WSP00089

• File Number: 8200.766
• Description: Gunnison River General
• State: CO
• Basin: Gunnison
• Water Division: 4
• Date: 4/1/1940
• Author: USDA
• Title: Water Facilities Area Plan for North Fork of Gunnison River and Tributaries together with Surface and Tongue Creeks and Tributaries - Colorado
• Water Supply Pro - Doc Type: Report/Study

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The ~::::;01':)f0r e.,f the N':)l'U"" ~,.,]..1~ '.i.l'l.';~. is, ir )~i~'.rt, .:ti.~hl.y CO-I.;,!1.':'Y.-

but also lln:i2":rnrtci."lt ins'J.f2r l:}.:J it r'_;~c_ ccs tc' tl-:___, ~~;i.:'.tl;r 3u~.:)lic3 .)f

tho b3.sin.

The rbrth F:Jrk GuoIlisc'l1 r:\..:::1c.l-".'2.t.~':r~ '.-:ri'?;inc.to .)n th~ SJ.00c3 0f

the 1';-C:3t Elk ~ 'cUJ1~'lin.s 2.TiG. the F'ub~.... ..:'J"1c.l :J-,thrBci to r~'_~.:;cs. T~'lrou~:h-

out this u~~cr T)~)rtion O.L t110 ,lr\..;v. :''..1.~C LP':i.;'...:~~ur~j.s ::,.1' Prr.:-C:r ioriG.n ~:n8is3)

Po.lc,,:.zoic, Jur2.ssic E:nd Cret"-:-.GcGun for 1.2 tions ~nd intrtl.;:iions C)f

Tcrti,'lr,'\r ::':~:C:.

elf '-',:)1'0 i..'~~::,rt.o..nco, i!' ::'I..lc.:ti:)~ t~'J "'.;r::t0.:r Sl.ll".'r1ic:s, is the

~oolo:;y 01' th-.:.t p::..rl. 0.: tl10 E'.)rth :?'.)rJ~ 2..1'C,---. ~..;h::ch includes tho tribu.....

t;:;.ry 3trc.~: ',5 :-"ri2;il'~2t:L!l~ (IT'. Sr:;nd -.: (:.S;: ~.nd ~l:.:.-..;j.'''1;~ ::.~0uth~'::~~rd to tho

Ncrth Fcrk Ol1d Glmnison rivors.

These .'3tr,-~~1."::5 }-,2.v.:; their oricin on

the T2rtiJ.ry 1.1._'.331 t CC~~) PI' r;.:i".::nd :1'"(:8:: ;:nd (k'~ccnc Dv"(:r sov0rc.l r:csas

or ~~,latGaus ::"yine:: bct-;,rccn C',r',:nct ~-C:S3. 2.nc-;' t,hc .~~<~J.ll;:;.3 .)1' the }"':urtl1

Fork ::::.rlc r,un:::.is'Jn.

T~(; first 11::.~tG"",U3 b(.}..')-.'t t~~.;.; C~r~nd ~~U.5c.. csc.::'.r="'I....~cnt c-.rc cU:-l)Jcscd

l~iI'Gr.::.ly of V':0 '-:.:.s,:tch f-~1rn._~.t.i::')il cf t~:u lr)',',:r.::r E:::conc ~i;~.")och.

Tho GCC-

end sori'Js of r:'-.;so.3 2.r(: rC~""J1;-'nt...:l ;11~tco.us cccl~Qscd cf t~l(: shalL.:s am

S2.!.1dst'~ncs of t1~e '~:'::s~'.vcrcl(:'. ~~cr-1-2..ti'..::n (U'l":)cr Crct:_'.C(~'J'J.s).. B0t-:,'i".;cn

.

t.te .' I2s2..ve:rdc ':~0.s.:::'S Cl!1d the

. .. -] tL 1.
~l"".1.r: rl vur V~'..'_ ...:.~.~s 2''::1'(: __TO.s

.:1. s.,Jrios of

dissected l::-rr 1.:J.nd :.:030.8 or iX;DC:lo':':S y'ihich C1.l'C' ~'rl";::'.rl.l;{ c']~l.~l:jS..-..;:l of

the ?'3nCJS s11c.1c5 (U~:E:,..r Crct~c0:JllS). In t1"'!s i:'.'::(:di:"".tc v:::.lleys ')1 t:1C

North F'or!.( ilnd :1.........in GunnisJn, 1J-:..:t1;iCU1 t::o l,""!Quths :;:t L'::1':Jux OJid Curr2nt

crecks, t:1C:rt..:. <:ri' cz:r-vsur(:s c:f ~D.k-..tn. s;:~n(l.st';)nc (U;,:':r:0r Cretacc;-.lQs) 2nd

r 'Jrri son (Jurassic) sr_21u:J. Hcccnt L'.11uvi.::ll d0~,)SltS .'l1'e !"Jros._:mt in