|
<br />,
<br />o
<br />.
<br />5~
<br />II
<br />
<br />~ti
<br />~~
<br />;i
<br />Ii
<br />"
<br />,
<br />
<br />1
<br />.
<br />
<br />I'
<br />, .
<br />H~
<br />I...
<br />'0.
<br />II! HI
<br />1':1:1:::
<br />
<br />.
<br />.
<br />.
<br />.
<br />..
<br />~ ~..;
<br />..
<br />'0.
<br />.
<br />.
<br />.
<br />j
<br />.
<br />
<br />"
<br />. 0
<br />.
<br />in
<br />'"
<br />
<br />LI.
<br />'lib 0
<br />.'l0...:1
<br />1, "I.
<br />'8H
<br />.'l ~ .;
<br />.0.
<br />
<br />1'1
<br />'.1
<br />.,
<br />::l ~.;
<br />...
<br />'"
<br />.
<br />,
<br />. ~
<br />'" ~.
<br />. '0
<br />, ,"
<br />t'O e ~I
<br />I';: i:l ~I
<br />
<br />"l
<br />. o.
<br />~: i ~
<br />~ '"
<br />~l~d
<br />
<br />i I
<br />l!lil
<br />
<br />" ~
<br />,
<br />~u
<br />'0'
<br />& ~..
<br />
<br />Tabl" 3
<br />
<br />i
<br />.
<br />
<br />.....,"''''''''''''''''0''''''0''
<br />';:>i~.;"':"':"':"';~",,gs"':
<br />:i~i:!ilolo.,lo'\;.,.,,,,,,,:;:;
<br />-<-'-'-0..-'.........-'....
<br />,,0> "'" Ol"
<br /><:;-~ ,,;;; "'."
<br />
<br />.
<br />
<br />.
<br />.,
<br />
<br />.."'''''""'-''''"'"...''''''....
<br />';'';,iooooo:''';'';,,;i
<br />:'8'~O\1;;!i;lololo:;;I<:.'f;.!Q:;o
<br />........-<-"-"-0....-"...-<-<
<br />"" '''' ""
<br />,..... ......... .........
<br /><>" "" ""
<br />
<br />"'O"'''''''''''H''<>'''''~"",
<br />';'';''';'';''''';'0';0-0';.;.;,
<br />~:B:B)g:B:8;;,\;"l;Ii';"'!i;'"
<br />...;""......-<...-"..-<5...~
<br />"" ."" "'"
<br />........ -.... ........
<br />"'" ''', <><>
<br />
<br />.
<br />.,
<br />.
<br />
<br />"'''0'''<><>00''''''00''''''-'
<br />$**~i~~~~~~t~
<br />................-<-.........-<
<br />'ocr. ""' ""'
<br />'............ ........
<br /><>'" "0 0:>
<br />
<br />",...,"'""...-"""..0........,
<br />t~~~*~~~~~g~~
<br />.....-<-<..-<...-<..-<..-<-<
<br />"" "" ""
<br />................ ........
<br />0" "" <>::>
<br />
<br />,--
<br />'I''f.
<br />'"
<br />....,~
<br />
<br />"
<br />iH
<br />
<br />"["
<br />... "'...
<br />'S ..
<br />)!l" ".';.~
<br />
<br />-"'
<br />
<br />..
<br />
<br />...""".<>.,
<br />-.
<br />
<br />"
<br />,<::
<br />'I
<br />s
<br />-'
<br />.,
<br />.,
<br />.
<br />.,
<br />
<br />.
<br />.
<br />.
<br />..
<br />.
<br />"
<br />.
<br />. .
<br />Ii
<br />
<br />.
<br />.
<br />'of
<br />s.
<br />
<br />,
<br />.
<br />
<br />l
<br />
<br />..
<br />.
<br />,
<br />"
<br />
<br />15
<br />
<br />Flooded /'Ireas
<br />
<br />,
<br />.,
<br />.
<br />
<br />The 10<1-year
<br />
<br />freqlle:>cy flooa has been selected by the State of
<br />
<br />Color<ldo as the flood event to be used for floodplain delineation and
<br />
<br />regulation.
<br />
<br />Thus
<br />
<br />the Flooded Area plates show only the boundary of
<br />
<br />the l~@-year floodplain.
<br />
<br />Since the base map for
<br />
<br />the Flooded
<br />
<br />Area
<br />
<br />.
<br />..
<br />,
<br />
<br />plates
<br />
<br />is a
<br />
<br />"
<br />
<br />contour map the outlines of the other flOod events,
<br />
<br />l~-, 5~-, and S@@-year, can be readi 1 y plot ted using
<br />
<br />eho
<br />
<br />information
<br />
<br />in Table 3.
<br />
<br />The area delineated
<br />
<br />on the Flooded Area plates as the l@@-year
<br />
<br />floodplain meets the requirements of H.B. 1@41 as an area of
<br />
<br />state
<br />
<br />o
<br />^
<br />o
<br />-
<br />
<br />interest.
<br />
<br />Also upon official approval of this report by the Colorado
<br />
<br />Water COrl::;erv<ltion Board the area outlined
<br />
<br />boundiHy will
<br />
<br />by the l~~~year
<br />a floodplain area and maybe regulated
<br />
<br />flood
<br />
<br />be designated
<br />
<br />accordingly by the local officials.
<br />
<br />o
<br />.
<br />,
<br />
<br />Floodway
<br />
<br />.
<br />"
<br />,
<br />.
<br />.
<br />
<br />encroachment on floodplains, such as artifical fill, reduces the
<br />
<br />,
<br />.
<br />l
<br />!
<br />s
<br /><
<br />J
<br />.
<br />.
<br />
<br />flood-carrying
<br />
<br />cap'lclty ..nn incr..",'''''s floon hei'Jhts, th'JS increasins:
<br />
<br />flood hazards in areas beyond the encroachment its..lf. On.. i.lSp"ct of
<br />
<br />floodplain management
<br />
<br />involves balancing
<br />
<br />the economic gain
<br />
<br />from
<br />
<br />floodplain development against the resulting increase in flood hazard.
<br />
<br />>
<br />.
<br />.
<br />1
<br />,
<br />!
<br />
<br />For purposes of the Nation<ll Flood Insurance program, the concepto! a
<br />
<br />floodway is used as a tool to assist local communities in this aspect
<br />
<br />of
<br />
<br />floodplain management.
<br />
<br />Under
<br />
<br />this concept,
<br />
<br />the area of the
<br />
<br />.
<br />o
<br />.
<br />o
<br />I
<br />.
<br />"
<br />o
<br />.
<br />.
<br />-
<br />,
<br />.
<br />.s
<br />
<br />1;}"~ye,H flood is divided into a floodliay and a floodway fringe. The
<br />
<br />floodway is a channel of a stream, plus any adjacent floodplain areas,
<br />
<br />that must be
<br />
<br />kept
<br />
<br />free of encroachment in order that the 100~year
<br />
<br />ftuod b.. cdrried without substantial increases in flood heights. As
<br />
<br />,
<br />.,
<br />
<br />minimum standards,
<br />
<br />Federal ;:nsurance Administration limits such
<br />
<br />,h,
<br />
<br />:6
<br />
|