Project details - Columbia Basin Project

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

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

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: Jan 03, 2013