Storage Dams

6       

Diversion Dams

2       

Canals

721 mi  

Laterals

1,323 mi  

Pumping Plants

7       

Drains

649 mi  

Powerplants

3       

Transmission Lines

     31.8 mi  

Substations

7       

Type:

Concrete and masonry weir, with provision for flash boards

Location

On the Boise River, 7 miles southeast of Boise, Idaho.

Year Completed

1908  

Dimensions:

   Structure height

68 ft  

   Hydraulic height

39 ft  

   Crest length

500 ft  

   Crest elevation

 2812.84 ft  

   Volume

26,100 yd³  

Spillway:

Ogee Overflow

   Capacity

40,000 cfs  

Headworks: .

Eight 5- by 6-ft motor-operated slide gates

   Diversion capacity

 2,815 cfs  

Location

From Boise River Diversion Dam, generally west to Lake Lowell.

Construction period

1906-1908 (Enlarged 1909-1912)  

Length

40 mi  

Diversion capacity

2,800 cfs  

Typical section in earth:

   Bottom width

70 ft  

   Side slopes

1.5:1  

   Water depth

  8 ft  

Typical section, concrete lined:

   Bottom width

40 ft  

   Side slopes

1.5:1  

   Water depth

  8 ft  

   Lining thickness

  4 in  

Location

From a point on New York Canal about 13 miles west of Boise River Diversion Dam, then northwest past Lake Lowell.

Construction period

1909-1911  

Length

  56 mi  

Diversion capacity

1,300 cfs  

Typical section in earth:

   Bottom width

55 ft  

   Side slopes

1.5:1  

   Water depth

     4.5 ft  

Location

Near northwest end of Lake Lowell.

Construction period

1909-1910  

Length

22 mi  

Diversion capacity

130 cfs  

Typical section in earth:

   Bottom width

20 ft  

   Side slopes

1.5:1  

   Water depth

   3.5 ft  

Location

From Lake Lowell northwest about 10 miles, then generally southwest along Snake River.

Construction period

1907-1908  
Enlarged from 800 to 1,000 cubic feet per second in 1915-1916  

Length

     36.7 mi  

Diversion capacity

1,200 cfs  

Typical section in earth:

   Bottom width

45 ft  

   Side slopes

1.5:1  

   Water depth

  6 ft  

Location

From a point on Deer Flat Low Line Canal about 5 miles from Lake Lowell, then northwest about 10 miles.

Construction period

1908-1909  

Length

   18.8 mi  

Diversion capacity

500 cfs  

Typical section in earth:

   Bottom width

40 ft  

   Side slopes

1.5:1  

   Water depth

    3.4 ft  

Location

From Black Canyon Dam south, then generally west along Payette River.

Construction period

1936-1940  

Length

  29 mi  

Diversion capacity

1,300 cfs  

Location

From point on Black Canyon Canal about 15 miles from Black Canyon Dam generally west to vicinity of Snake River.

Construction period

1938-1940  

Length

33 mi  

Diversion capacity

 226 cfs  

Typical section in earth:

   Bottom width

12 ft  

   Side slopes

1.5:1  

   Water depth

    5.4 ft  

Location

From point on Black Canyon Canal about 15 miles from Black Canyon Dam generally west to vicinity of Snake River.

Construction period

1938-1940  

Length

39 mi  

Diversion capacity

254 cfs  

Typical section in earth:

   Bottom width

12 ft  

   Side slopes

1.5:1  

   Water depth

    5.4 ft  

Location

From "C" Line Canal Pumping Plant on Black Canyon Canal generally southwest about 10 miles to vicinity of Willow Creek Pumping Plant.

Construction period

1946-1948  

Length

21 mi  

Diversion capacity

469 cfs  

Typical section in earth:

   Bottom width

16 ft   

   Side slopes

1.5:1  

   Water depth

   7.5 ft  

Location

From about Mile 1 on "C" line Canal East, then generally west.

Construction period

1946-1947  

Length

24 mi  

Diversion capacity

60 cfs  

Typical section in earth:

   Bottom width

7 ft  

   Side slopes

1.5:1  

   Water depth

3 ft  

Location

Near Caldwell, Idaho

Construction period

1919-1920  

Length

 25 mi  

Diversion capacity

  120 cfs  

Typical section in earth:

   Bottom width

16 ft  

   Side slopes

1.5:1  

   Water depth

  3 ft  

Typical section, concrete lined:

   Bottom width

12 ft  

   Side slopes

1.5:1  

   Water depth

  3 ft  

   Lining thickness

3 and 3.5 in  

Designation

Number of units

Total capacity, cfs

Total dynamic head, ft

Total    horsepower

"C" Line Canal

5

600

92

7,250

Black Canyon

2

270

27

1,250

Willow Creek

2

  27

39

   160

"C" Line Relift Plants No. 7, 8, 10, & 11

       8.5

16-24