FLOOD05143

• County: Summit
• Community: Summit County and Unincorporated Areas
• Basin: Colorado Mainstem
• Title: FIRM - Summit County and Unincorporated Areas - Panel 107C
• Date: 8/9/2001
• Prepared For: Summit County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

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ZONE X

TOWN OF SILVERTHORNE
AREA NOT iNCLUDED

ZONE AE-

JOINS PANEL 0095

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18

ZONE X

19

ARAPAHO NATIONAL FOREST

ZONE X

25

NOTE TO USER: THE BASE {100-YEAR} FLOOD ELEVATIONS (BFEs)
FOR FLOODING SOURCES IN THE TOWN OF SILVERTHORNE,
COLORADO, ARE REFERENCED TO THE NORTH AMERICAN VERTICAL
DATUM OF 1988, THE BFEs FOR FLOODING SOURCES IN SUMMIT
COUNTY, COLORADO, ARE REFERENCED TO THE NATIONAL GEO-
DETiC VERTICAL DATUM OF 1929. THE USE OF TWO DiFFERENT
DATUMS CREATES MISMATCHES IN BFEs AT TIE-IN LOCATIONS
BETWEEN AREAS SHOWN ON BOTH FIRMS.

Creek

NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED WITHIN
TOWNSHIP 4 SOUTH, RANGE 77 WEST AND TOWNSHIP 4
RANGE 78 WEST,

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LEND

obtain more detailed information in areas INhere Base Flood
Elevations (BFEs)and /01' have been
to consult the Profiles and
within the Flood Insurance
this FIRM. Users should be aware
rounded whole-foot elevations and therefore
reflect the flood elevation data presented in the FIS.
on the FIRM are Intended for flood insurance
and should not be used as the sole source of
flood elevation data
with the
management.

In the FIS should be utilized
purposes of construction and /01'

elevations listed on this map were obtained andlor developed
to establish vertical control for determination of flood elevations and
boundaries on this map. should be aware
ERM have changed since the publication
elevaton information on National
shown on this map, oontact
Branch of the NGS 713--3242.
should
when
management

that
of this
Geodetic (NGS)
Information Services
or visit their webslte at
seek verification of non--NGS monument
using these elevations for construction or floodplain
purposes.

Coastal shown on this landward ot 0.0'
NGVD. Users of this FIRM coastal flood
elevations also provided in the Summary of Stillwater Elevations
table in the Flood Insurance Study for this
Elevations shown the Summary of Eievations
should be used for construction, and /01' floodplain management
when they are higher than the elevations shown on this

for

17

20

29

32

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SPECIAL FLOOD HAZARD AREAS INUNDATED
BY 100-YEAR FLOOD
ZONE A No base flood elevations determined.

ZONE AE

Base flood elevations determined.

ZONE AH

Flood
of

of! to
base

ZONE AO

Flood depths of 1 to 3 (usually sheet
flow on terrain); average
determined. of alluvial fan
velocities also determined.

ZONE A99

To be
Federal
construction
determined.

Coastal flood with
action); no base flood

hazard (wave
determined,

from '100-year flood by
protection under
no base elevations

ZONE V

ZONE VE

Coastal flood with
action); base flood

hazard (wave
detennined.

FLOODWAY AREAS IN ZONE AE

OTHER FLOOD AREAS

ZONE X l\reas of SOO-year
flood with
.! foot or with
1 square mile; and
levees from 100--year

flood; areas of
depths of
areas less than
protected

flood.

OTHER AREAS

ZONE X ;\reas determined to be outside 500--;;ear
floodplain.

ZONE D

Areas in which flood hazards are
undetermined.

UNDEVELOPED COASTAL BARRIERS

~~~

IdC'ntified Identified Otherwise
!983 1990 Protected Areas
Coastal barrier areas are normally located within or adjacent to Special
Flood Hazard Areas.

Floodplain Boundary

Floodway Boundary

Zone D Boundary

Boundary
Hazard
Dividing
Coastal
Within
Zones,

Base Flood Elevation
Elevation in Feet. See Map Index
for Elevation Datum.

Dividing Special Flood
Zones. and Boundary
Areas of Different
Base Flood Elevations
Special Flood Hazard

~513~

(El 987)

Cross Section L.ine

Base Flood Elevation in
VVhere Uniform Within
See Map Index for Elevation Datum

Elevation Reference Mark

RM7X
.. M2

River Mile

Horizontal Coordinates Based on North
American Datum of 1927 (NAD
Projection,

97007'30", 32022'30"

NOTES

This map is for use in administering the National Flood Insurance
it does not necessarily identify all areas subject to flooding,
local sources of small size, or all
Special Hazard Areas, The
consulted for more detailed data on
floodway delineations, prior to use of
construction purposes,

on
purchase or

Areas of Special Flood Hazard OOO-year flood) include Zones A AE, Al-
A30, AH, AO, A99, V, VE and V1-V30.

Certain areas not in Speoial Flood Hazard Areas may be protected by
flood control structures,

Boundaries of the floodways were computed at cross sections and
interpolated between cross sections. The floodways vvere based on
hydraulic considerations with regard to requirements of the Federal
Emergency Management Agency.

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Floodway widths in some areas may be too narrow to show to scale. Refer
to Floodway floodway width is shown 1120 inch.

of the
officials
to the

of this map.
determine
issuance this

Corporate limits shovm are current
should contact appropriate
limits have changed subsequent

map.

boundaries of
and Otherwise Protected Areas established
Improvement Act of 1990 (PL. 101 591)

adjoining map
lVIap Index

and base map source

printed

MAP REPOSITORY
Summit County
0037
Frisco, CO
(Maps availabie for
INITIAL
SEPTEMBER 13, 1977
FLOOD HAZARD BOUNDARY MAP REVISIONS:
FLOOD INSURANCE RATE MAP EFFECTIVE:
DECEMBER 16, 1980
FLOOD INSURANCE RATE MAP REVISIONS:

Map revised August 9, corporate limits. to change
flood elevations, to flood harzard areas. to update map
format, to add roads road names, to reflect updated topographic
information. and to change floodway.

To determine flood insurance is available, contact an insurance agent or
call the National Flood Insurance Program at [phone].

.

APPROXIMATE SCALE IN FEET
500 0 500
I---i j-----i I---i I

__ NATIONAL FlOOO INSURANCE PROGRAM

I
FLOOD INSURANCE

MAP

SUMMIT COUNTY,
COLORADO
(UNINCORPORATED AREAS)

MAP

Federal Emergency Management Agency