FLOOD02529

• County: Summit
• Community: Silverthorne
• Basin: Colorado Mainstem
• Title: FIRM - Silverthorne - Panel 12B
• Date: 8/9/2001
• Prepared For: Silverthorne
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

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106005'38/1
39041'15"

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To

obtain more detailed information in areas where Base Flood
(BFEs)and have been determined. users are
to consult the Profiles and Data tables
within Flood Insurance
this FIRM. Users should be aware
rounded whole-foot elevations and
reflect the flood elevation data presented the
on the FIRM 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 lor

to

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

shown on this
of this FIRM
also provided in
table In the Flood Insurance
Elevations shown In the Summary
shoulo be used for oonstruotion, and lor 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 EFEs 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,

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JOINS PANEL 0014

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ZONE X

ELEVATION REFERENCE MARKS
REFERENCE ELEVATION
MARK (FEET NAVD) DESCRIPTION OF LOCATION

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v

3. 9 mil e s nor t h a Ion g s tat e Hwy 9 from
junct ion of U. S. Highway 6 and U. $, Hwy 9,
168 ft. West of and old T road, leading west
from Hwy 9, in a pasture. A disk stamp
l298 1951 sets in the top of a large
boulder about 2 ft. above ground,

RM2

8644.86

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

ZONE AE

Sase flood elevations determined.

106003'45"
39041'15/1

Flood
of

of 1 to 3
base

ZONE AH

ZONE AO Flood depths of1 to 3 feet (usually sheet
flow on terrainl; average
determined. areas of alluvial fan
velocities also determined.

ZONE A99 be protected from lOa-year flood by
Federal flood system under
construction; no elevations determined.

ZONE V

Coastal flood with
action); no base flood

hazard (wave
determined.

ZONE VE

Coastal flood with
action); flood

hazard (wave
determined.

FLOODWAY AREAS IN ZONE AE

OTHER FLOOD AREAS

ZONE X of 500-year flood; areas of
flood with. depths of less
.1 foot or with areas less than
1 square mile; and areas protected by
levees from 100--vear flood.

OTHER AREAS

ZONE X ;I..reas determined to be outside 500-vear
floodplain.

ZONE D

Areas in which flood hazards
undetermined.

UNDEVELOPED COASTAL BARRIERS

~~~

Identified Identified Otherwise
1983 1990 Protected Areas
Coastal barrier areas are normally located within or adjacent to Special
Flood Hazard Areas.

Flood Boundary

Floodway Boundary

Zone

Boundary

Boundary
Hazard
Dividing
Coastal
Within
Zones

Sase

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

Flood

Elevation
See Map Index

~513~

in
for Elevation Datum.

987)

Cross Section

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

Reference Mark

RM7X
. M2

River Mile

97007'30". 32022'30/1

Horizontal Coordinates Based on North
American Datum of 1927 (NAD 27)
Projection.

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 ali planimetric
Special Hazard Areas. The community map
consulted for more detailed data on BFE's, and for any on
delineations, prior to use of this map for property purchase or
purposes.

Areas of Special Flood Hazard (100-year flood) include
A30, AH, AO, A99, V, and Vl-V30.

A

Certain areas not in Special Flood Hazard Ar8bs may be protected
flood control structures.

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

widths in some areas may be too narrow to show to scale. Refer
Data Table where floodway width is shown at 1120 inch.

Corporate are current of the date of this
should contact appropriate community officials to determine
limits have subsequent to Issuance of

The user
corporate
this map.

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approximate boundaries of Coastal Barrier
and lor Otherwise Protected Areas established
Barrier Improvement 1990 101-591L

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and base map source

separately printed

For adjoining map
Map

601 Center
Silverthorne. Colorado 80498
for reference only, distribution)
INITIAL IDENTIFICATION:
JULY

FLOOD HAZARD BOUNDARY MAP REVISIONS:
FLOOD INSURANCE RATE MAP EFFECTIVE:
MAY 1.1980
FLOOD INSURANCE RATE MAP REVISIONS:

revised August
elevations, to
format, to add roads
information, and to change floodway.

limits, to
areas, to
updated

determine flood insurance available, contact an insurance agent or
cali the National Flood Insurance Program at 638-6620.

.

APPROXIMATE SCALE IN FEET
500 0

. NATIONAL FLOOD INSURANCE PROGRAM

TOWN OF
SILVERTHORNE,
COLORADO
SUMMIT COUNTY

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39039'23"
106003'45/1

Federal Emergency Management Agency