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<br />NOTES TO USERS
<br />
<br />This map is for use in administering the National Flood Insurance Program. It does
<br />not necessarily identify all areas subject to flooding, particularly from local drainage
<br />sources of small size. The community map repository should be consulted for
<br />possible updated or additional flood hazard information.
<br />
<br />3065000 FT
<br />JOINS PANEL 1150
<br />
<br />1050 16' 52.5"
<br />40026' 15"
<br />
<br />
<br />To obtain more detailed information in areas where Base Flood Elevations (BFEs)
<br />and/or floodways have been determined, users are encouraged to consult the Flood
<br />Profiles and Floodway Data and/or Summary of Stillwater Elevations tables contained
<br />within the Flood Insurance Study (FIS) Report that accompanies this FIRM. Users
<br />should be aware that BFEs shown on the FIRM represent rounded whole-foot
<br />elevations. These BFEs are intended for flood insurance rating purposes only and
<br />should not be used as the sole source of flood elevation information. Accordingly,
<br />flood elevation data presented in the FIS Report should be utilized in conjunction with
<br />the FIRM for purposes of construction and/or floodplain management.
<br />
<br />31
<br />
<br />r.6N.
<br />r.5N.
<br />
<br />Boundaries of the floodways were computed at cross sections and interpolated
<br />between cross sections. The f100dways were based on hydraulic considerations with
<br />regard to requirements of the National Flood Insurance Program. Floodway widths
<br />and other pertinent floodway data are provided in the Floodway Data table shown on
<br />this FIRM.
<br />
<br />ARAP AHO-ROOSEVEL T
<br />NA TIONAL FOREST
<br />
<br />Certain areas not in Special Flood Hazard Areas may be protected by flood control
<br />structures. Refer to Section 2.4 "Flood Protection Measures" of the Flood Insurance
<br />Study Report for information on flood control structures for this jurisdiction.
<br />
<br />ZONE X
<br />
<br />FEMA recommends that a Flood Insurance Policy be purchased for structures in
<br />areas where levees are shown as providing protection from the 1 % annual chance
<br />flood. Flooding is not covered by standard property/fire/dwelling insurance policies nor
<br />is it covered by Homeowners Insurance, Renters Insurance, Condominium Owners
<br />Insurance, or Commercial Property Insurance. Contact your insurance agent and local
<br />floodplain administrator for further information.
<br />
<br />1400000 FT
<br />
<br />+
<br />
<br />Visit htto:/Iwww.fema.90v/pdf/fhm/frm gsah.pdf for information on levees and the risk
<br />of flooding in areas shown as being protected by levees.
<br />
<br />The projection used in the preparation of this map was State Plane Colorado North
<br />(feet). The horizontal datum was NAD 83, GRS80 spheroid. Differences in datum,
<br />spheroid, projection or UTM zones used in the production of FIRMs for adjacent
<br />jurisdictions may result in slight positional differences in map features across jurisdiction
<br />boundaries. These differences do not affect the accuracy of this FIRM.
<br />
<br />Flood elevations on this map are referenced to the North American Vertical Datum of
<br />1988. These flood elevations must be compared to structure and ground elevations
<br />referenced to the same vertical datum. For information regarding conversion
<br />between the National Geodetic Vertical Datum of 1929 and the North American
<br />Vertical Datum of 1988, visit the National Geodetic Survey website at
<br />http://www.ngs.noaa.gov or contact the National Geodetic Survey at the following
<br />address:
<br />
<br />6
<br />
<br />Spatial Reference System Division
<br />National Geodetic Survey, NOAA
<br />Silver Spring Metro Center
<br />1315 East-West Highway
<br />Silver Spring, Maryland 20910
<br />(301) 713-3191
<br />
<br />To obtain current elevation, description, and/or location information for bench marks
<br />shown on this map, please contact the Information Services Branch of the National
<br />Geodetic Survey at (301) 713- 3242, or visit its website at http://www.ngs.noaa.gov.
<br />
<br />Base map information shown on this FIRM was provided by the Larimer County GIS
<br />and Mapping Department. Additional input was provided by the City of Fort Collins
<br />Geographic Information Service Division. These data are current as of 2005.
<br />
<br />The profile baselines depicted on this map represent the hydraulic modeling baselines
<br />that match the flood profiles in the Flood Insurance Study report. As a result of improved
<br />topographic data, the profile baseline, in some cases, may deviate significantly from
<br />the channel centerline or appear outside the Special Flood Hazard Area.
<br />
<br />ZONE X
<br />
<br />Corporate limits shown on this map are based on the best data available at the time
<br />of publication. Because changes due to annexations or de-annexations may have
<br />occurred after this map was published, map users should contact appropriate
<br />community officials to verify current corporate limit locations.
