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NOTES TO USER-S 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. JOINS PANEL 0437 105005'37.5" 40001 '52.5" 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 BPEs 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. Coastal 'Base Flood Elevation (BFEs) shown on this map apply only land- ward of 0.0' National Geodetic Vertical Datum (NGVD). 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. Boundaries of the floodways were computed at cross sections and interpolated between cross sections. The floodways were based on hydraulic considerations with reg.ard 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 in this jurisdiction. The projection used in the preparation of this map is Universal Tranverse Mercator (UTM) Zone 13. The horizontal datum is NAD27, CLARKE1866 spheroid. Differences in datum, spheroid, projection or UTM zones used in the productiqn 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. Flood elevations on this map are referenced to the National Geodetic Vertical Datum of ',1929. 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: Vertical Network Branch, N/CG13 National Geodetic Survey, NOAA Silver Spring Metro Center 3 1315 East-West Highway Silver Spring, Maryland 20910 (301) 713-3191 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 (301) 713-3242, or visit their website at www.ngs.noaa.gov. Base map information shown on this FIRM was provided in digital format by U.S. Bureau of Census TIGER files and have been geopositionally corrected. 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. 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; Phone: 800-358-9616 FAX: 800-358-9620 www.fema.gov/msc 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 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 AE Elmwood Reservoir 22 23 ZONE X ~UNNAMED ROAD r ZONE X ex) (") ~ o ....I W Z <( D.. (f) Z (5 ..., I h: o z 26 BOULDER COUNTY UNINCORPORATED AREAS 080023 LIMIT OF DETAILED STUDY I- w LU 0:: I- eI) Marfell Lakes :r: ?- m .... .... CORPORATE LIMITS I- LU LU ~ I I ZONE X "- ~ ........ BOULDER COUNTY UNINCORPORATED AREAS 080023 CITY OF LAFAYETTE I L BOULDER COUNTY I I E " '\ CITY OF LAFAYETTE 080026 BOULDER COUNTY UNINCORPORATED AREAS 080023 (2) FLOODING EFFECTS FROM COAL CREEK STREET / ::/ / / r EAST ELM T1N T1S 2 ROAD 3 40000'00/1 105005'37.5/1 JOINS PANEL 0577 TOWN OF ERIE 24 CORPORATE LIMITS FLOOD HAZARDS SHOWN WITHIN THE TOWN OF ERIE ARE FOR INFORMATION ONLY. FOR FLOOD INSURANCE PURPOSES REFER TO SEPARATELY PUBLISHED FLOOD INSURANCE RATE MAP. ZONE X 25 NOTE: MAP AREA SHOWN ON THIS PANEL IS LOCATED WITHIN TOWNSHIP 1 NORTH, RANGE 69 WEST AND TOWNSHIP 1 SOUTH, RANGE 69 WEST. ZONE X 36 Ditch RAILROAD ;r-1N 'ns- 1 ZONE X ZONE AE LEGEND SPECIAL FLOOD HAZARD AREAS SUBJECT TO INUNDATION BY THE 1 % ANNUAL CHANCE FLOOD EVENT 1 05 003'45" 40001 '52.5" 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. ZONE A ZONE AE ZONE AH ZONE AO ZONE AR ZONE A99 ZONE V ZONE VE 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. 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. Area to be protected from 1 % annual chance flood event 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. 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. ZONE X ZONE X ZONE 0 ~~~ ~ ~ ~ ",,~1 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 Areas determined to be outside the 0.2% annual chance floodplain. Areas in which flood hazards are undetermined, but possible. COASTAL BARRIER RESOURCES SYSTEM (CBRS) AREAS OTHERWISE PROTECTED AREAS (OPAs) CBRS areas and OPAs are normally located within or adjacent to Special Flood Hazard Areas. Floodplain Boundary Floodway Boundary Zone D Boundary Coastal Barrier Boundary ................ Boundary dividing Special Flood Hazard Areas of different Base Flood Elevations, flood depths or velocities. (EL 987) ~513~ Base Flood Elevation line and value; elevation in feet* Base Flood Elevation value where uniform within zone; elevation in feet* * Referenced to the National Geodetic Vertical Datum of 1929 0---0 @----@ Transect Line Cross Section Line 9r07'30", 32022'30" Geographic coordinates referenced to the North American Datum of 1927 (NAD 27) LO ~ ~ o ....I W Z <( D.. (f) Z o ...., DX551 <k 4276000M 1 OOO-meter Universal Transverse Mercator grid values, zone 13 600000 FT SOOO-foot grid ticks Bench mark (see explanation in Notes to Users section of this FIRM panel). . M1.5 River Mile MAP REPOSITORY Refer to Repository Listing on Index Map EFFECTIVE DATE OF COUNTYWIDE FLOOD INSURANCE RATE MAP JUNE 2, 1995 EFFECTIVE DATE(S) OF REVISION(S) TO THIS PANEL October 4, 2002: to change base flood elevations, to change special flood hazard areas, to change zone designations, to update roads and road names, to reflect updated topographic information, to incorporate previously issued letters of map revision, and to change floodway. 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 (800)638-'6620. .. 500' MAP SCALE 1" f----j f----j f----j 150 0 150 I METERS 300 PANEL 0439 G 1 FIRM FLOOD INSURANCE RATE MAP BOULDER COUNTY, COLORADO AND INCORPORATED AREAS PANEL 439 OF 595 (SEE MAP INDEX FOR FIRM PANEL LAYOUT) CONTAINS: COMMUNITY NUMBER PANEL SUFFIX BOULDER COUNTY, UNINCORPORATED AREAS LAFA VETTE, CITY OF 0439 0439 G G 080023 080026 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 08013C0439 G MAP REVISED: OCTOBER 4, 2002 Federal Emergency Management Agency