FLOOD11602

• County: Montezuma
• Community: Montezuma County and Incorporated Areas
• Basin: San Juan/Dolores
• Title: FIRM - Montezuma County and Incorporated Areas - Panel 0800C
• Date: 9/26/2008
• Prepared For: Montezuma County
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

N RS

This map is for use in administering the National Flood Insurance Program. It
does not necessarily identify all areas subject to flooding, particularly from local
drainage sources of small size. The community map repository should be
consulted for possible updated or additional flood hazard information.

obtain more detailed information in areas where Base Flood Elevations
and/or floodways have been determined, users are encouraged to consult
Flood Profiles and Floodway Data and/or Summary of Stillwater Elevations
contained within the Flood Insurance Study (FIS) report that accompanies
FIRM. Users should be aware that BFEs shown on the FIRM represent
rounded whole-foot elevations. These BFEs are intended for flood insurance
purposes only and should not be used as the sole source of flood elevation
information. Accordingly, flood elevation data presented in the FIS report should
utilized in conjunction with the FIRM for purposes of construction and/or
floodplain management.

3r 22' 30.00"

Coastal Base Flood Elevations shown on this map apply only landward of 0.0'
North American Vertical Datum of 1988 (NAVD88). Users of this FIRM should be
aware that coastal flood elevations are also provided in the Summary of Stillwater
Elevations table in the Flood Insurance Study report for this jurisdiction. Elevations
stlOwn in the Summary of Stillwater Elevations table should be used for
construction and/or floodplain management purposes when they are higher than
the elevations shown on this FIRM.

1270000 FT

Boundaries of the floodways were computed at cross sections and interpolated
between cross sections. The floodways were based on hydraulic considerations
with regard to requirements of the National Flood Insurance Program. Floodway
widths and other pertinent floodway data are provided in the Flood Insurance
Study report for this jurisdiction.

Certain areas not in Special Flood Hazard Areas may be protected by flood
control structures. Refer to section 2.4 "Flood Protection Measures" of the Flood
Insurance Study report for information on flood control structures for this
jurisdiction.

The projection used in the preparation of this map was Universal Transverse
Mercator (UTM) zone 12. The horizontal datum was NAD 83, GRS80 spheroid.
Differences in datum, spheroid, projection or UTM zones used in the production of
FIRMs for adjacent jurisdictions may result in slight positional differences in map
features across jurisdiction boundaries. These differences do not affect the
accuracy of this FIRM.

1265000 FT

Flood elevations on this map are referenced to the North American Vertical Datum
of 1988 (NA VD 88). These flood elevations must be compared to structure and
ground elevations referenced to the same vertical datum. For information
regarding conversion between the National Geodetic Vertical Datum of 1929 and
the North American Vertical Datum of 1988, visit the National Geodetic Survey
website at http://www.ngs.noaa.gov/ or contact the National Geodetic Survey at
the following address:

NGS Information Services
NOAA, N/NGS12
National Geodetic Survey
SSMC-2, #9202
1315 East-West Highway
Silver Spring, MD 20910-3282

1260000 FT

To obtain current elevation, description, and/or location information for bench
marks shown on this map, please contact the Information Services Branch of the
National Geodetic Survey at [phone] or visit its website at
http://www . ngs. noaa.gov/.

Base Map information shown on this FIRM was provided in digital format by
Montezuma County. These data are current as of 2006.

This map reflects more detailed and up-to-date stream channel configurations
and floodplain delineations than those shown on the previous FiRM for this
jurisdiction. The floodplains and floodways that were transferred from the previous
FI RM may have been adjusted to conform to these new stream channel
configurations. As a result, the Flood Profiles and Floodway Data tables in the
Flood Insurance Study Report (which contains authoritative hydraulic data) may
reflect stream channel distances that differ from what is shown on this map.

1255000 FT

Corporate limits shown on this map are based on the best data available at the
time of publication. Because changes due to annexations or de-annexations may
have occurred after this map was published, map users should contact appropriate
community officials to verify current corporate limit locations.

Please refer to the separately printed Map Index for an overview map of the
county showing the layout of map panels; community map repository addresses;
and a Listing of Communities table containing National Flood Insurance Program
dates for each community as well as a listing of the panels on which each
community is located.

1250000 FT

Contact FEMA Map Service Center at 1-800-358-9616 for information on
available products associated with this FIRM. Available products may include
previously issued Letters of Map Change, a Flood Insurance Study Report, and/or
digital versions of this map. The FEMA Map Service Center may also be reached
by Fax at 1-800-358-9620 and its website at http://www.msc.fema.gov/.

If you have questions about this map or questions concerning the National Flood
Insurance Program in general, please call 1-877 -FEMA Map (1-877-336-2627) or
visit the FEMA website at http://www.fema.gov/.

Montezuma County Vertical Datum Offset Table

Flooding Source
Chicken Creek
Lost Canyon Creek
Mancos River

Vertical Datum
Offset (ft)
4.0
4.0
4.0

1245000 FT

Example: To convert Chicken Creek elevations to NA VD 88, 4.0 feet were added to the NGVD 29 elevations.

