NOTES TO USERS LEGEND 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 SPECIAL FLOOD HAZARD AREAS (SFHAs) SUBJECT TO INUNDATION 3205000 FT 3210000 FT BY THE 1% ANNUAL CHANCE FLOOD drainage sources of small size. The community map repository should be 104° 46' 52.5" 104° 45' 00.0" AL JOINS PANEL 0069 The 1% annual chance flood (100-year flood), also known as the base flood, is the flood that has a consulted for possible updated or additional flood hazard information. 39° 30' 00.0" , B 39° 30' 00.0" 5 H 1% chance of being equaled or exceeded in any given year. The Special Flood Hazard Area is the E ZONE R ! ! ! N ( ( 8 A 5995 ( area subject to flooding by the 1% annual chance flood. Areas of Special Flood Hazard include 5 R T I L 8 H D To obtain more detailed information in areas where Base Flood Elevations D X Zones A, AE, AH, AO, AR, A99, V, and VE. The Base Flood Elevation is the water-surface elevation E ! L R EZONE X WOO (BFEs) and/or floodways have been determined, users are encouraged to S of the 1% annual chance flood. P D ST L 5998 k 5 R A N W A e 8 SB consult the Flood Profiles and Floodway Data and/or Summary of Stillwater UR R ZONE X 6 O G ZONE A No Base Flood Elevations determined. e C M r 0 T K W D Tallman Elevations tables contained within the Flood Insurance Study (FIS) report that E M I E C A L ZONE AE Base Flood Elevations determined. R L A O E O Gulch accompanies this FIRM. Users should be aware that BFEs shown on the FIRM D T M W O 3 ZONE AH Flood depths of 1 to 3 feet (usually areas of ponding); Base Flood Elevations S B NE W 0 represent rounded whole-foot elevations. These BFEs are intended for flood W R E 0 E H 5 Y M N 6 determined. 8 A D I O N y R L 6 R K D insurance rating purposes only and should not be used as the sole source of flood r 2 CT ET L O B AM r T T D ZONE AO Flood depths of 1 to 3 feet (usually sheet flow on sloping terrain); average O ( ! O e N L L elevation information. Accordingly, flood elevation data presented in the FIS , h P N N C U depths determined. For areas of alluvial fan flooding, velocities also determined. ZONE X C C K E report should be utilized in conjunction with the FIRM for purposes of construction ZONE O NT R E C R ZONE AR Special Flood Hazard Areas formerly protected from the 1% annual chance EV D K and/or floodplain management. R X ILLE flood by a flood control system that was subsequently decertified. Zone AR , CT R 5 indicates that the former flood control system is being restored to provide D 8 6006 Ñ 6 Ñ Ñ 4372000 M protection from the 1% annual chance or greater flood. Boundaries of the floodways were computed at cross sections and interpolated 4 Y between cross sections. The floodways were based on hydraulic considerations A ZONE A99 Area to be protected from 1% annual chance flood by a Federal flood protection W PETERSBURG ZONE AE system under construction; no Base Flood Elevations determined. with regard to requirements of the National Flood Insurance Program. Floodway 586 E 6 G CT widths and other pertinent floodway data are provided in the Flood Insurance 28 D I 26 FLOODWAY AREAS IN ZONE AE Study report for this jurisdiction. AM 27 R B T , The floodway is the channel of a stream plus any adjacent floodplain areas that must be kept free of C GAINES MILL W 68 Town of Parker encroachment so that the 1% annual chance flood can be carried without substantial increases in D D 8 D Certain areas not in Special Flood Hazard Areas may be protected by flood G 5 O CT R R R N D flood heights. I A 080310 control structures. Refer to Section 2.4 “Flood Protection Measures”of the K G G G E R R R Flood Insurance Study report for information on flood control structures for this N ZONE AE M ZONE X OTHER FLOOD AREAS U U A U , B B jurisdiction. Douglas County B S S S ZONE X Areas of 0.2% annual chance flood; areas of 1% annual chance flood with E E E GLENDALE LN E E E average depths of less than 1 foot or with drainage areas less than 1 square L L Unincorporated Areas DOUGLAS COUNTY L The projection used in the preparation of this map was Universal Transverse mile; and areas protected by levees from 1% annual chance flood. Mercator (UTM) Zone 13. The horizontal datum was NAD 83, GRS80 spheroid. 