<br />
<br />~
<br />~
<br />~
<br />~
<br />...J
<br />W
<br />Z
<br />~
<br />(J)
<br />z
<br />5
<br />....,
<br />
<br />Please refer to the separately printed Map Index for an overview map of the
<br />county showing the layout of map panels; community map repository addresses;
<br />and a Listing of Communities table containing National Flood Insurance Program
<br />dates for each community as well as a listing of the panels on which each community
<br />is located.
<br />
<br />Contact the FEMA Map Service Center at 1-800-358-9616 for information
<br />on available products associated with this FI RM. Available products may include
<br />previously issued Letters of Map Change, a Flood Insurance Study Report, and/or
<br />digital versions of this map. The FEMA Map Service Center may also be reached by
<br />Fax at 1-800-358-9620 and its website at http://www.msc.fema.gov.
<br />
<br />ZONE X
<br />
<br />Unnamed
<br />
<br />If you have questions about this map or questions concerning the National Flood
<br />Insurance Program in general, please call 1- 877- FEMA MAP (1-877-336-2627) or
<br />visit the FEMA website at http://www.fema.gov.
<br />
<br />Cedar Creek
<br />/ /L1MIT OF DETAILED STUDY
<br />,'/ ZONE X 5576
<br />
<br />Flooding Source
<br />
<br />Larimer County Vertical Datum Offset Table
<br />Vertical Datum
<br />Offset (ft)
<br />
<br />3.7
<br />
<br />1395000 FT
<br />
<br />Big Thompson River (Approx. 2400'
<br />Downstream of Cedar Creek to Approx.
<br />3400' Downstream of Long Gulch)
<br />
<br />Big Thompson River (Larimer County
<br />Boundary to Approx. 2400' Downstream
<br />of Cedar Creak)
<br />
<br />Dickson Gulch
<br />Cedar Creek
<br />
<br />Vertical Datum
<br />Offset (ft)
<br />
<br />3.4
<br />3.5
<br />
<br />Flooding Source
<br />
<br />3.2
<br />
<br />Example: To convert Big Thompson River elevations to NAVD 88,3.2 feet were added to the
<br />NGVD 29 elevations.
<br />
<br />Panel Location Map
<br />
<br />
<br />7
<br />
<br />ZONE X
<br />
<br />ARAP AHO-ROOSEVEL T
<br />NATIONAL FOREST
<br />
<br />Larimer County
<br />Unincorporated Areas
<br />080101
<br />
<br />This Digital Flood Insurance Rate Map (DFIRM) was produced
<br />through a Cooperating Technical Partner (CTP) agreement
<br />between the State of Colorado Water Conservation Board and
<br />the Federal Emergency Management Agency (FEMA).
<br />
<br />18
<br />
<br />400 24' 22.5"
<br />1050 16' 52.5"
<br />
<br />JOINS PANEL 1150
<br />
<br />
<br />Additional Flood Hazard Information and
<br />resources are available from local communities
<br />and the Colorado Water Conservation Board.
<br />
<br />~7ooom E
<br />
<br />NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED WITHIN TOWNSHIP 5 NORTH, RANGE 70 WEST, AND TOWNSHIP 6 NORTH, RANGE 70 WEST.
<br />
<br />478OO0m E
<br />
<br />LEGEND
<br />
<br />1050 15' 00"
<br />400 26' 15"
<br />
<br />400 24' 22.5"
<br />1050 15' 00"
<br />
<br />32
<br />
<br />T.6N.
<br />T. 5 N.
<br />
<br />ZONE X
<br />
<br />5
<br />
<br />ARAPAHO-ROOSEVELT
<br />NATIONAL FOREST
<br />
<br />4
<br />
<br />
<br />9
<br />
<br />II
<br />BIG THOMPSON CANYON
<br />ROAD I @
<br />
<br />8
<br />
<br />ZONE X
<br />
<br />ZONE X
<br />
<br />FOREST BOUNDARY
<br />
<br />17
<br />
<br />SPECIAL FLOOD HAZARD AREAS (SFHAs) SUBJECT TO INUNDATION
<br />
<br />BY THE 10/0 ANNUAL CHANCE FLOOD
<br />
<br />The 1% annual chance flood (100-yearflood), also known as the base flood, is the flood that has a
<br />1 % chance of being equaled or exceeded in any given year. The Special Flood Hazard Area is the
<br />area subject to flooding by the 1% annual chance flood. Areas of Special Flood Hazard include
<br />Zones A, AE, AH, AO, AR, A99, V, and VE. The Base Flood Elevation is the water-surface elevation
<br />of the 1 % annual chance flood.
<br />
<br />
<br />ZONE A
<br />ZONE AE
<br />ZONE AH
<br />
<br />No Base Flood Elevations determined.
<br />Base Flood Elevations determined.
<br />Rood depths of 1 to 3 feet (usually areas of ponding); Base Rood Elevations
<br />determined.
<br />Rood depths of 1 to 3 feet (usually sheet flow on sloping terrain); average
<br />depths determined. For areas of alluvial fan flooding, velodties also determined.
