FLOOD10366

• County: Broomfield
• County: Broomfield
• Community: Broomfield
• Title: FIRM - Broomfield - Panel 59F
• Date: 8/18/2004
• Prepared For: Broomfield and CWCB
• Prepared By: FEMA
• Floodplain - Doc Type: Current FEMA Regulatory Floodplain Information

NOTES

TO

USERS

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.

SPECIAL FLOOD HAZARD AREAS SUBJECT TO INUNDATION
BY THE 1 % ANNUAL CHANCE FLOOD EVENT

LEGEND

JOINS PANEL 0060

10500]130"
39058'07.5"

The 1 % annual chance flood (100-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.

105009'22.5"
39058'07.5"

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

ZONE A

ZONE AE

ZONE AH

4424000 M

No base flood elevations determined.

Base flood elevations determined.

ZONE AO

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.

Coastal Base Flood Elevation (BFEs) shown on this map apply only land-
ward of 0.0' North American Vertical Datum (NA VD). Users of this FIRM
should be aware that coastal flood elevations may also be provided in the
Summary of Stillwater Elevations table in the Flood Insurance Study report for
this community. Elevations shown 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.

ZONE AR

Area of special flood hazard formerly protected from the 1 % annual
chance flood event 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 event.

ZONE A99

Area to be protected from 1 % annual chance flood event by a Federal
flood protection system under construction; no base flood elevations
determined.

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.

ZONE V

Coastal flood zone with velocity hazard (wave action); no base flood
elevations determined.

ZONE VE

Coastal flood zone with velocity hazard (wave action); base flood elevations
determined.

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
in this jurisdiction.

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.

The projection used in the preparation of this map is Universal Tranverse
Mercator (UTM) zone 13. The horizontal datum is NAD27, CLARKE 1866
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 the FIRM.

ZONE X

OTHER FLOOD AREAS

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.

OTHER AREAS

Flood elevations on this map are referenced to the North American Vertical
Datum of 1988. 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 www.ngs.noaa.gov or contact the National Geodetic Survey
at the following address:

ZONE X
ZONE D

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

~~~
~ "" ~ ",""1

COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS

OTHERWISE PROTECTED AREAS (OPAs)

Spatial Reference System Division
National Geodetic Survey, NOAA
Silver Spring Metro Center
1315 East-West Highway
Silver Spring, Maryland 20910
[phone]

4423000 M

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

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 their website at
www . n 9-SillQ.QShg.o~

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

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Base map information shown on this FIRM was provided in digital format by
the Department of Community Development Geographic Information
Systems (GIS) Division. One DesCombes Drive Broomfield, CO 80020.

-----513

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 velocities.

(EL 987)

Base Flood Elevation line and value; elevation in feet*

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.

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

*Referenced to the North American Vertical Datum of 1988

@-----0
@------@

Please refer to the separately printed Map Index for an overview map showing
the layout of map panels for this jurisdiction.

9]007'30", 32022'30"

Cross Section Line

Transect Line

Geographic coordinates referenced to the North American
Datum of 1 927 (NAD 27)

4276000M

1000-meter Universal Transverse Mercator grid values, zone 13

5000-foot grid ticks

MAP REPOSITORY

City Hall, Engineering Department, One DesCombes Drive, Broomfield, Colorado, 80020.
(Maps available for reference only, not for distribution.)
INITIAL IDENTIFICATION
SEPTEMBER 7,1973
FLOOD HAZARD BOUNDARY MAP REVISIONS
None
FLOOD INSURANCE RATE MAP EFFECTIVE
DECEMBER31,1974
FLOOD INSURANCE RATE MAP REVISIONS
DECEMBER 31, 1974 AUGUST 22, 1975 DECEMBER 14, 1982
AUGUST 16, 1988 SEPTEMBER 28, 1990 SEPTEMBER 30, 1997
August 18, 2004: to update corporate limits, to change base flood elevations,
to add base flood elevations, to add special flood hazard areas, to update map
format, to add roads and road names, to reflect updated topographic information, to
incorporate previously issued letters of map revision.

600000 FT

An accompanying Flood Insurance Study report, Letters of Map Revision or
Letters of Map Amendment revising portions of this panel, and digital versions
of this PANEL may be available. Contact the FEMA Map Service Center at
the following phone numbers and Internet address for infomation on all related
products available from FEMA;

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

This map reflects more detailed and up-to-date stream channel configurations
than those shown on the previous FIRM for this jurisdiction. The floodplains
and floodways that were transferred from the previous FIRM 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 may reflect stream channel distances that differ from what is
shown on this map.

ZONE X

4422000 M

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

River Mile

To determine if flood insurance is available in this community, contact your insurance
agent or call the National Flood Insurance Program at [phone].

250 0
, f-i f-i ,

I----l I----l I----l

150 0

NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED
WITHIN TOWNSHIP 1 SOUTH AND RANGE 69 WEST.

39Q56'15"
105009'22.5"

FLOODING EFFECTS FROM
ROCK CREEK

ZONE X
28

4421000 M

CORPORATE LIMITS

DENVER-BOULDER
TURNPIKE

ZONE X

29

ZONE X
ZONE AE
WEST FLATIRON
CIRCLE

ZONE AE

487000 M

JOINS PANEL 0067

4B9000M ZONE X
1 % ANNUAL CHANCE FLOOD
DISCHARGE CONTAINED IN CULVERT

FLOODING EFFECTS
FROM ROCK CREEK

.

MAP SCALE 1" 500'

500
I

1000
'FEET

I METERS
300

150

PANEL 0059F

I

FIRM
FLOOD INSURANCE RATE MAP

CITY AND COUNTY OF
BROOMFIELD,
COLORADO

PANEL 59 OF 125

(SEE MAP INDEX FOR FIRM PANEL LAYOUT)

CONTAINS'

COMMUNITY

NUMBER PANEL SUFFIX

CITY AND COUNTY OF
BROOMFIELD

0059

F

085073

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.

MAP NUMBER
0850730059F

MAP REVISED:
AUGUST 18, 2004

Federal Emergency Management Agency