|
<br />1938
<br />
<br />AERIAL VIEWS
<br />
<br />1962
<br />
<br />
<br />
<br />DE8RIS FAN - migration of debris flow channeis
<br />between 1938 1977
<br />
<br />
<br />1969
<br />
<br />
<br />9
<br />
<br />1977
<br />
<br />I
<br />I
<br />I
<br />
<br />Lorge vobl!:l" of ""'tec1,al, overtopped tn" \>an"g of the "",in cba"-nel and w.u
<br />
<br />divert~d into ,He:l.S nf the fan that h"'d not been inun,j,.ted by debris for
<br />
<br />s""e ctme. Th{~ dQcu,"cntcd mtllfatlo<l of d~hfts flo.. ch.ln~els pro"ld(!,~ do~r
<br />
<br />eotd"[\~,, ~h,,~ .; n,~un~, '~el1-d"flnd Jabd~ flo", cha.nn.d only ~f"""C6 a
<br />
<br />hlse sensa of security against f>Oten~ial debris flow da(oage.
<br />
<br />Natural and 6eaeflclal Flood Plal~ Values
<br />
<br />The Chalk Creek flood plain c~n be compared to an oasis, for like the oa"Ls
<br />
<br />U h,,-~ Ii "ate' supply that <lurtur"s rip,,-rL:m v"ge~"tio" 1I"d ~hus suppll,," "
<br />
<br />~QllfC" of food, cover and water for '.nldlHe in a~ are" ...here these survival
<br />
<br />n~ed~ are at be.t ~Cafce. V,,~et~tton in the flood pla{rr cQ~$lats of cela-
<br />
<br />tivcly lush, ",ixcd llrolo'th~ of narro",-lenf cottonlo'ood, pinyon ptne, pender".a
<br />
<br />~ln~. a:'ru~e.. "tder, ~"P"", ,..Ulo",s, ~te"'''tts, ",nd rose. nine.bark. and a
<br />
<br />",ide vartety {)f gn~g"5 a"d forbs. The MHO"'. veda"t Hood pLai" '..hh it5
<br />
<br />div"r"~ vcgeta:ion is an ae.eheticdlly pleas!.'", reli~f Ero:o the "'\Jeh dryer
<br />
<br />liplanrl~ slirr"undtnll tt.
<br />
<br />So"", of tn." htstoric vege.~ation in the flood platn 11..:18 be~n dear~d for use
<br />
<br /><is pa~tlire dLld hay land. This lise, if no~ too ext~n3ive i8 beneftdal to
<br />
<br />~~rto"" kind. "f <o'U<lUfe hec"",,' tt pro"ide. "ddlU()n,~1 )",hHat nteh"..
<br />
<br />These agrtcult'ual use." pro'ltM f<l< Itlte<spersion of habtt~t typ~" ilnd
<br />
<br />create the "d~e-"ff~a ~eemlni:ly l>r~ferred by "","y forms of ",Udl1fe.
<br />
<br />B~""er pond., as ""U ,15 ,""n-T",de ponds, .ire fou"d t:', the fLo(}d pbln and
<br />
<br />t~cr to" j1c':lVld" "dji~i"""l ""hl",c v:Jrlety. T"e." ",,,thnd ..r",.," ""l'p"rt
<br />
<br />.<~""t Ie v",g"t.~tlll'1, Ill" Lu,ling ".ltt" l Ls ""d b'Llrusilc". ,lnd provedc "'..'t"rf",,)
<br />
<br />""d "1L<>l'ehUd i",~lt:.L. L1 ~h~ ".'per e"J of ~;L" ."~uJy ~<~~ ~x.,,~lL,,"~
<br />
<br />w
<br />
|