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

 

  

Project # 222

 

Land Areas (1992)
Irrigable area:
Full Irrigation Service 549,801 acres
Supplemental Service 0 acres
Temporary Irrigation Service 0 acres
Number of Irrigated Farms 2,050
Residential, Commercial, Industrial Lands 7,729 acres
Total Irrigable Lands 557,530 acres

 

Population Served
Farm Population Served 12,577
Non-Farm Population Served 7,566
Total Population Served 20,143

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Area Irrigated and Crop Value
Area Irrigated and Crop Value
Year Actual Area Irrigated (Acres) Crop Value (Dollars)
1983 479,279 342,577,238
1984 342,577,238 340,311,552
1985 342,577,238 343,998,595
1986 515,457 342,315,663
1987 505,616 322,448,483
1988 516,016 433,033,093
1989 524,043 479,721,076
1990 529,685 497,995,456
1991 526,602 547,733,898
1992 530,086 552,343,334

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Project Water Supply
Project Water Quality

 

    

Project Water Supply

 

Current Conditions

 

Reservoir Storage

Grand Coulee Dam

Weather Conditions (NOAA)

Precipitation

Streamflow

Columbia River at International Boundary, Washington (USGS)

Streamflow Forecast Map

Spring and Summer (NRCS)

Snowpack Information

Columbia River Snowpack Summary
Mountain Snowpack Maps for Colombia River Basin

Drought Index

Palmer Drought Index Map
Explanation of Palmer Drought Severity Index (Text)
 

Climatic Conditions

 

   
   
   
   

 

Historic Conditions

 

Annual Precipitation
Normal 7.83 in
Maximum - 1983 14.03 in
Minimum - 1976 3.61 in
Quincy, Washington 1961-1990

 

Temperature
Mean Annual 49.8 ?F
Daily Maximum - 07/16/1941 109 ?F
Daily Minimum - 01/31/1950 -29 ?F
Quincy, Washington 1941-1996  
Growing Season 212 days
Elevation of irrigable area  
Northern Part 1,500 ft
Southern Part 500 ft

 

Columbia River
Drainage area above Coulee Dam 74,100 sq mi
Annual discharge  
Maximum - 1972 101,288,880 acre-ft
Minimum - 1944 51,566,526 acre-ft
Average - 1930-1996 78,250,374 acre-ft

Streamflow: Columbia River at Grand Coulee, Washington (USGS)

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Project Water Quality

Banks Lake

Chief Joseph

Franklin D. Roosevelt Lake

Lower Crab

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

 

    

Facilities in Operation
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

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Storage Facilities

Dry Falls Dam

Grand Coulee Dam

North Dam

O`Sullivan Dam

Pinto Dam

Soda Lake Dike

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Regulatory Facilities

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Diversion Facilities

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Carriage Facilities
Feeder Canal
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.

 

Main Canal
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

 

Bacon Tunnel No. 1 - Main Canal
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

 

Bacon Siphon No. 1 - Main Canal
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

 

Bacon Tunnel No. 2 - Main Canal
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

 

Bacon Siphon No. 2 - Main Canal
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

 

West Canal
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

 

Soap Lake Siphon - West Canal
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

 

Frenchman Hills Tunnel - West Canal
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

 

Royal Branch Canal - West Canal
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

 

East Low Canal
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

 

Potholes Canal
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

 

Eltopia Branch Canal - Potholes Canal
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

 

Wahluke Branch Canal - Potholes Canal
Location: Southwest from the turnout on Potholes Canal about 6 miles south of Othello, Washington.
Construction period: 1957-1967
Length 41 mi
Diversion capacity 2000 cfs
Typical section in earth:  
Bottom width 36 ft
Side slopes 1.5:1
Water depth 9 ft
Typical section in concrete lined:  
Bottom width 12 ft
Side slopes 1.5:1
Water depth 10.4 ft
Lining thickness 4.5 in

 

Wahluke Siphon - Wahluke Branch Canal
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 2000 cfs

 

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Power Facilities

Grand Coulee Powerplant Complex

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Pumping Plants
Designation Number of units Total capacity, cfs Total dynamic head, ft Total horsepower
Grand Coulee Pump-Generating Plant 12 17,730 292-310 525,000
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 - 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 10.5-70 205
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 37.5 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

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Last updated: Feb 01, 2016