Board Meeting 10/01/1987

• Board Meeting Date: 10/1/1987
• Description: CWCB Meeting
• Board Meetings - Doc Type: Meeting

approximate floodplain boundaries have
been developed based on an assumed or ~
representative lOO-year flood depth, the
assumed depth shall be so stated on the
maps.

b. Geomorohic Features Methods. Approxi-
mate lOO-year flood boundaries may be
determined from a study of geomorphic
features on the best available topographic
map;

c. Historic Flood Method. Historical flood
information may be used directly if the
peak discharge can be shown to approximate
a lOO-year flood and is applicable to the
present conditions. Historical flood
information may be available in government
reports on maps that have been prepared
for ma jar floods. from high-water marks.
from gaging station data, or from
miscellaneous discharge measurements made
in the study area.

D. Published Report and Maps

1.

Reoorts. All
information which
for designation
entitled. dated.
document.

approximate
is presented to
and approval
and bound in an

floodplain
the Board
sha 11 be
individual

.

2.

Published MaD Scale.
area map scale shall
feet or such map scale

The published flooded
be 1 inch equals 2000
showing greater detail.

E. Qualifications. All approximate floodplain
information shall be developed by a qualified
hydrologist or hYdraulic engineer under the direct
supervision of a professional engineer registered
in the State of Colorado, or by an employee of a
state or federal government agency that has
executed a memorandum of understanding or other
written agreement with the Board based on a
written statement which demonstrates to the
satisfaction of the Board their equivalent
qualifications to perform such work in Colorado.

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