 8.8127.3150
YM-816.5 / 6.7126.875
YM-915.5 / 8.2136.8200
YM-1019.0 / 9.4148.1250
YM-1119.0 / 9.1153.7150
YM-1219.0 / 8.9155.5150
YM-1318.5 / 7.3154.3200

Conduit System
TypeReinforced concrete pressure pipe
LocationExtends from the center of the south line of Section 23, T.10S., R.24W., G&SRM, to a point on the Colorado River about 2.5 miles northwest of Yuma, Arizona.
Construction period1967-1968
Total length of pipeline
Length of mainline14.7 mi
Length of collector lines5.1 mi
Diameter of main conduit24 - 66 in
Diameter of collector conduit18 - 24 in
Capacity of main conduit
Maximum125.0 cfs
Minimum7.6 cfs
Velocity2.6 - 5.5 cfs

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Last updated: Apr 18, 2011