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<br />I
<br />
<br />I
<br />
<br />.
<br />
<br />14 through 17, reach B consists ofsubarcas 6 through 13,ancl reach C consists of
<br />subareas IthroughS.
<br />
<br />Natural and man made conditions likely to affect flooding and flood damage~
<br />were considered in dividing the flood plain into suhareas. Natural barriers, man
<br />made barriers, and the types and concentration ofJand use were all considerations.
<br />Thc centerline of Dry Creek was a basic dividing line, with all adjoining property
<br />heingineither nght.orleft-bank subareas.
<br />
<br />n.oOD PLAIN SlRUCTI.lRES AND LI\1PROVEMENTS
<br />Land use data were coUected in the Soo..year flood plain of Dry Creek for each
<br />of the 17 SlIOOrcas. There are 675 residential and 254 nonresidential structures in
<br />the SOO-year flood plain. The number of buildings identified during the land use
<br />slIrveyand their values, ine!uding contents, are shown in table 4-2. Suhareas 4and'
<br />5 were found to have no buildings in the SOO-yearDI)'Creek flood plain, but they
<br />were retained in the tahle and in subsequent flood damage tables to provide
<br />complete information. Value. of buildings within the flood plain wcre based on the
<br />type of structure, construction mllterial used, structure size, and structure condition.
<br />
<br />The damage potential was evaluated within ~ch of the subareas for the 2- 5-
<br />00
<br />10-,50".100-, and SOO-year flood events. Table 4-3 shows the number of builrline~
<br />affected by various flood events. Average flood depths within each subarea byflood
<br />event is shown in tahle 4-4. The average flood depths represent the depth of
<br />fioodin~ on the ground adjacent to each building.
<br />
<br />IS111'tlAIEP. FLOOD DAMAGFS
<br />lJrnd ose information, the topography of the study area, and t100d depth 2nd
<br />frequency data were oorreIale<l witt! stage.damage relationships to estimate t100d
<br />
<br />Total
<br />robl
<br />
<br />TOTAL
<br />
<br />.
<br />
<br />4-IS
<br />
<br />Subarea
<br />
<br />1
<br />
<br />,
<br />
<br />,
<br />
<br />.
<br />
<br />,
<br />
<br />,
<br />
<br />7
<br />
<br />.
<br />
<br />.
<br />
<br />"
<br />
<br />"
<br />
<br />"
<br />
<br />"
<br />
<br />"
<br />
<br />"
<br />
<br />"
<br />
<br />17
<br />
<br />Activity
<br />
<br />Residential
<br />Commercial
<br />Residential
<br />Commercial
<br />Residential
<br />Commercial
<br />Residential
<br />Commercial
<br />Residential
<br />COmmercia'
<br />ReSidential
<br />Commercial
<br />ReSidential
<br />Commercial
<br />Residential
<br />COmmercial
<br />Residential
<br />COmmercial
<br />Residential
<br />Commercial
<br />Resldenlial
<br />Commercial
<br />Residential
<br />Commercial
<br />Resideolial
<br />Commercial
<br />Residential
<br />Commercial
<br />Residential
<br />Commercial
<br />Residential
<br />Commercial
<br />Residential
<br />Commerciat
<br />
<br />Residential
<br />Commeroal
<br />
<br />T.ble4.-2
<br />BuHding.ndContent V.lunlnthe
<br />tiOO-YnrFloodPlllin
<br />(1990 Values)
<br />
<br />No.
<br />
<br />Structure
<br />Value
<br />
<br />o
<br />7
<br />"
<br />"
<br />1
<br />..
<br />o
<br />o
<br />o
<br />o
<br />3S
<br />33
<br />"
<br />31
<br />"
<br />"
<br />'"
<br />1S
<br />o
<br />,
<br />'"
<br />o
<br />1
<br />o
<br />"
<br />12
<br />"
<br />8
<br />".
<br />8
<br />o
<br />3
<br />,
<br />,
<br />
<br />so
<br />$212.400
<br />$323.400
<br />$1.32Moo
<br />$48.400
<br />$19.893.700
<br />SO
<br />SO
<br />SO
<br />SO
<br />$',075.000
<br />$2.942.700
<br />$',456.000
<br />$6,925,900
<br />5390.200
<br />$3,279,300
<br />$4.009.800
<br />$1,706.200
<br />SO
<br />5232.\100
<br />52,719,300
<br />SO
<br />$23,100
<br />SO
<br />$1,348.200
<br />$2.278.300
<br />$323.100
<br />5391.600
<br />$2.600.100
<br />$238.800
<br />SO
<br />$498.800
<br />5128.600
<br />$67.900
<br />
<br />'"
<br />25.
<br />
<br />$14.445.200
<br />$39.992.600
<br />
<br />'"
<br />
<br />Content
<br />Value
<br />
<br />SO
<br />"'.000
<br />$97,000
<br />sa98.600
<br />$24.200
<br />$11,589.800
<br />"
<br />"
<br />SO
<br />SO
<br />$537.SOO
<br />$1,899.8\0
<br />$728.000
<br />$3,980.900
<br />$195.100
<br />$1,979.200
<br />52,004.900
<br />$9504.500
<br />"
<br />5190.800
<br />$1.359.70Ci
<br />SO
<br />5lt.600
<br />"
<br />$674,100
<br />$1.693.500
<br />$161,8ltO
<br />$157.200
<br />$1.300,100
<br />$144.400
<br />"
<br />$392.500
<br />$64,300
<br />$17.000
<br />
<br />$7,158,100
<br />$23.983.210
<br />
<br />.
<br />
<br />Tolal
<br />V.tue
<br />
<br />"
<br />$297.400
<br />$420.400
<br />$2.225.100
<br />572.600
<br />$31.483.500
<br />"
<br />SO
<br />"
<br />SO
<br />$1.812.500
<br />54.842.510
<br />$2.134.000
<br />$10,906,800
<br />$585.300
<br />$5.258.500
<br />sa,014.700
<br />$2.660.700
<br />SO
<br />$423.700
<br />54.019.000
<br />$0
<br />$34.100
<br />SO
<br />$2.022.300
<br />$3.911.800
<br />5484.100
<br />$5<18.800
<br />$3,900,200
<br />$383.000
<br />"
<br />sa89.100
<br />$192,900
<br />534.900
<br />
<br />$21,803.300
<br />$63.915.810
<br />
<br />$!>4.431.l:IOO 531.141.310 $85.579.110
<br />
<br />4-]6
<br />
<br />.
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