FLOOD01575

• County: El Paso
• Title: U.S.G.S. Floodprone Quadrangle Maps - Cheyenne Mountain Quadrangle
• Date: 1/1/1969
• Prepared By: USGS
• Floodplain - Doc Type: Drawing/Map

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0' I Approximate boundaries ot J.lOod-prone" areas are shown on this map. There is, on the
v'f average, about 1 chance in 100 that the designated areas will be inundated in any year.
~.o(,t;:..r1 This information is important to public agencies and private citizens concerned with future
q' \,\ land developments.
./' b' Tbe flood4prone areas have been delineated through use of readily available informa-
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\~o tiOD on past floods rather than from detailed field surveys and inspections. In general,
the delineated areas are for natural conditions and do not take into consideration the pos-
sible effects of existing or proposed flood control structures except where those effects
could be evaluated. Flood areas have been identified for: (1) urban areas where the up-
stream drainage basin exceeds' 25 square miles. (2) rural areas in humid regions where the
upstream drainage basin exceeds 100 square miles, (3) rural areas in sem,larid regions where
the upstream drainage basin exceeds 250 square miles, and (4) small.!r drainage basins.
depending on topography and potential use of the flood plains.
The 89th Congress. in House Document 465, recommended the preparation of flood-prone
area maps to assist in minimizing flood losses by quickly identifying the areas of potential
flood hazards. More detailed 'flood infor'mation may be required for other purposes such
as structural designs, economic studies., or formulation of land.use regulations. Such de.
tailed information may be obtained from the U.S. Geological ~urvey, other Federal agencies,
or State, local. and private agencies.

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COLORAOO~EL PASO CO.
7.5 MINUTE SERIES (TOPOGRAPHIC)
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MAP OF FLOOD-PRONE AREAS

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EXPLANATION

~~(,..
O($'.... ,;..,;..
....... ~IS'
",,-'

1000

'0
.................... ..........

1000

2000

3000

'000

5000

6000

7000 FEET
,

Flood boundaries were estimated from:
Regional stage-frequency relations.

1
--- ---

5
-

o

1 KILOMETER

--- ---

EJ

CHEYENNE MOUNTAIN, COLO.
NE/4 MOUNT BIG CHIEF 15" QUADRANGLE
N3837.5 - W10445/7 5
Base by U.S. Geological Survey
1961
PHOTOREVISEO 1969

CONTOUR INTERVAL 20 FEET
DATUM IS MEAN SEA LEVEL

Prepared by the U.S. Department of the Interior,
Geological Survey, in cooperation with the
U.S. Department of Housing and Urban Development.
Federal Insurance Admini$tration.

QUADRANGLE LOCATION

1973