YAVAPAI COUNTY, ARIZONA Federal Emergency ... - FEMA Region 9

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Zone D Zone D is the flood insurance rate zone that corresponds to unstudied areas where flood hazards are undetermined, but possible. 6.0 FLOOD INSURANCE RATE MAP The FIRM is designed for flood insurance and floodplain management applications. For flood insurance applications, the map designates flood insurance rate zones as described in Section 5.0 and, in the 1-percent annual chance floodplains that were studied by detailed methods, shows selected whole-foot BFEs or average depths. Insurance agents use the zones and BFEs in conjunction with information on structures and their contents to assign premium rates for flood insurance policies. For floodplain management applications, the map shows by tints, screens, and symbols, the 1- and 0.2-percent annual chance floodplains, floodways, and the locations of selected cross sections used in the hydraulic analyses and floodway computations. The countywide FIRM presents flooding information for the entire geographic area of Yavapai County. Previously, FIRMs were prepared for each incorporated community and the unincorporated areas of the County identified as floodprone. This countywide FIRM also includes flood-hazard information that was presented separately on Flood Boundary and Floodway Maps, where applicable. Historical data relating to the maps prepared for each community, up to and including the June 6, 2001, countywide, are presented in Table 10, "Community Map History." 7.0 OTHER STUDIES FIRMs were previously published for Yavapai County unincorporated areas, for the Towns of Camp Verde, Chino Valley, Clarkdale, and Prescott Valley, and for the Cities of Cottonwood, Prescott, and Sedona. For the unincorporated areas of Yavapai County, the USACE has published Flood Plain Information reports for Verde River (Vicinity of Bridgeport and Camp Verde), Wet Beaver Creek (Vicinity of Lake Montezuma), Verde River and Tributaries (Vicinity of Clarkdale and Cottonwood), West Clear Creek, and Hassayampa River (Vicinity of Wickenburg) (USACE, 1975; U.S. Department of the Interior, 1981, editorial corrections, 1982; USACE, August 1976; USACE, 1972; 83, and 84). Because of more recent topographic mapping, hydrologic analyses based on longer lengths of record, and refined study procedures for this study, the Yavapai County Flood Insurance Study supersedes the Flood Plain Information reports (U.S. Department of Agriculture, 1964). 59
COMMUNITY NAME INITIAL IDENTIFICATION FLOOD HAZARD BOUNDARY MAP REVISIONS DATE FIRM EFFECTIVE DATE FIRM REVISIONS DATE Camp Verde, Town of July 25, 1978 None August 19, 1985 September 27, 1991 September 20, 1996 December 19, 1997 September 3, 2010 Chino Valley, Town of May 3, 1974 June 11, 1976 September 1, 1981 May 4, 1992 September 3, 2010 Clarkdale, Town of August 23, 1974 November 28, 1975 December 1, 1982 September 3, 2010 Cottonwood, City of June 7, 1974 May 2, 1975 September 16, 1981 November 19, 1987 September 3, 2010 Dewey-Humboldt, Town of July 25, 1978 1 None August 19, 1985 1 September 20, 1996 1 December 19, 1997 1 September 3, 2010 Jerome, Town of 2 None None None None Prescott, City of May 17, 1974 None February 2, 1977 March 29, 1983 September 4, 1985 March 16, 1988 August 19, 1991 September 3, 2010 Prescott Valley, Town of March 11, 1980 None August 16, 1982 July 16, 1990 September 3, 2010 1 This community did not have its own FIRM prior to the countywide FIS. The land area for this community was previously shown on the FIRM for the unincorporated areas of Yavapai County, but was not identified as a separate NFIP community. Therefore, the dates for this community were taken from the FIRM for Yavapai County. 2 Non-Floodprone TABLE 10 FEDERAL EMERGENCY MANAGEMENT AGENCY <strong>YAVAPAI</strong> <strong>COUNTY</strong>, AZ AND INCORPORATED AREAS COMMUNITY MAP HISTORY
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YAVAPAI COUNTY, ARIZONA AND INCORPO
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TABLE OF CONTENTS - Volume 1 Page 1
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TABLE OF CONTENTS - Volume 3 - cont
Page 7 and 8:
TABLE OF CONTENTS - Volume 5 - cont
Page 9 and 10:
authority and acknowledgments for e
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In the March 29, 1983, revision, up
Page 13 and 14:
The September 20, 1996, revision al
Page 15 and 16: update corporate limits, to change
Page 17 and 18: TABLE 2 - STREAMS STUDIED BY DETAIL
Page 19 and 20: TABLE 3 - LETTERS OF MAP CHANGE - c
Page 21 and 22: Precipitation in the study area is
Page 23 and 24: TABLE 4 - HISTORIC RECORDED DISCHAR
Page 25 and 26: The Verde Lakes Estates in the Town
Page 27 and 28: Problems created by large magnitude
Page 29 and 30: All flooding sources were analyzed
Page 31 and 32: approximately 1,600 feet downstream
Page 33 and 34: TABLE 5 - SUMMARY OF DISCHARGES FLO
Page 35 and 36: TABLE 5 - SUMMARY OF DISCHARGES - c
Page 47 and 48: Mapping, Inc. (Kenney Aerial Mappin
Page 49 and 50: 1985. It was determined from the si
Page 51 and 52: Values for the roughness coefficien
Page 53 and 54: TABLE 6 - MANNING'S "n" VALUES - co
Page 55 and 56: To minimize the impact of the levee
Page 57 and 58: ecommended as the approximate areas
Page 59 and 60: TABLE 8 - VERTICAL DATUM CONVERSION
Page 61 and 62: Approximate 1-percent annual chance
Page 63 and 64: e feasible in view of extremely hig
Page 65: average depths are between 1 and 3
Page 69 and 70: The only other study completed for
Page 71 and 72: Cooper Aerial Surveys, Aerial Photo
Page 73 and 74: Kenny Aerial Mapping, Topographic M
Page 75 and 76: U.S. Department of the Army, Corps
Page 77 and 78: Joes Hill, Arizona (1969); King Can
Page 79 and 80: Pipe Creek Railroad Wash Silver Spr
Page 81 and 82: Manning’s “n” values were ass
Page 83 and 84: FLOODING SOURCE FLOODWAY 1-PERCENT-
Page 85 and 86: FLOODING SOURCE FLOODWAY 1-PERCENT-
Page 87 and 88: TABLE 9 FLOODING SOURCE FLOODWAY 1-
Page 93: TABLE 9 FLOODING SOURCE FLOODWAY 1-
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YAVAPAI COUNTY, ARIZONA Federal Emergency ... - FEMA Region 9

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