Diversion Dams

1      

Canals

17 mi  

Laterals

21 mi  

Type:

Earthfill and rockfill, non overflow

Location

Offstream on side channel of the Clark Fork River, about 6 miles west of Missoula, Montana.

Year Completed

1936  

Dimensions:

   Structural height

16 ft  

   Hydraulic height

13 ft  

   Crest length

489 ft  

   Crest width

15 ft  

   Crest elevation

3,090.0 ft  

   Volume

12,000 yd³  

Headworks:

Two 4-ft-square gates.

   Diversion capacity

172 cfs  

Location

From Frenchtown Diversion Dam generally northwest along the Clark Fork River to vicinity of Huson, Montana.

Construction period

1936-1937  

Length

17 mi  

Diversion capacity

172 cfs  

Typical section in earth:

   Bottom width

12 ft  

   Side slopes

1.5:1  

   Water depth

4.4 ft  

Typical section, concrete, lined:

   Bottom width

6 ft  

   Side slopes

1.5:1  

   Water depth

3.7 ft  

   Lining thickness

3 in