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Allison Draw Flood Control Channel - West Greeley Phase

Laramie County, Wyoming

Cheyenne Field Office

This "3-Phase"project consists of the construction of a flood control channel through the southern part of Cheyenne, Wyoming.  The watershed is approximately 11,500 acres and the channel is designed to contain the 25 year storm event.

West Greeley Phase: Photographs During Construction

Channel Excavation
 Channel Excavation

Dozer and Excavator
 Dozer and Excavator

Excavator
 Channel Excavation

Geotextile Placement
Geotextile Placement
 

Geotextile and Riprap Placement
Geotextile and Riprap 
Placement

D6 Topsoiling
 D6 Topsoiling

Topsoil Placement
 D6 Topsoiling
 

Scraper Spreading Topsoil
Scraper Spreading 
Topsoil

Excavation During Construction

Channel Excavation

Fine Grading Side Slopes
 Fine Grading Side Slopes

 

Concrete Lined Channel Crossing Construction
Concrete Lined Channel 
Crossing

Air Entrainment Test
Royden James, Project 
Engineer Running Air 
EntrainmentTest

Concrete Slab Construction
Concrete Pour on 
Channel Crossing Slab

Concrete Pour During Channel Crossing Construction
Concrete Pour on
Channel Crossing Slab

Dowel Connections on Concrete Slab Pour
1-1/4" Slab Connnecting 
Dowels

Riprap Placement Along Concrete Lined Channel
Concrete Channel 
Crossing, Prep Work for 
RiprapPlacement on
Sideslope

Concrete Lined Channel Crossing Near Completion
Concrete Channel 
Crossing

 

 

 

West Greeley Phase:  Photographs After Construction

Riprap Lined Channel
Riprap Lined Channel,
Looking West

State Conservation Engineer and Project Engineer
Mark Opitz, State Conservation Engineer & Royden James, Project Engineer

Riprap/Earth Lined Channel Transition
Riprap/Earth Channel Width Transition, Looking  South to Prosser Road

Earth Channel After Construction
Earth Channel, Looking North
 

Earth Channel Looking South Towards College Drive
Earth Channel, Looking South Toward College Drive

Channel Curve with Riprap into Prosser Road Crossing
Channel Curve with Riprap into Prosser Road Crossing

Channel Side Slope
Channel Side Slope
 

Channel Bottom, Looking South to College Drive
Channel Bottom, Looking South to College Drive

Riprap Lined Channel Curve with Side Drainage Inlet
Channel Curve Riprap with Side Drainage Inlet

Channel Curve with Riprap Protection
Channel Curve with Riprap Protection, Looking East

Channel Width Transition
Earth/Riprap Channel Width Transition, Looking North

Grouted Riprap Protection on Side Drainage Inlet
Grouted Riprap Protection from Side Drainage Inlet

Finished Concrete Lined Channel Crossing

Concrete Lined Channel Crossing

 

Riprap Protection on Side Drainage Inlet into Channel


Side Drainage into Channel w/ Riprap Protection


 

Riprap Lined Channel at Concrete Crossing

Riprap Lined Channel w/ Concrete Crossing and Open Channel Drainage Covered w/ Roadway Grating

Roadway Grating on Concrete Channel Crossing
Roadway Grating

Channel After Seeding Completed
Channel Seeded

Finishished Channel After Seeding
Channel Seeded

Seeded Constructed Channel
Channel Seeded
 

Channel After Seeding Completed Along Curve
Channel Seeded
 

Riprap Lined Channel with Seeded Banks
Riprap Lined Channel w/ Seeded Banks