Panel location Map

1240000 FT

1235000 FT

This Digital Flood Insurance Rate Map (DFIRM) was produced through a
Cooperating Technical Partner (CTP) agreement between the State of Colorado
Water Conservation Board (CWCB) and the Federal Emergency Management
Agency (FEMA).

Additional Flood Hazard information and resources are
available from local communities and the Colorado
Water Conservation Board.

1230000 FT

2060000 FT

2065000 FT

2070000 FT

JOINS PANEL 0575
14

-108045' 0.00"

16

15

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Montezuma County
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080285

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2075000 FT

2080000 FT

2085000 FT

2090000 FT -108031' 30.00"
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708000mE

709000mE

710000mE

-108031' 30.00"

JOINS PANEL 1025 I
70500omE 706000mE

707000mE

LEG N

SPECIAL FLOOD HAZARD AREAS (SFHAS) SUBJECT TO
INUNDATION BY THE 10/0 ANNUAL CHANCE FLOOD

The 1% annual chance flood (lOa-year flood), also known as the base flood, is the flood
that has a 1% chance of being equaled or exceeded in any given year. The Special Flood
Hazard Area is the area subject to flooding by the 1% annual chance flood. Areas of
Special Flood Hazard include Zones A, AE, AH, AO, AR, A99, V, and VE. The Base Flood
Elevation is the water-surface elevation of the 1% annual chance flood.

ZONE A
ZONE AE
ZONE AH

No Base Flood Elevations determined.
Base Flood Elevations determined.
Flood depths of 1 to 3 feet (usually areas of ponding); Base Flood
Elevations determined.

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

Special Flood Hazard Area Formerly protected from the 1% annual chance
flood by a flood control system that was subsequently decertified. Zone
AR indicates that the former flood control system is being restored to
provide protection from the 1% annual chance or greater flood.

Area to be protected from 1% annual chance flood by a Federal flood
protection system under construction; no Base Flood Elevations
determined.

Coastal flood zone with velocity hazard (wave action); no Base Flood
Elevations determined.

Coastal flood zone with velocity hazard (wave action); Base Flood
Elevations determined.

ZONE AO

4138000rnN

ZONE AR

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ZONE A99

ZONE V

4137000mN

ZONE VE

FLOODWAY AREAS IN ZONE AE

The floodway is the channel of a stream plus any adjacent floodplain areas that must be
kept free of encroachment so that the 1% annual chance flood can be carried without
substantial increases in flood heights.

OTHER FLOOD AREAS

ZONE X

Areas of 0.2% annual chance flood; areas of 1 % annual chance flood with
average depths of less than 1 foot or with drainage areas less than 1
square mile; and areas protected by levees from 1 % annual chance flood.

4136000mN

OTHER AREAS

ZONE X
ZONE D

Areas determined to be outside the 0.2% annual chance floodplain.
Areas in which flood hazards are undetermined, but possible.

4135000mN

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OTHERWISE PROTECTED AREAS (OPAs)

COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS

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CBRS areas and OPAs are normally located within or adjacent to Special Flood Hazard Areas.
Floodplain boundary

............

Floodway boundary
Zone D Boundary
CBRS and OPA boundary

Boundary dividing Special Flood Hazard Areas of different Base
Flood Elevations, flood depths or flood velocities.

Base Flood Elevation line and value; elevation in feet*

Base Flood Elevation value where uniform within zone;
elevation in feet*

4134000mN

............... 51 3 ...............
(EL 987)

* Referenced to the North American Vertical Datum of 1988 (NAVD 88)

0-----0
@}-------@

Cross section line

Transectline

4133000rnN

9r 01' 30.00"
320 22' 30.00"

Geographic coordinates referenced to the North American
Datum of 1983 (NAD 83)

4275000mN

1000-meter Universal Transverse Mercator grid ticks,
zone 12

6000000 FT

5000-foot ticks: Colorado State Plane coordinate
system, south zone (FIPSZONE 0503), Lambert Conformal
Conic projection

4132000mN

DX5510
X

Bench mark (see explanation in Notes to Users section of
this FIRM panel)

M1.5

River Mile

.

MAP REPOSITORIES
Refer to Map Repositories list on Map Index

4131000mN

EFFECTIVE DATE OF COUNTYWIDE
FLOOD INSURANCE RATE MAP
SEPTEMBER 26, 2008

EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL

For community map revision history prior to countywide mapping, refer to the Community
Map History Table located in the Flood Insurance Study report for this jurisdiction.

To determine if flood insurance is available in this community, contact your insurance
agent or call the National Flood Insurance Program at 1-800-638-6620.

4130000mN

1000

MAP SCALE 1" = 2000'
2000

4000
FEET

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METERS
1200

600

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600

4129000mN

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4128000mN

AND INCORPORATED AREAS

OF 1

MAP INDEX FOR FIRM PANEL LAYOUT)

CONTAINS:

COMMUNITY
MONTEZUMA COUNTY

4127000mN

NUMBER
080285

PANEL
0800

SUFFIX
C

28

4126000mN

Notice to User: The Map Number shown below should be
used when placing map orders: the Community Number
shown above should be used on insurance applications for the
subject community.

33

3r 15' 0.00"

08083C0800C

Federal Emergency