Storage Dams

6      

Canals

333 mi  

Laterals

1,933 mi  

Pumping Plants

240      

Drains

3,163 mi  

Powerplants

1      

Transmission Lines

21 mi  

Substations

42      

Location

From end of Grand Coulee Pumping Plant discharge lines southwest to Banks Lake

Construction period

1946-1951  

Length

1.6 mi  

Capacity

16,000 cfs  

Canal section, concrete lined:

   Bottom width

50 ft  

   Side slopes

1.5:1  

   Water depth

25 ft  

   Lining thickness:

<=12 in  

   Length

6,130 ft  

Cut-and-cover conduit:

   Description:

Twin reinforced concrete barrels.

Dimensions (each conduit):

   Length

2,100 ft  

   Diameter

25 ft  

Terminal structures:

Check structure with three 24- by 25-ft radial gates, a 410-ft long concrete-lined chute, and a V-type weir.

Location

South from Dry Falls Dam to Long Lake, then west from Long Lake Dam to East Low and West Canals bifurcation works.

Construction period

1946-1951  

Length

21 mi  

Diversion capacity

13,200 cfs  

Typical section in rock:

   Bottom width

50 ft  

   Side slopes

1.5:1  

   Water depth

35.8 ft  

Typical section, concrete lined:

  Bottom width

50 ft  

   Side slopes

1.5:1  

   Water depth

20.73 ft  

   Lining thickness

4.5 in  

Location

On the Main Canal beginning about 2 miles south of Dry Falls Dam.

Construction period

1946-1950  

Length

10,045 ft  

Capacity

7,250 cfs  

Cross section:

Horseshoe

Diameter

23.25 ft  

Lining:

Concrete

Location

On the Main Canal about 2 miles south of Dry Falls Dam.

Construction period

1946-1950  

Description:

Reinforced concrete conduit

   Length

1,038 ft  

   Diameter

23.25 ft  

   Capacity

7,250 cfs  

Location

On the Main Canal beginning about 2 miles south of Dry Falls Dam.

Construction period

1976-1980  

Length

9,950 ft  

Capacity

12,050 cfs  

Cross Section:

Horseshoe

Diameter

28.5 ft  

Lining:

Concrete

Location

On the Main Canal about 2 miles south of Dry Falls Dam

Construction period

1976-1980  

Description:

Reinforced concrete conduit

   Length

1,041 ft  

   Diameter

28 ft  

   Capacity

12,050 cfs  

Location

From the bifurcation on Main Canal about 2.5 miles north of Adrian, Washington, southwest to the vicinity of Quincy, Washington, then south to the Frenchman Hills Tunnel and east to the vicinity of O'Sullivan Dam.

Construction period

1946-1955  

Length

88 mi  

Diversion capacity

5,100 cfs  

Typical section in earth:

   Bottom width

50 ft  

   Side slopes

1.5:1  

   Water depth

19.12 ft  

Typical section, concrete lined:

   Bottom width

38 ft  

   Side slopes

1.5:1  

   Water depth

16.4 ft  

   Lining thickness

4.5 in  

Location

On the West Canal around north end of Soap Lake, and about 8 miles northeast of Ephrata, Washington.

Construction period

1948-1951  

Description:

Monolithic concrete pipe with steel liner in high-head sections

Length

2.45 mi  

Diameter:

25-ft-diameter for the 0.88 mi of end sections where static head is less than 100 ft; 22.33-ft-diameter for remainder (static head greater than 100 ft).

Capacity

5,100 cfs  

Location

On the West Canal about 20 miles south of Quincy, Washington

Construction period

1951-1953  

Length

9,280 ft  

Capacity

1,540 cfs  

Cross section:

Horseshoe

Diameter

14 ft  

Lining:

Concrete

Location

From the turnout of West Canal and the outlet of Frenchman Hills Tunnel.

