BOARD02045

• Board Meeting Date: 9/13/2005
• Description: CF Section - New Loans - High Line Canal Company - Smith Arroyo Siphon Replacement Project
• Board Meetings - Doc Type: Memo

High Line Canal Company
September 6. 2005
Page 2 of 4

Agenda Item 12c

I

The siphon was designed in 1918 and construction is assumed to have occurred shortly thereafter. _
Currently the siphon is protected by a trash rack system that consists of six large drill rods situated ..
at the entrance to the siphon. Trash is routinely removed from the inlet and on occasion causes
complete blockage. The pipeline is 300 feet long with approximately 150 feet of it installed below
bedrock.

Feasibility Study

The feasibility study was prepared by members of the design team. The team consists of Gary
Lake, PE, of Lake Engineering Consultants, Inc.; Brice Boesch, PE, of Boesch-Fisher Engineering,
Inc.; Gerald Knudsen, PE, of Knudsen Engineering. In addition, financial information was provided
by Dan Henrich, Company Superintendent and Dennis Tabor of Tabor Accounting. The study was
prepared as required by the CWCB guidelines and includes preliminary engineering design and
cost estimates prepared by Lake Engineering Consultants.

The HiClh Line Canal Company

The Company is a non-profit mutual ditch company registered in the State of Colorado. The
Company was incorporated in 1889. The Company consists of 230 shareholders and has a total of
2,250 shares of stock. Shares are owned by agricultural land owners; however, the Town of
Manzanola owns 4 shares (<1 %) of stock and currently leases the water to a local rancher.
According to the Company's Bylaws, the Company has the power to make assessments and sell
stock owned by a delinquent stockholder for the purpose of paying such delinquent assessments.
Some individual shareholders have leased water to Aurora, Colorado during the last couple years.
This activity has occurred with Company support. .

Water RiClhts

The Company has decreed surface water rights of 501 cfs at the diversion structure on the south
bank of the Arkansas River. The average annual amount of irrigation water delivered through the
Canal system is 100,000 acre-feet. The Company's water rights are considered very senior on the
Arkansas River and are listed below with the respective appropriation dates:

1.
2.
3.
4.
5.
6.
7.
Total

Proiect Description

Flow
(cfs)
40
0.6
16
32.5
30
2
380.5
501.6

Appropriation
Date
1861
1867
1869
1884
1885
1886
1890

The purpose of this project is to replace the existing 85 year-old concrete encased stave siphon
pipeline. The pipeline was inspected in 1999 and the results indicated the wood stave pipe has
deteriorated and most of the wood is missing. In addition, several areas are showing significant
spalling and exposed rebar from the deteriorated concrete encasement. There are several cracks in
the encasement and wet ground was observed near the pipe alignment that could have resulted

.