<br />5. SOURCES OF INFORMATION
<br />
<br />High' water marks haw ,been ite't ,at:pertinent,'iocaUons: throughout
<br />the flood"area. These-consist. o'f a,_properly-:,inscribed:1Iletal 'plate, or
<br />a permanent17 paiD-ted mark' anadescript:l.on.:2: The 'locations 'and devations
<br />of these' high:wa.1;er'marks'"have'been:'recordednmd'1I;re- on,file 'in the
<br />Omaha- Distric1; Office' of the.Corpsc of: Engineers-o:.' Only--lfm1ted 'di-itcharge
<br />data are avaHab-le as,of,the-time- ofpuhli"Catiorr :otthis ' report. The
<br />U. S~ 'Geo-logi-e&l- Sttrtey'-ts' curi-etrtly"engage:d"iu- 'a':si:udT'lead:l.ng to
<br />peak aiseharge.-ertimate!l' a.11d'flood"-hyUro8r9;phs-:e:t,''rici-iO'ilSo locations.
<br />The - restilts' 01"1:h18" study shotildbea:milllliliriir_-t;he'near-~:tut.ureand
<br />can'be . obtained 'throtigb;.;:.i;he., '''PW~ upriate', ot'fice"'Of' , -thelJeologi"Cal 'SUrvey
<br />or froin-the' annual.waters uppJ::y ''Pe;per: for::Moritan'a',1'or: thel964 water year.
<br />
<br />6,' ,', 'MAPS AND 'PH6TOORAPHS, ' "
<br />
<br />., .:'J ,',
<br />
<br />;-Inc:l'udecf-witlt 1:'his'-~ort: are -a,:genln'itL,lIt8p'oftbearell.,_ ariisohyetal
<br />map' of tiuhl1;orm area,:'andphetogl'sphsC' e:f\,-t;1Picai:.itll!lod. '8riddlllllage si tua~
<br />tions. ",'
<br />
<br />r! ,
<br />
<br />.IT.' DESCRIPTION ,OF, THE, AIlEA.
<br />
<br />7. LOCATION
<br />
<br />'a. The' flood imed'contigubuS,: areaL..1ocated':within the:JlIis:s.ouriRi ver
<br />Basin in Montana is roughly we....shaped;:.: ext.endingnorthwesteriy , and
<br />southwester-ly--fronl':.the- headwaters area-'of.Fort Peck -Reservoir to the
<br />Canadian border and--the Continental :lli vide; ,respecti ve17. ' The area
<br />involved covers all' or a' considerab-le portton 'of Glacier ,Toole, 'Pondera,
<br />Teton;'Choutes.u', Fergwr.' J'uditb-, Basin.-.-:Ca.scade~anfrLewis'll.lld'Clark
<br />Counties'. 'This' area camprrses:..py.o...iDiately',!!O 'percent" of-the-entire
<br />145, 736 llqtia:remile'~:re-arof' the 'State:' ef"Montana;'-"
<br />
<br />, - ...
<br />- '
<br />- "b; '1he:MissouriRivercdrain~~&um.s:t::........+"""lF8.ffectedby the
<br />J une19611 1'load" hr tliat-:pt7rtfoiroi":1:he::'i:rariu"l;rintrbe-t;ween- canyon ," Ferry
<br />Dur- on-,th'e'Ni'SS1:>'Ilrl' Ri-ver 'rrear:He-lelia:'~' tJ:1:e-' JIIo;a1;h' Qfthe Mari...- River
<br />near: T.OIII&'" 'l'Ire--maj-or tri'butary-stre-ams-lo=t;ed: 'j;n.this-areac are the
<br />- Slilith-River'a::trd-Be-l-t. Creek:b'oth 'rlghtban:k- trili>utarie-s-",cd' th-e' Dearborn,
<br />,Sun-li.ndMar:hsRi 'e'l,S ;--W'hich'a:ri~et't"~ iribu-taries''Of'the-'Missoilri
<br />River; ',TIte~dra:biage'areas -ot..tl1-e~eStie'a1mr'are gtTen--_1.rl-table 1.
<br />A mapshowing-thetributa171irain~ge'is presented--Qn-,plate1. '
<br />," '. " ... '. ," ..'
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<br />2
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