FLOOD03756

• County: Summit
• Community: Silverthorne
• Basin: Colorado Mainstem
• Title: FIRM - Silverthorne - Panel 18B
• Date: 8/9/2001
• Prepared For: Silverthorne
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

106003'4511
39039'2311

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2

3

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ZONE

ZONE AE

ZONE
X

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39037'3011
106003'4511

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B

LEGEN

To obtain detailed information in areas where
Elevations (BFEs)and lor have been
to consult the Profiles and
within the Insurance
this FiRM, Users should be aware
rounded whole-foot elevations and
reflect the flood eievation data presented in
on the FIRM are intended for flood insurance
and should not be used as the sole source of
flood elevation data
with the
management.

nOT
shown
purposes
elevation
in the FIS should be utilized
purposes of construction and lor

ERM elevations listed on
to establish vertical control
boundaries
ERM
To obtain
Geodetic (NGS;
the Information Services
or visit their vvebsite
seek verification of non,
elevations for

this map were obtained and/or developed
for determination of flood elevations and
on this map, Users should be aware
have changed the publication
elevaton Information on National
shown on this map, contact
Branch of the NGS at 713-3242,
users should
when
or floodplain management

purposes.

Coastal shown on this apply
NAVD Users of this FiRM aware
elevations are also provided Summary of Stillwater
table in the Flood Insurance community,
Elevations shown in the Summary Elevations table
should be used for construction, and lor flOOdplain management
when they are higher than the elevations shown on this

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.

E

F

LEGEN

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

ZONE AE

Base flood elevations determined.

JOINS PANEL

106001'5311
40037'3011

1 to 3
base

ZONE AH

ZONE AO

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

ZONE A99

ZONE V

Coastal flood with
action); no base flood

hazard
determined.

ZONE VE

Coastal flood with
action); base flood

hazard (wave
determined.

FLOODWAY AREAS IN ZONE AE

OTHER FLOOD AREAS

ZONE X Areas of SOO-year
flood with
1 foot or with
'I square mile; and
le\'ees from WO-vear

areas than
areas protected by
flood.

OTHER AREAS
ZONE X determined to be outside
floodplain.

ZONE D

Areas in which flood hazards
undetermined.

UNDEVELOPED COASTAL BARRIERS

~~~

K~~

Identified
1983
Coastal barrier areas are
Flood Hazard Areas

Identified Otherwise
1990 Protected Areas
normally located within or adjacent to Special

Flood Boundary

Floodway Boundary

Zone D Boundary

Boundary
Hazard
Dividing
Coastal
Within
Zones

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

~513~

Flood Elevation Line;
Elevation in Feet. See Map Index
for Elevation Datum.

Cross Section Line

Base Flood Elevation in
Where Uniform Within
See Map Index for Elevation Datum.

Elevation Reference Mark

987)

RM7X
. M2

River Mile

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

97007'3011, 32022'3011

NOTES

This map is for use in administering the National Flood Insurance
it does not necessarily identify all areas subject to flooding,
local drainage sources of small size, or all planimetric
Special Flood Hazard Areas. The community map
consulted for more detailed data on BFE's, and for any on
floodway delineations, prior to use of this map for property purchase or
construction purposes.

Areas of Special Flood Hazard (100-year flood) include Zones A, AE,
A30, AH, AO, A99, V, VE and V1-V30.

Certain areas not in Special Flood Hazard Areas may be protected
flood control structures.

Boundaries of the floodways computed at cross sections
interpolated between cross sections. The floodways were based
considerations with regard to requirements of the Federal
Management Agency,

Floodway vvidths in some areas may be too narrow to show to scale. Refer
to Floodway Data Table where floodway vvidth is shown at 11.20 inch,

Corporate
should contact
limits have

of

date of this
to determine
issuance of

user
corporate
this map.

shown are

community
subsequent to

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boundaries of Coastal
Otherwise Protected Areas established
Improvement Act of 1990 (PL 101--591)

This map may
Resource
under the

source

separately printed

For adjoining map panels and base
Map Index.

iNITIAL IDENTIFICATiON:

FLOOD HAZARD BOUf\JDARY MAP REVISIONS

FLOOD INSURANCE RATE MAP EFFECTIVE:
MAY 1,1980

FLOOD INSURANCE RATE MAP REVISIONS:

revised corporate limits, to
elevations, flood hazard areas, to
format, to add roads names, to reflect updated
information, and to change floodway.

To determine flood insurance is available, contact an insurance agent or
call the National Flood insurance Program at (800) 638.-6620.

.

APPROXIMATE SCALE IN FEET
500 0

.

NATIONAL flOOD INSURANCE PROGRAM

COLORADO
SUMMIT COUNTY

0802010018 B

JOINS PANEL 0050

39037'3011
106001'5311

Federal Emergency Management Agency