Bureau of Reclamation Banner
Collbran Project
Collbran Project | Project History | Project Data | Contact Information

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

 

  

Project # 482

 

Land Areas (1992)
Irrigable area:
Full Irrigation Service0 acres
Supplemental Service21,305 acres
Temporary Irrigation Service0 acres
Number of Irrigated Farms190
Residential, Commercial, Industrial Lands905 acres
Total Irrigable Lands22,210 acres

 

Population Served:
Farm Population Served528
Non-Farm Population Served900
Total Population Served1,428

Return to top

Area Irrigated and Crop Value
Area Irrigated and Crop Value
YearActual Area Irrigated (Acres)Crop Value (Dollars)
198320,1352,295,625
198420,1152,488,350
198520,2252,138,830
198620,2451,881,483
198720,2102,129,741
198820,2952,472,105
198920,1702,718,970
199019,8802,124,640
199119,9312,193,268
199211,1001,182,232

Return to top

Project Water Supply
Project Water Quality

 

   

Project Water Supply

Current Conditions

Streamflow

Plateau Creek near Cameo, Colorado (USGS)
Colorado River near Cameo, Colorado (USGS)
Streamflow Forecast Map

Spring and Summer (NRCS)
Snowpack Information

Columbia River Snowpack Summary (NRCS)
Mountain Snowpack Maps for Colorado River Basin
Drought Index

Palmer Drought Index Map


Historic Conditions


Annual Precipitation
Normal14.48 in
Maximum - 196922.02
Minimum - 19767.23 in
Collbran, Colorado 1961-1990 

 

Temperature
Mean Annual46.2 ?F
Daily Maximum - 08/02/1902100 ?F
Daily Minimum - 02/08/1933-36 ?F
Collbran, Colorado 1900-1996 
Growing Season155 days
Elevation of irrigable area5,500-7,000 ft

 

Plateau Creek
Drainage area near Collbran, Colorado88 sq mi
Annual discharge: 
Maximum acre-ft
Minimumacre-ft
Averageacre-ft


Big Creek

Drainage area at Upper Station20 sq mi
Annual discharge: 
Maximum acre-ft
Minimumacre-ft
Averageacre-ft


Cottonwood Creek

Drainage area at Upper Station20 sq mi
Annual discharge: 
Maximum acre-ft
Minimumacre-ft
Averageacre-ft

Return to top

Project Water Quality

Colorado Headquarters - Plateau

Return to top

Facilities in Operation
Storage Facilities
Diversion Facilities
Carriage Facilities
Power Facilities
Pumping Plants

 

   

 

Facilities in Operation
Storage Dams16
Diversion Dams3
Canals37 mi
Power Plants2
Pipelines and Penstocks18 mi

 

The number of Storage Dams: 16 - includes main storage dam, Vega, and 15 privately-owned dams.

Return to top

 

Storage Facilities

 

Big Creek Dam

Bonham Dam

Cottonwood No. 1 Dam

Cottonwood No. 2 Dam

Cottonwood No. 2 Dike Dam

Cottonwood No. 4 Dam

Cottonwood No. 5 Dam

DeCamp Dam

Forty Acre Lake Dam

Kitson Dam

Lambert Dam

Little Meadows Dam

Neversweat Dam

Silver Lake Dam

Vega Dam

Return to top

 

Diversion Facilities
East Fork Diversion Dam
TypeConcrete weir with embankment wings
LocationEast Fork of Big Creek
Year Completed1962
Dimensions: 
Height above streambed8 ft
Weir crest length29 ft
Total crest length120 ft
Weir crest elevation9,863.2 ft
Volume, concrete144 cu yd
Sluiceway:6-ft square radial gate
Headworks:3-ft square slide gate
Diversion capacity30 cfs

 

Leon Creek Diversion Dam
TypeConcrete Ogee
LocationOn Leon Creek about 8 miles east of Collbran, Colorado
Year Completed1960
Dimensions: 
Height above streambed10 ft
Weir crest length51 ft
Total crest length230 ft
Weir crest elevation8,026.0 ft
Volume, concrete2,000 cu yd
Overflow weir capacity2,000 cfs
Headworks:Concrete with three 5-ft-square control gates.
Diversion capacity350 cfs

 

Park Creek Diversion Dam
TypeConcrete Ogee
LocationOn Park Creek about 8 miles east of Collbran, Colorado
Year Completed1960
Dimensions: 
Height above streambed8 ft
Weir crest length16 ft
Total crest length140 ft
Weir crest elevation8,020.2 ft
Volume, concrete1,000 cu yd
Overflow weir capacity700 cfs
Headworks:Concrete with three 4-ft-square control gates.
Diversion capacity150 cfs

Return to top

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
Length2.7 mi
Diversion capacity350 cfs
Typical section, unlined: 
Bottom width16 ft
Side slopes1.5:1
Water depth5.8 ft

 

Southside Canal
Location:From Vega Dam westerly to a point on Mesa Creek 3.25 miles south of Mesa, Colorado.
Construction period:1959-1960
Length32.8 mi
Diversion capacity240 cfs
Typical section, unlined: 
Bottom width16 ft
Side slopes1.5:1
Water depth4.4 ft

 

Southside Tunnel
Location:In the divide between Salt and Tea Creeks on alignment of Southside Canal.
Construction period:1958-1960
Length2,389 ft
Diversion capacity240 cfs
Cross section:Horseshoe
Height6.25 ft
Width6.25 ft
Lining thickness:Concrete, 3.5-7 in

 

East Fork Feeder Canal
Location:From East Fork westerly to Bonham Reservoir.
Construction period:1961-1962
Length1.3 mi
Diversion capacity35 cfs
Typical section, unlined: 
Bottom width4 ft
Side slopes1.5:1
Water depth2.4 ft

 

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.
Construction period:1959-1962
Bonham section: 
Maximum capacity50 cfs
Length5.4 mi
Diameter 
Minimun inside31 in
Maximum inside36 in
Cottonwood section: 
Maximum capacity28.3 cfs
Length4.2 mi
Diameter 
Minimun inside18 in
Maximum inside36 in

 

Upper Molina Penstock
Type:Steel Plate
Location:From Bonham-Cottonwood pipeline northwest to Upper Molina Powerplant, southwest of Collbran, Colorado.
Construction period:1959-1961
Diameter36 in
Length4 mi
Capacity50 cfs

 

Lower Molina Penstock
Type:Steel Plate
Location:From Upper Molina Powerplant to Lower Molina Powerplant, southwest of Collbran, Colorado.
Construction period:1959-1961
Diameter36 in
Length4.7 mi
Capacity50 cfs

Return to top

Power Facilities

Lower Molina Powerplant

Upper Molina Powerplant

Return to top


Last updated: Apr 18, 2011