FLOOD02589

• County: Summit
• Community: Silverthorne
• Basin: Colorado Mainstem
• Title: FIRM - Silverthorne - Panel 13B
• Date: 8/9/2001
• Prepared For: Silverthorne
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

B

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JOINS

1

2

3

5

6

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JOINS PANEL 0050

L EN

more information areas where Base Flood
have been determined, users are
Profiles and Data tables
Insurance that
this FIRM. Users should be aware on
rounded v\'hole.-foot elevations 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 for
management.

obtained ancVor developed
for determination of flood elevations 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 at 713--3242,
users should
when
management

that
of this
Geodetic
the Information
or visit their website at
seek verification of non-.NGS monument
using these elevations for construction or flood pia in
purposes.

Coastal BFE's shown on this landward of 0.0'
NAVD. Users of this FIRM coastal flood
elevations are also provided in the Summary of Stillwater Elevations
table in the Flood Insurance Study for this
Elevations shown in the Summary of Elevations
should be used for construction, and /01' 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.

106005/3811
39039/23/1

c
~
=1
(J)

ZONE X

........

Willow Creek

ZONE AH

Flood depths of 1 to 3
of pondingl; base
determined.

ZONE AO

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

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

ZONE V Coastal flood with hazard ~\vave
action): no base flood determined.
ZONE VE Coastal flood with hazard (wave
action); base flood determined.

FLOODWAY AREAS IN ZONE AE

OTHER FLOOD AREAS

ZONE X ;\reas SOO--year
flood with
1 foot or with
-I square mile; and areas
from H)O--year flood.

less than
protected by

OTHER AREAS

ZONE X ;\reas determined to be outside SOO-year
floodplain,

ZONE D

i\reas in which flood hazards
undetermined.

UNDEVELOPED COASTAL BARRIERS

ZONE AE
(El 8869)

~~~

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

Flood Boundary

Floodway Boundary

D Boundary

Boundary
Hazard
Dividing
Coastal
Within
Zones.

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

~513~

Elevation Line;
See Map Index

Base Flood
Elevation in
for Elevation Datum.

Cross Section

987)

Flood Elevation
Uniform Within
Map Index for Elevation

Reference Mark

Zone.
Datum.

RM7X
. M2

River Mile

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

9700T30/l, 32022/30/1

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 outside
Special Flood Hazard Areas. The cornmunity repository should be
consulted for more detailed data on BFE's, and any information on
floodway delineations, prior to use of this map for property purchase or
construction purposes.

Areas of
A30, AH,

Flood Hazard (100-year floodl include Zones A. AE,
A99, V, VE and Vl-V30.

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

Boundaries of the floodways were computed at cross sections
interpolated between cross sections. The f100dways were based
hydraulic considerations with regard to requirements of the Federal
Emergency Management Agency.

Floodway widths in some areas
to Floodway Data Table where

be too narrow to show to scale. Refer
width is shown at 11.20 inch.

Corporate limits
should contact
limits have

this
determine
issuance of

The user
corporate
this map.

.....J
W
Z
<(
a..
if!
Z
o
-,

map
Resource
under the

boundaries of Coastal Barrier
Protected Areas established
Act of 1990 (PL 1(1591)

For adjoining map panels and
Map Index.

source see separately printed

(Maps

for distribution)
INITIAL IDENTIFICATION;
25, 1975
FLOOD HAZARD BOUNDARY MAP REVISIONS:

FLOOD INSURANCE RATE MAP EFFECTIVE;
MAY 1,1980

FLOOD INSURANCE

MAP REVISIONS:

revised
eievations,
to add roads names
information, and to change floodway. '

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

.

APPROXIMATE SCALE IN FEET
500 0 500

I-----!

!----l

!----l

. NATIONAL flOOD INSURANCE PROGRAM

OF

INDEX FOR PANELS NOT PRINTED)

39037'30/1
106005/3811

MAP
AUGUST 9,

Federal

Management Agency