PROJ00005

• Contract/PO #: C153402
• Contractor Name: Fort Lyon Canal Company
• Water District: 0
• County: Bent
• Bill Number: XB 99-999
• Loan Projects - Doc Type: Feasibility Study

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4. PLAN OF DEVELOPMENT

4.1 Physical Plan

As previously discussed, the Fort Lyon Canal Company operates two systems: the
Fort Lyon Canal Ots direct flow system) and the Fort Lyon Storage Canal and the Horse
Creek - Adobe Creek Reservoir System (its storage system). These canals and their
major features are illustrated in Figures 2, 4, and 5.

The Fort Lyon Canal is about 110 miles long and has an average grade of 2.45 feet
per mile (0.046%) and a capacity ranging from about 1,800 cfs at the head reach to about
600 cfs at the head of the Wheatridge Lateral. The canal diverts streamflows from the
Arkansas River using two diversion dams, as shown in Figures 2 and 4, and delivers this
water to over 200 laterals along its length, as well as to the Kicking Bird Canal for
delivery to the Great Ploins Reservoir system. The main canal is entirely unlined and has
numerous sluicing, control, and conveyance structures situated along its length, including
two small reservoirs, Thurston Reservoir and the Control Basin.

The storage system consists of some 50 miles of unlined canal with an average
grade of 1.64 feet per mile (0.031%) an~ a capacity of about 1,800 cfs. The system
diverts water from the Arkansas River, Horse Creek, and Adobe Creek, for storage in
Horse Creek and Adobe Creek Reservoirs. The system also includes various sluicing,
control, and conveyance structures.

The majority of the Fort Lyon Canal system was constructed during the late 1800's
and early 1900's, with some major reconstruction done as recently as the 1960's. Since
about 1970, however, construction work hos been limited to relatively minor
rehabilitation and repair. The overall condition of the system is presently operational
but in varying states of disrepair, including spalled and deteriorated concrete, corroded
metalwork (gates, stems, hoists, handrails, etc.) and leaky ond/or inoperable gates.
There ore also problems relating to sediment deposition and the control and removal of
trosh and weeds, os well as concerns specific to individual structures and topics.

4.2 Design Criteria and Standards

This section discusses various criteria and procedures used throughaut the report.
Criteria and procedures specific to individual structures or topics, or variations to items
discussed in this section, ore treoted individually with the particular structure or item.

Concrete. Unless otherwise stated, concrete should be of standard mix design using
Type II cement. The design and construction of new concrete structures should conform

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