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<br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />/ <br /> <br />/'7/' /.1 IV-l <br />. 5'46&'~> tu'd5i1 Watershed U T State <br />fJ,~;.ttI-J"-+IMr:'~y 7.P;n9<-tSi1~watershed <br />Su- 1/ '(;IUS :::e~ PSIAC - 1968 <br /> <br />. -r: c .. f/lj.f7 I <br />rl'-tZSe.'v ( f- r0~;? Condition <br />Nalle /L/J/l'J r8/.-/I1 <br />Date 6 -.,2 '/ - f IJ <br /> <br />i'\) <br />1\:.1 <br /> <br />65/i1l{-'1 <br /> <br />SEDIMENT YIELD FACTOR RATING <br /> <br /> SURFACE GEOLOGY SOILS CLIMATE RUNOFF TOPOGRAPHY <br /> (e) (b) (c) (d) (e) <br /> (10) (10) (10) (10) (20) <br />e. MariDe shales and te- a. Fine textured; e..i.. a. Storm. of several a. High peak nows per a. Steep upland slopes <br /> I.ted mudstones aDd I, di.peraed~ saUne- days' duration with unit area (in excess of 3(010) <br /> sUtstones alkaline; hlllh shrink- short periods of in- b. Larae volume of flow b. High relief; little or <br /> 9rvell characteristics tense rtinfall per unit area ftO floodplain de vel- <br /> b. Sin'lle train sUts and b. Frequetlt iatenae COD opneat <br /> fine sand. vective storms ~ <br /> ~/11}orJ~i.< c. Freeze..thaw occu.... 'V <br /> "",ce /'ldI.J j ..,w1' <br /> (5) (5) (5) y. (5) (10) <br />a. Rocle. of mecUwn So Medium textured soil Jl Storms of moderate a. Modeme peak nows a. Moderate upland <br /> hardnes. b. Occasional !'bek frag- 19 duration and intensity per unit area slopes (less than 20~.) <br />b. Moderately weathered menta ' b Infrequent convective b. Moderate volume of b. Moderate ran or flood. <br />c. Moderately tractured c. Caliche layers storms ~r yait area plain development <br /> )J '/ ,""Y//JIUI <br /> (0) (0) (0) rb..,c,9/ (0) (0) <br />.. Massive, hard torm. a. Hillh percentage ot 8. Humid climate with a. Low peak nows per .. Gentle upland slopes <br /> tions rock (ragment. raintaU of low inten- unit area (less than SOf.) <br /> b. Aggregated clays sity b. Low volume ot runoff b. Extensive alluvial <br /> c. Highin organic matter b. Precipitation in form per unit area plains <br /> ofano_ c. Rare runofr events <br /> c. Arid climate, low in- e <br /> Q ~ J. I~IJ tensity storms -;:; / !f A <br /> ""j.,.N $"/(,.. d. Arid climate; rare <br /> I ,- "c: conveC:tive storms <br />Factor I 0 Ii) -" r7 S- <br />value --- / <br /> GROUND COVER LAND USE UPLAND EROSION CHANNEL EROSION AND <br /> SEDIMENT TRANSPORT <br /> (I) (g) (h) (i) <br /> (10) (10) (2S) (2S) <br />Ground cover does I10t ea- 6~ore than 50'!. cultivated a. More than 50'7. of the a. Eroding banks continu- <br />ceed 20'!. b. :Almost all or area itttell- area characterized by rill ously or at frequent in- <br />a. Veletation spese; little - ~ sively grazed--- (}CC i aftd !lUlly or lands lide tervals with large depths <br /> or no litter c. All of area recently erosion ~ aftd 10110 now duratioft <br />b. No rock in surface soil burned b. Active beadcuts and de- <br /> /Jf'#~ wiiliJr ll!~ .r, ct'!j gradation in tributary <br /> , , ""c./ /; :'!!-C-- .' '.f> ,')- channels <br /> ,. J <br /> (0) (0) (10) (10) <br />Cover not exceediJ1g 40'1. a. Less than 25,;. cultivat~d a. About 25Of. of the "",a a. Moderate now depths I <br /> a. Noticeable Utter b. S~ or less recently characterized by rill and medium now duration <br />b. U trees present under- logged gully or landslide erosion with occasionally eroding <br /> story not welt developed. c. Less than 50'!. intensive- b. Wind erosion with depo- banks or bed <br />/t1 -( /' ly lP'ued sition in stream channels cAd"""'/.; I.!;: I <br /> .' ,.,. d. Ordinary road ODd other <br />o 1 \ to , . construction G</ ,h~ol <br />"r(- ~) (f 1'- i-' __ <br /> (-10) ( 10) (0) (0) <br /> a. Area completely protect.. a. No cultivation a. NO' apparent slins of a. Wide shaUow channels <br /> ed by veietatiOI1, rock b. No recent loggin&: erosion with nat gradients and <br /> fragmenta, Utter c. Low intensity grazinC short flow duration <br />b. Little opportunity for b. Channels in massive <br /> rainfaU to reach erodible rock, large boulders. or <br /> material (.J J !f-"~ .f "[ At / -.r ~.t"t well vegetated <br /> I,. (,-.,;. c. Artificially controlled <br /> \, ,.- '{/ channels <br />Factorr I .' 16 - - - <br /> .-'. ;,)...0 <br />value . , '" <br /> I Subtotal (a) - (II) 1-1 '7 SubtO'tal (h) - (i) J-j 5- I TOTAL..!.? -,),;;S <br /> RATING - - ~ -. - ac.ft.lsq. mi./yr. <br /> <br />"'''~ <br /> <br />o <br /> <br />(I"Slrucllons 0" rl!f/l!rSI!) <br /> <br />J10 . <br /> <br />&'? JIo. ~? If<- <br />OF lL. <br /> <br />SHEET <br /> <br />I <br />