Construction period

1956-1957  

Length

8.5 mi  

Diversion capacity

900 cfs  

Typical section in earth:

   Bottom width

37 ft  

   Side slopes

1.5:1  

   Water depth

7.24 ft  

Location

From Main Canal about 2.5 miles north of Adrian, Washington, generally south-south-east to the Snake River Valley about 8 miles northeast of Pasco, Washington.

Construction period

1946-1954  

Length:

   Present

87 mi  

   Ultimate

130 mi  

Diversion Capacity

4,500 cfs  

Typical section in earth:

   Bottom width

68 ft  

   Side slopes

1.5:1  

   Water depth

15.5 ft  

Typical section, concrete lined:

   Bottom width

20 ft  

   Side slopes

1.5:1  

   Water depth

18.92 ft  

   Lining thickness

4.5 in  

Location

From O'Sullivan Dam generally south to the vicinity of Pasco, Washington.

Construction period

1949-1953  

Length

70 mi  

Diversion capacity

3,900 cfs  

Typical section in earth:

   Bottom width

48 ft  

   Side slopes

1.5:1  

   Water depth

15.9 ft  

Typical section in rock:

   Bottom width

34 ft  

   Side slopes

1.5:1  

   Water depth

35.36 ft  

Location

From the turnout on Potholes Canal about 8 miles northwest of Eltopia, Washington, then southeast to the vicinity of Eltopia.

Construction period

1953-1954  

Length

25 mi  

Diversion capacity

555 cfs  

Typical section in earth:

   Bottom width

20 ft  

   Side slopes

1.5:1  

   Water depth

6.6 ft  

Location

Southwest from the turnout on Potholes Canal about 6 miles south of Othello, Washington.

Construction period

1957-1967  

Length

41 mi  

Diversion capacity

2,000 cfs  

Typical section in earth:

   Bottom width

36 ft  

   Side slopes

1.5:1  

   Water depth

9 ft  

Typical section, concrete lined:

Bottom width

12 ft  

Side slopes

1.5:1  

Water depth

10.4 ft  

Lining thickness

4.5 in  

Location

On the Wahluke Branch Canal beginning at the turnout from the Potholes Canal.

Construction period

1956-1959  

Length

3 mi  

Diameter

15.33 ft  

Diversion capacity

2,000 cfs  

Designation

Number of units

Total capacity, cfs

Total dynamic head, ft

Total horsepower

Grand Coulee Pump-Generating Plant

  8

12,640       

292-310       

525,000       

Block No. 1 - 5 relift plants

  8

103       

6-35       

428       

Block No. 2 -

   Burbank No. 1

  3

40.5       

90       

600       

   Burbank BP 0.3

  1

9       

24       

30       

Block No. 3 -

   Burbank No. 2

  3

57       

81       

750       

   Burbank No. 3

  4

29.5       

85       

400       

Block No. 11 -

   Lower Scooteney

  3

76       

149       

1,500       

   Upper Scooteney

  3

24       

97       

300       

   Upper Scooteney (PE 27A - 2nd relift)

