000 TTAA00 KMSR 301542 D E S M O I N E S H Y D R O L O G I C S E R V I C E A R E A COUNTY FLASH FLOOD GUIDANCE NATIONAL WEATHER SERVICE NORTH CENTRAL RIVER FORECAST CENTER...MINNEAPOLIS MN AVERAGE INCHES OF RAINFALL FOR GIVEN DURATIONS REQUIRED TO INITIATE FLASH FLOODING ON SMALL STREAMS. GENERAL FLASH FLOOD GUIDANCE FOR STEEP TERRAIN AND URBAN AREAS ARE ONE TO TWO INCHES OR MORE IN ONE TO TWO HOURS OR LESS RESPECTIVELY. REFERENCE ROML C-15-90 FILED WITH CHAPTER E-20. ISSUED 0938 AM CST TUE NOV 30 1999 .B MSR 991130 Z DH12/DC9911301538 /DUE/PPHCF/PPTCF/PPQCF : :IDENT 1HR 3HR 6HR COUNTY NAME :======= ==== ==== ==== ==================== *** IOWA COUNTIES *** IAC013 1.6/ 1.9/ 2.1 :BLACK HAWK IAC015 2.0/ 2.4/ 3.0 :BOONE IAC017 1.5/ 1.8/ 2.0 :BREMER IAC023 1.0/ 1.3/ 1.5 :BUTLER IAC025 2.7/ 3.3/ 4.0 :CALHOUN IAC027 2.2/ 3.1/ 4.0 :CARROLL IAC033 1.0/ 1.3/ 1.5 :CERRO GORDO IAC039 1.7/ 1.9/ 2.3 :CLARKE IAC049 1.9/ 2.2/ 2.8 :DALLAS IAC051 2.0/ 2.3/ 2.6 :DAVIS IAC063 2.0/ 2.5/ 3.0 :EMMET IAC069 1.1/ 1.4/ 1.6 :FRANKLIN IAC073 2.0/ 2.5/ 3.3 :GREEN IAC075 1.9/ 2.2/ 2.4 :GRUNDY IAC077 1.7/ 1.9/ 2.3 :GUTHRIE IAC079 2.2/ 2.5/ 2.8 :HAMILTON IAC081 1.0/ 1.3/ 1.5 :HANCOCK IAC083 1.9/ 2.3/ 2.5 :HARDIN IAC091 2.7/ 3.3/ 4.0 :HUMBOLDT IAC099 1.8/ 2.1/ 2.3 :JASPER IAC109 1.8/ 2.2/ 2.7 :KOSSUTH IAC117 1.8/ 2.3/ 2.8 :LUCAS IAC121 1.7/ 1.9/ 2.3 :MADISON IAC123 2.1/ 3.0/ 3.4 :MAHASKA IAC125 1.8/ 2.4/ 2.9 :MARION IAC127 1.7/ 2.0/ 2.2 :MARSHALL IAC135 2.0/ 2.3/ 2.7 :MONROE IAC147 3.2/ 3.7/ 4.4 :PALO ALTO IAC151 2.7/ 3.3/ 4.0 :POCAHONTAS IAC153 2.0/ 2.4/ 2.7 :POLK IAC157 1.6/ 1.9/ 2.1 :POWESHIEK IAC161 3.0/ 3.4/ 4.0 :SAC IAC169 1.7/ 2.0/ 2.2 :STORY IAC171 1.7/ 2.0/ 2.2 :TAMA IAC179 2.0/ 2.3/ 2.7 :WAPELLO IAC181 1.7/ 1.9/ 2.3 :WARREN IAC187 2.7/ 3.1/ 3.7 :WEBSTER IAC189 1.8/ 2.1/ 2.5 :WINNEBAGO IAC195 2.0/ 2.3/ 2.5 :WORTH IAC197 1.1/ 1.4/ 1.6 :WRIGHT .END