FLOOD09981

• County: Gunnison
• Basin: Gunnison
• Title: U.S.G.S. Floodprone Quadrangle Maps - Somerset Quadrangle
• Date: 1/1/1954
• Prepared By: USGS
• Floodplain - Doc Type: Drawing/Map

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MAP OF

FLOOD-PRONE AREAS

UNITED STATES
DEPARTMENT OF THE INTERIOR

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38"52'30"
107"22'30"

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Approximate boundaries of !I00d~prone areas are shown on this map. There is, on the average,
about 1 chance in 100 that the designated areas will be inundated in any year. This information is
important to public agencies and private citizens concernt':'d with future land developments.
The flood-prone areaS have been delineated through use of readily available information 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 possible effects of existing or proposed
flood control structures except where those effects could be evaluated. Flood areas have been iden-
tified for: (1) urban areas ~here the upstream 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 semiarid regions where the upstream drainage basin exeeeds 250 square miles, and (4) smaller
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 information may be required for other pUrposes such as structural designs. eco-
nomic studies, or formulation of land-use regulations. Such detailed information may be obtained
from the U.S. Geological Survey, other Federal agencies, or State,local, and private agencies.

SCALE 1.24000
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EXPLANATION

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

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CONTOUR INTERVAL 40 FEET
DATUM IS MEAN SEA LEVEL

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SOMERSET. COLO.
NW /4 MT CUNNlSON 15' QUADRANGLE
N3852.5-W10722 5/7 5
Base by U,S. GeoloBlcal Survey
1964

QU....OR....NGL[ LQC,.t,TION

PREPARED BY U.S. GEOLOGICAL SURVEY
1978

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