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

 

  

Project # 1978

 

Land Areas (1992)
Irrigable area:
Full Irrigation Service200,651 acres
Supplemental Service161,904 acres
Temporary Irrigation Service0 acres
Number of Irrigated Farms8,982
Residential, Commercial, Industrial Lands34,602 acres
Total Irrigable Lands397,157 acres

 

Population Served:
Farm Population Served28,258
Non-Farm Population Served111,406
Total Population Served139,664

 

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Area Irrigated and Crop Value
YearActual Area Irrigated (Acres)Crop Value (Dollars
1983324,950168,647,200
1984327,039149,081,226
1985325,846135,313,538
1986320,843151,833,166
1987309,723153,335,659
1988308,016157,513,694
1989326,057185,990,361
1990323,241177,638,311
1991323,241177,145,462
1992325,514182,739,499

 

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Project Water Supply
Project Water Quality

 

   

Project Water Supply

Current Conditions

Reservoir Storage

Major Storage Reservoirs in the Boise & Payette River Basins

Weather Conditions (NOAA)

Precipitation

Streamflow

Boise River at Glenwood Bridge near Boise, Idaho (USGS)
Payette River near Horseshoe Bend, Idaho (USGS)

Streamflow Forecast Map

Spring and Summer (NRCS)

Snowpack Information

Columbia River Snowpack Summary (NRCS)
Mountain Snowpack Maps for Columbia River Basin (NRCS)

 Drought Index

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


Historic Conditions


Annual Precipitation
Normal12.11.in
Maximum - 198318.77 in
Minimum - 19666.64 in
Boise, Idaho - 1961-1990 

 

Temperature
Mean Annual50.9?F
Daily Maximum - 07/19/1960111 ?F
Daily Minimum - 12/22/1990-25 ?F
Boise, Idaho - 1940-1996 
Growing Season177 days
Elevation of irrigable2,500 ft

 

Boise River
Drainage area above Boise river Diversion Dam2,680 mi2
Annual discharge: 
Maximum - 19653,462,036 acre-ft
Minimum - 1992836,499 acre-ft
Average - 1895-19962,054,783 acre-ft

 

Payette River
Drainage area above Horseshoe Bend, Idaho2,230 mi2
Annual discharge: 
Maximim - 19963,824,885 acre-ft
Minimum - 19311,016,255 acre-ft
Average - 1906-19962,311,949 acre-ft

 

 

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Project Water Quality

Boise River

Boise-Mores
Lower Boise
North and Middle Forks Boise
South Fork Boise

 


Payette River

Middle Fork Payette
North Fork Payette
Payette
South Fork Payette

 

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Facilities in Operation
Storage Facilities
Diversion Facilities
Carriage Facilities
Pumping Plants

 

   

 

Facilities in Operation
Storage Dams6
Diversion Dams2
Canals721 mi
Laterals1,323 mi
Pumping Plants7
Drains649 mi
Powerplants3
Transmission Lines31.8 mi
Substations7

 

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Storage Facilities

Anderson Ranch Dam

Arrowrock Dam

Deer Flat East Dike (Lake Lowell)

Deer Flat Lower Dam (Lake Lowell)

Deer Flat Middle Dam (Lake Lowell)

Deer Flat Upper Dam (Lake Lowell)

Deadwood Dam

Cascade Dam

Hubbard Dam

 

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Diversion Facilities

Black Canyon Diversion Dam

Type:Concrete gravity, gated ogee spillway
LocationOn the Payette River, 5 miles Northeast of Emmett, Idaho
Year Completed1924
Dimensions: 
Structure height183 ft
Hydraulic height112 ft
Crest length1,040 ft
Crest elevation2500.0 ft
Volume81,200 yd?
Spillway:Ogee Overflow, controlled by three 64-by-15 ft drum gates
Capacity40,000 cfs
Headworks:30-by-11-ft radial gate
Diversion capacity1,360 cfs

Boise River Diversion Dam

Type:Concrete and masonry weir, with provision for flash boards
LocationOn the Boise River, 7 miles southeast of Boise, Idaho.
Year Completed1908
Dimensions: 
Structure height68 ft
Hydraulic height39 ft
Crest length500 ft
Crest elevation2812.84 ft
Volume26,100 yd?
Spillway:Ogee Overflow
Capacity40,000 cfs
Headworks:Eight 5- by 6-ft motor-operated slide gates
Diversion capacity2,815 cfs

