PROJ00047

• Contract/PO #: C153490
• Contractor Name: Union Avenue Boat Chute 1987
• Contract Type: Miscellaneous
• Water District: 0
• County: Arapahoe
• Loan Projects - Doc Type: Feasibility Study

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SECTION I
OBJECTIVES

A uniform and compatible basis for development of design criteria for the
Union Avenue boat by-pass structure is necessary. Therefore, a list of
standards against which various alternatives for the boat chute structure
can be objectively measured have been defined below.

USER SAFETY
The Union Avenue by-pass structure must reduce existing water hazards to
river boaters. The facility will include the boat chute, boat landings,
and related portage trails. The design will be based on the assumption
that the typical user has attained a basic skill level to navigate the
chute or use the portage facilities provided. The typical user entering
the area on the river will be warned by signage of the approaching dam and
chute. and will be directed to scout the approach and chute before
navigating it.

WATER AVAILABILITY AND WATER RIGHTS

The planning and design of the boat chute must consider the river
hydrological character> and availability of river flow. For instance, if it
was determined that river flow was not adequate to support a particular
type boat chute, that boat chute should not be selected. Consideration of
future condition flow availability is also important to feasibility.

The sizing and layout of the boat chute will establish a deSign range of
flow rates. These rates should be optimized with the flow-duration
analyses which indicates how many days per year certain flow rates can be
expected.

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