080049 TOWN OF PARKER 70 AO Differences in datum, spheroid, projection or State Plane zones used in the 58 , OTHER AREAS production of FIRMs for adjacent jurisdictions may result in slight positional C ZONE X Areas determined to be outside the 0.2% annual chance floodplain. U differences in map features across jurisdiction boundaries. These differences do L ZONE D Areas in which flood hazards are undetermined, but possible. P E E E P P not affect the accuracy of this FIRM. 58 P P P 7 P E E 2 E R R R R R R I I I C C C AO Floodplain boundary , Flood elevations on this map are referenced to the North American Vertical Floodway boundary Datum of 1988 (NAVD 88). These flood elevations must be compared to ZONE X HESS RD Zone D boundary HESS RD 58 structure and ground elevations referenced to the same vertical datum. An 74 average offset between NAVD 88 and the National Geodetic Vertical Datum of C GO TE IR Boundary dividing Special Flood Hazard Area zones and 1929 (NGVD 29) has been computed for each Douglas County flooding source. TERLA A PL N boundary dividing Special Flood Hazard Areas of different Base This offset was then applied to the NGVD 29 flood elevations that were not Town of Parker AP CREEK 1605000 FT ZONE A , Flood Elevations, flood depths or flood velocities. revised during the creation of this countywide format FIRM. The offsets for each 5 N 080310 87 L 6 L K N 513 Base Flood Elevation line and value; elevation in feet* flooding source shown on this FIRM are shown in the Douglas County Vertical HO LOW EE C A C R C H T R A E Datum Offset Table below. For information regarding conversion between the E T Base Flood Elevation value where uniform within zone; 5878 E E (EL 987) K A D elevation in feet* ! National Geodetic Vertical Datum of 1929 and the North American Vertical Datum ( U R (! C T of 1988, visit the National Geodetic Survey website at http://www.ngs.noaa.gov or *Referenced to the North American Vertical Datum of 1988 DOWNY CR EK contact the National Geodetic Survey at the following address: C D EE RE DR R O K ZONE X C A A Cross section line E W P K %, %, E W E E O L E ak N ! ! K O ! ( ( E E ( Spatial Reference System Division E T T Gu T Douglas County lc Y L h R R R C C C L ZONE X C C C National Geodetic Survey, NOAA C O Unincorporated Areas Geographic coordinates referenced to the North American T 104° 50' 37.5" , 39° 30' 00" H O O Silver Spring Metro Center O 080049 Datum of 1983 (NAD 83), Western Hemisphere R R R A A 1315 East-West Highway ZONE A 5880 A Silver Spring, Maryland 20910 C 4276000 M 1000-meter Universal Transverse Mercator grid ticks, zone 13 BELLISA RI O R L A Y P M (301) 713-3191 CREE K R 3180000 FT 5000-foot ticks: Colorado State Plane coordinate A T O Q E system, central zone (FIPSZONE 502), Lambert Conformal O N 1% ANNUAL CHANCE 882 ZONE X K 5 S LEAR CRE , U Conic projection To obtain current elevation, description, and/or location information for bench C EK R FLOOD DISCHARGE Q E O ZONE D A A , F REEK DR R R C marks shown on this map, please contact the Information Services Branch of the EN CONTAINED IN CULVERT C C P C National Geodetic Survey bench mark (see explanation in H IS X R KK6400 F S D National Geodetic Survey at (301) 713-3242, or visit its website at CR R K E Notes to Users section of this FIRM panel E P REE E y C A E utar O R K O AK K O ib CR A P L r ! E http://www.ngs.noaa.gov. For information about additional control points ( E SKATOON T E CL SA A S PL L 5884 N P V d K E 4371000 M Ñ L E e Ñ Ñ G maintained by Douglas County, please visit H m L W W a U K T n ZONE A A O http://www.publicstaging.douglas.co.us/website/control/viewer.htm. R n R O D C Y K U K E T O E RE D E R C N R LK MAP REPOSITORY C E E E E Base map information shown on this FIRM was provided by the Douglas County C S Refer to listing of Map Repositories on Map Index C AR K I N T L S í I , GIS Department and the Town of Castle Rock GIS Department.