  1

9       

155       

200       

   2 plants

  2

5.75       

14       

15       

Block No. 12 - 2 plants

  3

17       

4-27       

45       

Block No. 13 - 6 plants

  6

25.3       

10.5-22       

75       

Block No. 14 -

   Mesa

  4

160       

82       

1,800       

   9 plants

18

103       

5.5-28       

241       

Block No. 15 -

   Ringold

  4

232       

35-38       

1,230       

   Ringold relift

  3

118       

14.5       

480       

   12 plants

17

153.7       

6-52       

923       

Block No. 16 -

   Eltopia Branch

  3

72       

50       

600       

   11 plants

20

110       

10.5-70       

870       

Block No. 161 - 1 plant

  3

28       

26       

120       

Block No. 17 -Sagemoor

  4

88       

91       

1,200       

Block No. 18 -13 plants

26

177.8       

5.5-34.5       

355.5       

Block No. 19 - 5 plants

  8

37.6       

7.5-70       

205       

Block No. 20 -

   White Bluffs No. 1

  4

178       

85       

2,000       

   9 plants

17

95.7       

8-72       

500       

Blocks No. 21 and 48 -Radar

  5

256       

118-277       

8,100       

Blocks No 23 and 201-White Bluffs No 2

  6

222       

63-106       

2,250       

Block No. 23 - 3 plants

  7

20       

15-18       

72.5       

Block No. 24 - 1 plant

  3

36       

260       

1,500       

Block No. 201 - 1 plant

  2

10.2       

11       

20       

Block No. 40 - 5 plants

  8

40       

11-45       

125       

Block No. 401 - 2 plants

  3

35.8       

11-25.5       

125       

Block No. 41 - 7 plants

13

95       

5-35       

297.5       

Block No. 42 - 9 plants

18

135       

10-32       

522.5       

Block No. 43 - 7 plants

  9

54.1       

4-64       

268       

Block No. 44 -

   Warden

  3

135       

55       

1,050       

   North Warden

  3

72       

57       

600       

   Warden Relift

  4

57       

51-96       

550       

   6 plants

  8

49       

12-125       

525       

Block No. 45 - 15 plants

24

165.5       

7-45       

528       

Block No. 46 - 1 plant

  2

8       

22-23       

32.5       

Block No. 47 - 5 plants

  8

43       

8.5-23       

130       

Block No. 48 - 1 plant

  2

14.4       

17       

40       

Block No. 49 -

   Lower Saddle Gap

  4

112       

94       

1,600       

   Upper Saddle Gap

  4

90       

15-113       

1,365       

   PE-17

  1

14       

86       

200       

Block No. 70 -

   W-9

  3

47       

85-230       

1,100       

   2 plants

  2

25       

7-54       

140       

Block No. 71 - 2 plants

  2

17       

6-29.5       

63       

Block No. 72 - 11 plants

12

60       

5-90       

302.5       

Block No. 73 -

   Quincy

  9

421       

59-260       

10,018       

   2 plants

  3

17.3       

13-80       

90       

Block No. 74 -

   Babcock

10

292       

44-221       

6,200       

   Babcock W.W. disposal

  2

20       

32       

120       

Block No. 741 - 1 plant

  3

17.2       

70       

190       

Block No. 75 -

   3 plants

  5

35       

8-18       

85       

   1 plant

  1

3       

21.5       

12.5       

Block No. 76 - 2 plants

10

99.6       

5-20       

185       

Block No. 77 -

   Evergreen

  8

253       

83-222       

6,800      

   2 plants

  4

47.2       

18-20       

127.5

Block No. 78 - 4 plants

  6

51       

6-13       

102.5       

Block No. 79 -1 Plant

  1

3       

20       

10       

Frenchman Springs

  8

197       

54-264       

4,700       

Block No. 80 - Hope Valley

  3

60       

84       

760       

Blocks No. 80 and 81 - Frenchman Hills

  9

432       

170-314       

13,500       

Block No. 82 - Low Gap

  4

85.6       

72       

900       

Block No. 83 -

   Sand Hollow

  4

178       

65       

1,600       

   6 plants

11

44.4       

6-20       

95       

Block No. 85 - 4 plants

  6

21.4       

9-18       

65       

Block No. 86 - 1 plant

  1

3       

16       

10       

Block No. 87 - 5 plants

10

47       

6.5-51       

220       

Block No. 88 - 1 plant

  2

11       

7       

15       

Block No. 89 - 14 plants

28

134.3       

5-33       

365       

Soap Lake Protective Works
       Block No. 70 -

   Lake Lenore No. 1

  4

35       

60       

350       

   Lake Lenore No. 2

  5

40       

197       

1,200       

   Lake Lenore No. 3

  1

4       

250       

150       

   6 deep wells

  6

16.8       

220-304       

800