Storage Dams

3      

Diversion Dams

2      

Canals

140 mi  

Laterals

564 mi  

Drains

673 mi  

Powerplants

4      

Transmission Lines

163.4 mi  

Substations

4      

Location:

From Buffalo Bill Dam east along south side of Shoshone River Canyon to Heart Mountain Powerplant.

Construction period:

1935-1940  

Description:

Consists principally of three tunnel sections connected by concrete conduit sections.

Length

2.8 mi  

Capacity

1,200 cfs  

Cross section:

Horseshoe

Diameter

12 ft  

Lining

Concrete

Location:

Across the Shoshone River from end of Shoshone Canyon Conduit, near Heart Mountain Powerplant.

Construction period:

1939  

Description:

   Concrete siphon barrel

793 ft  

   Steel siphon barrel

847 ft  

Total Length

1,640 ft  

Diameter

123 in  

Capacity

915 cfs  

Location:

From Heart Mountain Powerplant generally north.

Construction period:

1937-1947  

Length

26.2 mi  

Diversion capacity

915 cfs  

Typical section in earth:

   Bottom width

32 ft  

   Side slopes

1.5:1  

   Water depth

8.4 ft  

Typical section, concrete lined:

   Bottom width

8 ft  

   Side slopes

1.25:1  

   Water depth

7.51 ft  

   Lining thickness

4 in  

Location:

From lower end of Corbett Tunnel 3.25 miles below Corbett Dam on the Shoshone River about 6 miles northeast of Cody, Wyoming, generally northeast to vicinity of Garland, Wyoming.

Construction period:

1906-1908  

Length¹

18.5 mi  

Diversion capacity

1,000 cfs  

Typical section in earth:

   Bottom width

40 ft  

   Side slopes

2:1  

   Water depth

6.5 ft  

Location:

From Corbett Dam north.

Construction period:

1905-1907  

Length

17,357 ft  

Capacity

1,000 cfs  

Cross section:

Rectangular arched roof

   Height

129 in  

   Width

138 in  

Lining:

Concrete

   Lining thickness

9 in  

Location:

From Garland Canal near Ralston, Wyoming, generally northeast to vicinity of Frannie, Wyoming.

Construction period:

1917-1920  

Length

44 mi  

Diversion capacity

550 cfs  

Typical section in earth:

   Bottom width

36 ft  

   Side slopes

2:1  

   Water depth

4.5 ft  

Location:

From mile 14 on Frannie Canal, about 6 miles northeast of Powell, Wyoming, generally northeast past Deaver Reservoir.

Construction period:

1916-1917  

Length

24 mi  

Diversion capacity

194 cfs  

Typical section in earth:

    Bottom width

20 ft  

    Side slopes

1.5:1  

    Water depth

3.6 ft  

Location:

From Willwood Diversion Dam on the Shoshone River about 5 mi southwest of Ralston, Wyoming, generally east to a point about 4.5 mi south of Penrose.

Construction period:

1924-1927  

Length

27.5 mi  

Diversion capacity

320 cfs  

Typical section in earth:

    Bottom width

10 ft  

    Side slopes

1.5:1  

    Water depth

5 ft  

Typical section in rock:

    Bottom width

10 ft  

    Side slopes

0.75:1  

    Water depth

5 ft