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Collbran Project - Main Page
Facilities in Operation
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Storage Dams |
161 |
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Diversion Dams |
3 |
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Canals |
37 mi |
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Power Plants |
2 |
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Pipelines and Penstocks |
18 mi |
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1 Includes main storage dam, Vega, and 15 privately-owned dams. |
Storage Facilities
Atkinson Dam and Dike
Big Creek Dam
Big Meadows Dam and Dike
Bonham Dam
Cottonwood Lake No. 1 Dam
Cottonwood Lake No. 2 Dam and Dike
Cottonwood Lake No. 4 Dam
Cottonwood Lake No. 5 Dam
DeCamp Dam
Forty Acre Lake Dam
Kitson Dam
Lambert Dam
Little Meadows Dam
Neversweat Dam
Silver Lake Dam
Vega Dam
Diversion Facilities
East Fork Diversion Dam
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Type |
Concrete weir with embankment wings |
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Location |
East Fork of Big Creek |
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Year Completed |
1962 |
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Dimensions: |
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Height above streambed |
8 ft |
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Weir crest length |
29 ft |
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Total crest length |
120 ft |
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Weir crest elevation |
9,863.2 ft |
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Volume, concrete |
144 yd3 |
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Sluiceway: |
6-ft square radial gate |
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Headworks: |
3-ft square slide gate |
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Diversion capacity |
30 cfs |
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Leon Creek Diversion Dam
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Type |
Concrete Ogee |
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Location |
On Leon Creek about 8 miles east of Collbran, Colorado |
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Year Completed |
1960 |
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Dimensions: |
|
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Height above streambed |
10 ft |
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Weir crest length |
51 ft |
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Total crest length |
230 ft |
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Weir crest elevation |
8,026.0 ft |
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Volume, concrete |
2,000 yd3 |
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Overflow weir capacity |
2,000 cfs |
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Headworks: |
Concrete with three 5-ft-square control gates. |
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Diversion capacity |
350 cfs |
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Park Creek Diversion Dam
|
Type |
Concrete Ogee |
|
Location |
On Park Creek about 8 miles east of Collbran, Colorado |
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Year Completed |
1960 |
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Dimensions: |
|
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Height above streambed |
8 ft |
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Weir crest length |
16 ft |
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Total crest length |
140 ft |
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Weir crest elevation |
8,020.2 ft |
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Volume, concrete |
1,000 yd3 |
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Overflow weir capacity |
700 cfs |
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Headworks: |
Concrete with three 4-ft-square control gates. |
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Diversion capacity |
150 cfs |
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Carriage Facilities
Leon-Park Feeder Canal
|
Location |
From Leon Creek Diversion Dam to Park Creek and from Park Creek Diversion to Vega Reservoir. |
|
Construction period |
1960-1961 |
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Length |
2.7 mi |
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Diversion capacity |
350 cfs |
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Typical section, unlined: |
|
|
Bottom width |
16 ft |
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Side slopes |
1.5:1 |
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Water depth |
5.8 ft |
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Southside Canal
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Location |
From Vega Dam westerly to a point on Mesa Creek 3.25 miles south of Mesa, Colorado. |
|
Construction period |
1959-1960 |
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Length |
32.8 mi |
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Diversion capacity |
240 cfs |
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Typical section, unlined: |
|
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Bottom width |
16 ft |
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Side slopes |
1.5:1 |
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Water depth |
4.4 ft |
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Southside Tunnel
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Location |
In the divide between Salt and Tea Creeks on alignment of Southside Canal. |
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Construction period |
1958-1960 |
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Length |
2,389 ft |
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Diversion capacity |
240 cfs |
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Cross section: |
Horseshoe |
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Height |
6.25 ft |
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Width |
6.25 ft |
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Lining thickness: |
Concrete, 3.5-7 in |
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East Fork Feeder Canal
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Location |
From East Fork westerly to Bonham Reservoir. |
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Construction period |
1961-1962 |
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Length |
1.3 mi |
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Diversion capacity |
35 cfs |
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Typical section, unlined: |
|
|
Bottom width |
4 ft |
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Side slopes |
1.5:1 |
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Water depth |
2.4 ft |
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Bonham-Cottonwood Pipeline
|
Type |
Pretensioned reinforced concrete pressure pipe |
|
Location |
From Bonham Reservoir northwest and from Cottonwood Reservoirs No. 1, 2, 4, and 5, and Decamp, Kitson, Little Meadows, and Big Meadows Reservoirs north to a junction with Upper Molina penstock. |
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Construction period |
1959-1962 |
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Bonham section: |
|
|
Maximum capacity |
50 cfs |
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Length |
5.4 mi |
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Diameter |
|
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Minimun inside |
31 in |
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Maximum inside |
36 in |
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Cottonwood section: |
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Maximum capacity |
28.3 cfs |
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Length |
4.2 mi |
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Diameter |
|
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Minimum inside |
18 in |
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Maximum inside |
36 in |
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Upper Molina Penstock
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Type |
Steel plate |
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Location |
From Bonham-Cottonwood pipeline northwest to Upper Molina Powerplant, southwest of Collbran, Colorado. |
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Construction period |
1959-1961 |
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Diameter |
36 in |
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Length |
4 mi |
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Capacity |
50 cfs |
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Lower Molina Penstock
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Type |
Steel plate |
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Location |
From Upper Molina Powerplant to Lower Molina Powerplant, southwest of Collbran, Colorado. |
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Construction period |
1959-1961 |
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Diameter |
36 in |
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Length |
4.7 mi |
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Capacity |
50 cfs |
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Power Facilities
Lower Molina Powerplant
Upper Molina Powerplant
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