Diversion Dams

1      

Canals

167.3 mi  

Laterals

246 mi  

Pumping Plants

25      

Drains

14.2 mi  

Location

From Imperial Dam generally south about 13 miles to the vicinity of Arizona Western College.

Construction period

1936-1939  

Length

20.5 mi  

Diversion capacity

2,200 cfs  

Typical section in earth:

   Bottom width

22 ft  

   Side slopes

2:1  

   Water depth

13.5 ft  

Location

On the Main Canal about 5.7 miles south of Imperial Dam.

Construction period

1936-1938  

Length

0.33 mi  

Diversion capacity

2,058 cfs  

Cross Section:

Horseshoe

   Lining:

Concrete

   Diameter

20 ft  

   Water depth

17.4 ft  

   Lining thickness

10-16 in  

Location

On the Main Canal about 6.7 miles south of Imperial Dam.

Construction period

1937-1938  

Length

0.78 mi  

Diversion capacity

2,031 cfs  

Cross section:

Horseshoe

   Lining:

Concrete

   Diameter

20 ft  

   Water depth

17.4 ft  

   Lining thickness

10-16 in  

Location

On the Main Canal at Gila River, about 10 miles south of Imperial Dam.

Construction period

1939  

Description

Monolithic concrete pipe siphon.

Length

0.39 mi  

Capacity

2,200 cfs  

Diameter

19.5 ft  

Wall thickness

20-25 in  

Location

From the end of the Gila Gravity Main Canal near Yuma Mesa Pumping Plant southwest .

Construction period

1941-1942  

Length

13.6 mi  

Diversion capacity

640 cfs  

Typical section, concrete lined:

   Bottom width

8 ft  

   Side slopes

1.5:1  

   Water depth

10.1 ft  

   Lining thickness

3 in  

Location

From the "A" Canal about 2 miles downstream from Yuma Mesa Pumping Plant west to the vicinity of Yuma, Arizona.

Construction period

1941-1942  

Length

9.3 mi  

Diversion capacity

280 cfs  

Typical section, concrete lined:

   Bottom width

8 ft  

   Side slopes

1.5:1  

   Water depth

6.3 ft  

   Lining thickness

3 in  

Location

From the Gila Gravity Main Canal near the Gila River Siphon generally southeast along south side of Gila River to Pumping Plant No. 3 about 5 miles southwest of Wellton, Arizona.

Construction period

1949-1951  

Length

18.5 mi  

Diversion capacity

1,300 cfs  

Typical section, concrete lined:

   Bottom width

16 ft  

   Side slopes

1.25:1  

   Water depth

12.8 ft  

   Lining thickness

3.5 in  

   Length

6.5 mi  

Typical section, earth lined:

   Bottom width

44 ft  

   Side slopes

2:1  

   Water depth

8.8 ft  

   Lining thickness:

      On bottom

2 ft  

      On sides

6 ft  

   Length 

10.1 mi  

Location

On the Wellton-Mohawk Canal under the Southern Pacific Railroad, 0.3 mile upstream from Pumping Plant No. 2.

Construction period

1950  

Length

224 ft  

Diversion capacity

1,200 cfs  

Cross section:

Horseshoe

Lining:

Concrete

Diameter

15.25 ft  

Lining thickness

10-16 in  

Location

From a point on the Wellton-Mohawk Canal near Ligurta, Arizona, across the Gila River and generally northwest about 8 miles along the Gila River.

Construction period

1953-1954  

Length

13 mi  

Diversion capacity

220 cfs  

Typical section, concrete lined:

   Bottom width

7 ft  

   Side slopes

1.25:1  

   Water depth

6.5 ft  

   Lining thickness

2.5 in  

Location

From the end of the Wellton-Mohawk Canal about 10 miles northeast to a point near the Gila River.

Construction period

1951-1953  

Length

19.9 mi  

Diversion capacity

300 cfs  

Typical section, concrete lined:

   Bottom width

7 ft  

   Side slopes

1.25:1  

   Water depth

6.5 ft  

   Lining thickness

2.5 in  

Location

From the end of the Wellton-Mohawk Canal generally northeast along the south side of Gila River, then across the river and westward.

Construction period

1950-1953  

Length

46.8 mi  

Diversion capacity

900 cfs  

Typical section, concrete lined:

   Bottom width

12 ft  

   Side slopes

1.25:1  

   Water depth

11.3 ft 

   Lining thickness

3 in  

Location

From the Mohawk Canal north of the Mohawk Mountains, and generally east.

Construction period

1955-1956  

Length

9.8 mi  

Diversion capacity

125 cfs  

Typical section, concrete lined:

   Bottom width

5 ft  

   Side slopes

1.25:1  

   Water depth

5 ft  

   Lining thickness

2.5 in  

Location

From the Gila Gravity Main Canal, 0.4 mile upstream of the Yuma Mesa Pumping Plant.

Construction period

1963-1965  

Length

7.7 mi  

Diversion capacity

110 cfs  

Typical section, concrete lined:

   Bottom width

5 ft  

   Side slopes

1.5:1  

   Water depth

4.2 ft  

   Lining thickness

2 in  

Location

From Gila Gravity Main Canal, 0.3 mile downstream of Tunnel No. 2.

Construction period

1909-1912¹   

Length

10.9 mi  

Diversion capacity

250 cfs  

Typical section:

   Bottom width

42 ft  

   Side slopes

2:1  

   Water depth

3 ft  

Designation

Number of units

Total capacity, cfs

Total dynamic head, ft

Total horsepower

Wellton-Mohawk Division:

   Wellton-Mohawk No. 1

  9

1,300

35

  7,500

   Wellton-Mohawk No. 2

  8

1,200

90

17,250

   Wellton-Mohawk No. 3

  7

   900

60

  8,750

   Unit 1, Dome distribution
   system: 5 plants

10

   215

4-21.5

     515

   Texas Hill distribution system
:  3 plants

  7

   210

3.5-21

     535

   Ralph's Mill area,
   Mohawk Laterals: 5 plants

13

   240

12-45

  1,115

Yuma Mesa Division:

   Plant No. 1,
   Gravity Main Canal

  4

   968

50-54

  7,100

   Unit 1, 6 plants

  6

     98

2.3-4.3

       65

   South Gila Unit, 5 plants

10

     69

4.0-6.0

       90