 

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Carriage Facilities
New York Canal
LocationFrom Boise River Diversion Dam, generally west to Lake Lowell.
Construction period1906-1908 (Enlarged 1909-1912)
Length40 mi
Diversion capacity2,800 cfs
Typical section in earth: 
Bottom width70 ft
Side slopes1.5:1
Water depth8 ft
Typical section, concrete lined: 
Bottom width40 ft
Side slopes1.5:1
Water depth8 ft
Lining thickness4 in

 

Mora Canal
LocationFrom a point on New York Canal about 13 miles west of Boise River Diversion Dam, then northwest past Lake Lowell.
Construction period1909-1911
Length56 mi
Diversion capacity1,300 cfs
Typical section in earth: 
Bottom width55 ft
Side slopes1.5:1
Water depth4.5 ft

 

Deer Flat High Line Canal
LocationNear northwest end of Lake Lowell.
Construction period1909-1910
Length22 mi
Diversion capacity130 cfs
Typical section in earth: 
Bottom width20 ft
Side slopes1.5:1
Water depth3.5 ft

 

Deer Flat Low Line Canal
LocationFrom Lake Lowell northwest about 10 miles, then generally southwest along Snake River.
Construction period1907-1908Enlarged from 800 to 1,000 cubic feet per second in 1915-1916
Length36.7 mi
Diversion capacity1,200 cfs
Typical section in earth: 
Bottom width45 ft
Side slopes1.5:1
Water depth6 ft

 

Golden Gate Canal
LocationFrom a point on Deer Flat Low Line Canal about 5 miles from Lake Lowell, then northwest about 10 miles.
Construction period1908-1909
Length18.8 mi
Diversion capacity500 cfs
Typical section in earth: 
Bottom width40 ft
Side slopes1.5:1
Water depth3.4 ft

 

Black Canyon Canal
LocationFrom Black Canyon Dam south, then generally west along Payette River.
Construction period1936-1940
Length29 mi
Diversion capacity1,300 cfs

 

`A` Line Canal
LocationFrom point on Black Canyon Canal about 15 miles from Black Canyon Dam generally west to vicinity of Snake River.
Construction period1938-1940
Length33 mi
Diversion capacity226 cfs
Typical section in earth: 
Bottom width12 ft
Side slopes1.5:1
Water depth5.4 ft

 

`D` Line Canal
LocationFrom point on Black Canyon Canal about 15 miles from Black Canyon Dam generally west to vicinity of Snake River.
Construction period1938-1940
Length39 mi
Diversion capacity254 cfs
Typical section in earth: 
Bottom width12 ft
Side slopes1.5:1
Water depth5.4 ft

 

`C` Line Canal East
LocationFrom `C` Line Canal Pumping Plant on Black Canyon Canal generally southwest about 10 miles to vicinity of Willow Creek Pumping Plant.
Construction period1946-1948
Length21 mi
Diversion capacity469 cfs
Typical section in earth: 
Bottom width16 ft
Side slopes1.5:1
Water depth7.5 ft

 

`C` Line Canal West
LocationFrom about Mile 1 on `C` line Canal East, then generally west.
Construction period1946-1947
Length24 mi
Diversion capacity60 cfs
Typical section in earth: 
Bottom width7 ft
Side slopes1.5:1
Water depth3 ft

 

Notus Canal
LocationNear Caldwell, Idaho
Construction period1919-1920
Length25 mi
Diversion capacity120 cfs
Typical section in earth: 
Bottom width16 ft
Side slopes1.5:1
Water depth3 ft
Typical section, concrete lined: 
Bottom width12 ft
Side slopes1.5:1
Water depth3 ft
Lining thickness3 and 3.5 in

 

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Pumping Plants
DesignationNumber of UnitsTotal capacity, cfsTotal dynamic head, ftTotal Horsepower
`C` Line Canal5600927,250
Black Canyon2270271,250
Willow Creek22739160
`C` Line Relift Plants No. 7, 8, 10, & 11 8.516-24 

 

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Last updated: Jan 03, 2013