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<br />State
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<br />l'X'.?eT~ ,Fa>>/'
<br />Ibme 7Ii~A-&/-111
<br />~ol/-f?O
<br />
<br />VA/IT @
<br />Condition
<br />
<br />.5;tCf;?S
<br />.5..4cEAS
<br />514:7 ,if/1d41 ~,,( ~c:~/~Rc?/fPSIAC
<br />
<br />Watershed
<br />
<br />Subwatersbed
<br />
<br />- 1968
<br />
<br />Date
<br />/Ju /V(}( j.dCOIY'.?1~-v-J ~4//-
<br />
<br /> 6.5,4;q -3 SEDIMENT YIELD FACTOR RATING Sel? PI< T;. "k>,vcl!~ At' I "'$(/J'.I)",o .~
<br /> SURF ACE GEOLOOY SOILS CLIMATE RUNOFF TOPOGRAPHY
<br /> (.) (b) (e) (d) (.l
<br /> (10) (10) (10) (10) (20)
<br />.. MariDe shales and tea .~ille textur"d; ...i. a. Stolml of several .. Hicb peak nows pet a. Steep upland slopes
<br /> l.ted mud.tolld .ad ., cliIIperaecl; ..UDe- day.' duration wilb uait are. (in excess of 30"fe)
<br /> SUtatOQ81 alkaliDe'~~i1Jr- abort periods of in. b. Larce volume of flow b. Higb reUef; 11ttle or
<br /> ...1r characteristics tens. raiDfa11 pet unit area no floodplain devel.
<br /> b. ~1DI1. Ifatn suts and b. FreqUent intena. con opment
<br /> IlIie landa veeti'IP. storms
<br /> c. Freeze-thaw occu....
<br /> rence
<br /> (5) (5) (5) (5) (10)
<br />.. Rocka of med.1W1l So Medium textured soU .. Storms 01 moderate a. Moderate peak 1I0Wll .. Moderate upland
<br /> hudne.. b. Occ..ional rbck frae'" duraUon IlftCl intensity peiaJm area slopes (less than 20~0)
<br />b. Moderately weathered ments b. lnfref:1\!ent .~tive b. Moderate volume of b. Moderate ran or flood.
<br />c. Moderately rractUJ'ed c. Caliche layers ~ flOW p.' urut area plain development
<br /> all
<br /> (0) 1;i,,'iI11i! ..Jfo~,'I),t/ (0) (0) (0) (0)
<br />a. Ma.sive, bard form.. a. Web percentage of a. Humid climate with .. Low peak nows pe' .. Gebtle upland slopes
<br /> UOII' rock Cragments rainf-.U of low inteD- ua.it area (less than 5"-0)
<br />;ii,,;{(';- . b. Aggregated clays sity b. Low volume of runoff b. Extensive alluvial
<br /> c. High in organic matter b. Preci.pitatioa. in form pet unit area plains .
<br /> p p "',,,/', 1'.-' .:. I...;id of snow c. Rare runoff event.s ....-
<br /> ',.' 'i Arid climate, low in- -<' S- ?"
<br /> , ., v c. YVI",7 -Ie
<br /> tensity storms
<br /> r.C I/:{:'_ (('.; d. Arid climate; ''''. V , .
<br /> F/F 1"."'-: v'/
<br /> convective storms \
<br />Factor' r /() t s (J
<br />value ,r-
<br /> GROUND COVER LAND USE UPLAND EROSION CHANNEL EROSION AND
<br /> SEDIMENT TRANSPORT
<br /> (0 (g) (b) (i)
<br /> (10) (10) (2S) (25)
<br />Ground cove!' doea not .a. .. More than 50'!. cultivated a. More tbOA 50'7. of the a. ErodinC bonks continu.
<br />ceed 20'1. b. Almost all of area inten.. area chara.cterized by rUl ously or .t frequent in-
<br />.. VeeetaUon spa,.e; Uttle aively grazed and cully or landslide tervals with large depths
<br /> or no Utter c. All of "'.. recetttly erosion and 10na: fiow duration
<br />b. No rock in surface soU bumed b. Active headcuts and de-
<br /> grad aUon in tributary
<br /> channels
<br /> (0) (0) (10) (10)
<br />Cover bot exceedinc 40'1. .. L... than 25,. cuItivUed .. About 25", of lb. ore. .. Moderate 1I0w depths I
<br /> a. Noticeable Utter b. 5()of. 0' Ie.. receutly charactC!ri.zed by rill and medium now duration
<br />b. U trees present unci..... 10iced gully or landslide erosion withoccasionaUy eroding
<br /> stoty not well developed c. Less than 50'1. intensive- b. Wind erosioo. with depo- banks or bed
<br /> ly crazed sition in stream. channels /"'..v ~ &tll/::,,~,,!, c;
<br /> ,I< d. Ordinary ,ood and other
<br />y; " ,#,5" construction <i!~r~ p4!fJ~
<br />~,!15';;!r / zit
<br />~\T (-10) (-10) (0) (0)
<br /> .. Area completely protect- a. No cultivation .. N., appareDl signs of .. Wide shallow channels
<br /> ed by vegetation, ,ock b. No recent locginc erosion with n.t aradients and
<br /> frap:aenta. Utter c. Low intensity craz:inC / /Yl'~'..<' ~J' short now duration
<br />b. Little opportunity fo, ) " ^. b. Channels In massive
<br /> rainfall to reach erodible '.' tJ !. ,/": -..~ ) '," '.~/ rock, large boulders, 0'
<br /> material ~) ! . " well vegetated
<br /> (,. '.' //'.:" ,.n . ~; , , ;. ! I '1- ;- c. ArtUie:ia11y controlled
<br /> , .. " channels
<br />F actor, I ' \ It Jj /U
<br />value /i' I'
<br /> I Subtotal (a) - <I) 1f5 Subtot.l (b) - (1) //j I :~~~NLG il = .:€f[.c.It.ls.. mi.ly"
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<br />SHEET JS OF / .f(
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