<br />Spedal Flood Hazard Areas formerly protected from the 1% annual chance
<br />flood by a flood control system that was subsequently decertified. Zone AR
<br />indicates that the former flood control system is being restored to provide
<br />protection from the 1 % annual chance or greater flood.
<br />Area to be protected from 1% annual chance flood by a Federal flood protection
<br />system under construction; no Base Flood Elevations determined.
<br />
<br />ZONE AO
<br />
<br />ZONE AR
<br />
<br />4476000m N
<br />
<br />ZONE A99
<br />
<br />
<br />FLOODWAY AREAS IN ZONE AE
<br />
<br />The floodway is the channel of a stream plus any adjacent floodplain areas that must be kept free of
<br />encroachment so that the 1% annual chance flood can be carried without substantial increases in
<br />flood heights.
<br />
<br />OTHER FLOOD AREAS
<br />
<br />ZONE X
<br />
<br />Areas of 0.2% annual chance flood; areas of 1% annual chance flood with
<br />average depths of less than 1 foot or with drainage areas less than 1 square
<br />milei and areas protected by levees from 1% annual chance flood.
<br />
<br />OTHER AREAS
<br />
<br />ZONE X
<br />ZONE D
<br />
<br />Areas determined to be outside the 0.2% annual chance floodplain.
<br />Areas in which flood hazards are undetermined, but possible.
<br />
<br />Roodplain boundary
<br />Roodway boundary
<br />Zone D boundary
<br />
<br />..
<br />
<br />Boundary dividing Special Flood Hazard Area zones and
<br />boundary dividing Spedal Flood Hazard Areas of different Base
<br />Flood Elevations, flood depths or flood velodties.
<br />
<br />Base Flood Elevation line and value; elevation in feet*
<br />
<br />Base Flood Elevation value where uniform within zone;
<br />elevation in feet*
<br />
<br />~ 513 -.".."",
<br />
<br />(EL 987)
<br />
<br />*Referenced to the North American Vertical Datum of 1988
<br />
<br />o
<br />
<br />o
<br />
<br />Cross section line
<br />
<br />104050' 37.5" , 39030' 00"
<br />
<br />Geographic coordinates referenced to the North American
<br />Datum of 1983 (NAD 83), Western Hemisphere
<br />
<br />SOOo-foot ticks: Colorado State Plane coordinate
<br />system, North zone, Lambert Conformal
<br />Conic projection
<br />
<br />lOOO-meter Universal Transverse Mercator grid ticksr zone 13
<br />
<br />National Geodetic Survey bench mark (see explanation in
<br />Notes to Users section of this FIRM panel)
<br />
<br />3180000 FT
<br />
<br />4276000 mN
<br />
<br />KK6400 X
<br />
<br />4475000m N
<br />
<br />MAP REPOSITORY
<br />Refer to listing of Map Repositories on Map Index
<br />
<br />EFFECTIVE DATE OF COUNTYWIDE
<br />FLOOD INSURANCE RATE MAP
<br />DECEMBER 19, 2006
<br />
<br />EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL
<br />
<br />~
<br />c.o
<br />~
<br />~
<br />
<br />...J
<br />W
<br />Z
<br />~
<br />(J)
<br />~
<br />o
<br />....,
<br />
<br />For community map revision history prior to countywide mapping, refer to the Community
<br />Map History table located in the Flood Insurance Study report for this jurisdiction.
<br />
<br />To determine if flood insurance is available in this community, contact your insurance agent or call
<br />the National Flood Insurance Program at 1-800-638-6620.
<br />
<br />.
<br />
<br />4474000m N
<br />
<br />250
<br />t--t
<br />
<br />MAP SCALE 1" = 500'
<br />500
<br />
<br />1000
<br />FEET
<br />I METERS
<br />300
<br />
<br />o
<br />.......
<br />
<br />to---I
<br />150
<br />
<br />~
<br />o
<br />
<br />I
<br />150
<br />
<br />ZONE X
<br />
<br />5544
<br />5542
<br />
<br />
<br />NUMBER
<br />080101
<br />
<br />PANEL SUFFIX
<br />1142 F
<br />
<br />PANEL 1142F
<br />
<br />I
<br />
<br />FLOOD INSURANCE RATE MAP
<br />LARIMER COUNTY,
<br />COLORADO
<br />AND INCORPORATED AREAS
<br />
<br />PANEL 1142 OF 1420
<br />
<br />(SEE MAP INDEX FOR FIRM PANEL LAYOUT)
<br />
<br />CONTAINS:
<br />COMMUNITY
<br />LARIMER COUNTY
<br />
<br />4473000m N
<br />
<br />Notice to User: The Map Number shown below
<br />should be used when placing map orders; the
<br />Community Number shown above should be
<br />used on insurance applications for the subject
<br />community.
<br />
<br />MAP NUMBER
<br />08069C1142F
<br />
<br />EFFECTIVE DATE
<br />DECEMBER 19, 2006
<br />Federal Emergency Management Agency
<br />
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