Citizen    Government    Business    Visitor
Wyoming Water Development Commission 
Harry C. LaBonde, Jr., PE, Director 
6920 Yellowtail Rd, Cheyenne, WY 82002 
Phone: 307-777-7626 

Agency Information
 Mission Statement
 Commission Agendas & Minutes
 Consultant Selection
 Items Open for Public Comment
 Operating Criteria
 Project Application Information
 Send Us Your Comments

Planning Program
 Dam and Reservoir Planning
 Groundwater Grant Projects
 Instream Flow Filings
 Current Planning Projects
 River Basin Planning
 Weather Modification Study
 Probable Maximum Precipitation
 Water Research Projects

Construction Program
 Current Construction Projects
 Small Water Projects

Agency Publications
 Project Reports
 Water/Climate Web Atlas
 Irrigation & Water System Surveys
 Legislative Reports
 Water Mgmnt & Conservation Dir
 History of Wyoming Water Law

WWDC Home Page

Water Plan Home Page

WRDS Home Page

Active Projects

108.PROJECT:Riverton Valley Rehabilitation #2, Phase II/Riverton Valley
Underflow Project
SPONSOR:Riverton Valley Irrigation District
LOCATION:Fremont County
Purpose Chapter Session Account Appropriation Due Date
Level II 7 2002 II $40,000 2004

The district has approached the Commission for Level III construction funds to rehabilitate four underflow structures that were evaluated during a recently completed Level II Study. These 1930's vintage structures handle upstream return flow and flood flow and protect the canal from flood related erosion. The four crossings are in various states of disrepair, with Madden Draw being in the worst condition, as the underflow structure has already partially failed (caved in). Additionally, the corrugated metal pipe utilized at these crossings is not sized correctly to handle extreme events. Rehabilitation of these crossings would provide protection to the canal during flood flows and ultimately improve the ability and reliability of the system to deliver water to the users.

The design and construction costs are displayed below:

Design$ 11,920
Permitting and Mitigation$ 2,500
Legal Fees$ 2,384
Acquisition of Access and Right-of-Way$ 2,384
Project Components$ 94,225
Engineering (10%)$ 9,423
Construction Cost (Subtotal)$ 103,648
Contingency (15%)$ 15,547
Construction Cost Total (Subtotal)$ 119,195
Project Total Construction Cost$ 138,383
Rounded$ 140,000

The WWDC recommends the project be incorporated in the Rehabilitation Program and advanced to Level III construction with an appropriation of $140,000. The financing plan is a 50% grant, $70,000 and a 50% loan, $70,000 for twenty-five years at 6.00% interest.

   Citizen    Government    Business    Visitor   Privacy Policy