Project details - CRBSCP - Protective and Regulatory Pumping Unit - Title I

Ground water is supplied from wells. On the Yuma Mesa, there in no surface drainage. The portion of the Colorado River water supply that is not used consumptively percolates into the ground-water reservoir.

Current Conditions

http://tgsv7.nws.noaa.gov/weather/current/KNYL.html

Historic Conditions

Annual Precipitation

Normal	3.17 in
Maximum (1989)	6.75 in
Minimum (1966)	1.01 in
(Yuma, Arizona 1961-1990)

Temperature

Mean Annual	74.4 ?F
Daily Maximum (7/28/95)	124 ?F
Daily Minimum (2/18/95)	5 ?F
(Yuma, Arizona 1948-1996)

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Project Water Quality

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Facilities in Operation

Sediment Retention Facilities

Storage Facilities

Carriage Facilities

Pumping Plants

Facilities in Operation

Wells	21
242 Lateral	12.4 mi
Access road	12 mi
Transmission line, 34.5 kV	11.7 mi
Transmission line, 69 kV (WAPA)	18 mi

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Sediment Retention Facilities

Two settling basins provide storage for the accumulation of sediment.

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Storage Facilities

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Carriage Facilities

242 Lateral

Location	Starts near well No. 22 and extends 12.4 miles west along the Southerly International Boundary to the afterbay of the existing Yuma Project`s Boundary Pumping Plant near San Luis, Arizona.
Construction period	1977-1978
Length	12.4 mi
Diversion capacity	7.5-220 cfs
Typical section - earth lined:
Bottom width	4-6 ft
Side slopes	1.5:1
Water depth	2.8-5.8 ft
Lining thickness	2.5 in

Well Field

Location	On South Yuma Mesa, north of the Southernly International Boundary.
Construction period	1977-1983
Number of wells	21
Depth	600 ft
Diameter of well at surface	10-26 in
Total annual production	125,000 acre-ft

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Pumping Plants

Designation	Number of units	Total capacity, cfs	Total dynamic head, feet	Total horsepower
Well pump units	21	7.5	128-145	125-250

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Last updated: Oct 02, 2009