FLOOD09982

• County: Garfield
• Community: Battlement Mesa
• Stream Name: Colorado River
• Basin: Colorado Mainstem
• Title: Battlement Mesa Storm Drainage and Floodplain Study
• Date: 3/1/1975
• Prepared For: CWCB
• Prepared By: Frasier & Gingery, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Page Ten
Battlement Hese. Development Storm Drainage and Flood Plain Study

and drainageway locations will become an integral part of the
future plattinc process.

The requirement that excessive saturation of the areas
adjacent to the escarpments be minimized will be handled
through design of adequate storm drainage facilities
throughout the site.

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The extreme erosion tendency of the existing channels,
or of any unlined open channel, will be handled through the
utilization of velocity control structures in all open
unlined channels. Velocities in natural channels will be
controlled utilizing check dams of natural rock or gabions
(rock-filled wire baskets). Velocities will be controlled in
man-made channels through use of concrete or gabion drop
structures. It may be necessary, or more economical, to
utilize riprap or other channel lining to prevent erosion due
to high velocity flow \.,hen velocity control structures are
impractical.

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The erosion characteristics of the walls of the natural
channels will be handled by collecting all surface runoff to
specific rundown locations where either lined open chutes or
buried conduit will be installed to the channel bottom.

1. Runoff onto lands not owned by Battlement Mesa,
Inc., will be held to historic limits.

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Hherever potential mud flow. areas cross roads, a very
definite low pcint will be developed in the roadway to allow
overflow of the roadway cross section to occur if the conduit
beneath the road is plugged. Dwelling units will be situated

such tha t there ~Ji 11 be no damage due to the overf low of
mud across the road surface during those extreme events when
a mud flow might occur. In the area of the sewage treatment
plant and equestrian center, a protective berm will be
constructed to ~inimize the possibility of mud flow damage
to either the plant or equestrian center and to direct the
flood discharges from I10nument Gulch to the Colorado River.

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A series of detention ponds are indicated throughout the
plan which will serve several functions:

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2. Water quality of surface runoff should be
significantly increased after it passes through
detention ponds as a significiant amount of the

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