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<br />....
<br />0:>
<br />l\:o
<br />o
<br />
<br />permanently de~lTo} the agfl.:uhural
<br />producti\ it} of the land
<br />Go\ernme-n1 agt'ncie~ will be able 10
<br />U'>e the maps 10 anllcipate Ii'll' extent and
<br />degrC"C' of future salinH~' problems and
<br />formulate poliq
<br />Land use plannen "ill be able 10 rind
<br />besl hx:atiom for imJustrlal. 'ommef~laJ.
<br />and housinp: need., IO'31ing lhe~t" on
<br />more salt prone area..
<br />Rhoades de\eloped the measurmg
<br />probe ... hlf;:h comains tour elct:trodes, An
<br />electri,al curf\:nt flo...., through the soil-
<br />passing bel...t:en the OUI\HJc pair 01
<br />de':lrodes. A meter mdl<,:al('\ ho.... much
<br />resistance the l'Urrent now encoumcr\-a
<br />direct indK3lion of \aJinJly [.1.:1'1 poke 01
<br />the probe mt:a,ures a soil sample roughly
<br />6 Inches deep and 6 in.:he\ in diarn<:ler
<br />Rhoades IS abo u'In!,l a ,ahnil}
<br />monitor thai ma}' ma"e mea';urement\
<br />even easier. It con'l~l~ of a generator that
<br />produ..:e~ an e1e~-tromagnetl~ f,eJd that
<br />emanates In,i\ibly trom a 3-foot-long
<br />bar, Thl~ field c'au~e\ <tn electric current
<br />no.... ....lIhin the \oil that is proponional
<br />to ~ahnJly. With ~u.;h de..:tronlc
<br />measunng de~lCe~, Rhoade~ determines
<br />ho... salty the \oil 1\. As soil ~alt
<br />increases, the ~econdary (urrent no...
<br />incteases proportionally.
<br />"I don't e,en ha'e!O lay the monitor
<br />on the \oil It gi~'es a ..:orreCl reading
<br />....hen ~u\pended at hip height And by
<br />rotallng the magnellc field. I can
<br />d<:termlne ..alinlt~ <It \pe..:rfi..: depth, ..
<br />"The ideal mea\urmg de~l.;e mIght be
<br />some form of thl~ ekctromagnellc
<br />measurer. It i~ po~~lble. 10 pnnClple. !O
<br />mount it on an all-terrain 'ehlde or e'en
<br />~u\pend it from a lo.....nymg aIrcraft.
<br />Thl~ ....ould dramatically reduce the time
<br />and labor necJed for data COllC1.:llon,"
<br />Rhoade\ says.
<br />"We're fairly confident ....lth our
<br />pre~nt measuring de\ice, and computer
<br />program,. Our blgge\l challenge ....i11 be
<br />matching our data ....Ith e,act locatiom
<br />....here....e collect~d 11." ~ay, Rhoade" He
<br />en'ISlom ~omeday u'1Og portable
<br />"direcllon finders" ;;apable of rC'C'el'ing
<br />LORA~-type na'lgatlOnal radio bcilnH
<br />either dlrectl~ or relayed ,ia ~alellite
<br />stOll Ions. Su.;:h s~stems are u,ed
<br />commerdally to al,j O<.:eiln 'e"eb and
<br />
<br />dlH:raft in rou!lne na\l!!atlOn and 1lI
<br />locate them In emergencIes.
<br />
<br />Joinl Reclamation.SCS Price.
<br />San Rafael Rher!iJ Unil Slud~
<br />10 Prol't'ed
<br />Reclamallon and SCS (S'ljl
<br />Con~enatlon Senkel ha\e bt't"n studying
<br />lhe polentlal or a combln~ Ro:clamatlon.
<br />~CS plan for redu":lng 'alt loadmg to Ihl'
<br />Colorddo Ri'er. The plan ...ould be
<br />rre~~urile-d sprinkler irngallon combined
<br />wilh wdtermg trough, for h\e~to,:~
<br />Ihero:by eliminatmg ;,et'pag(' from
<br />\lOd...aler pond\.
<br />The mcr<:mentaJ cmt of the <:ombmed
<br />plan for Rdamation ....a' great('r than
<br />$100 per ton: (herelore, the informatIOn
<br />....~s pre<.o:nted to the Colorado Rl\er
<br />Ba'ln Salimty Conlrul Forum'~ \\'or~
<br />Group for their anah,\!, and
<br />le<:ommendalion.
<br />~, repon pro:pared for Ihe wor~ Group
<br />\ummari/ed the effort~ of SCS and
<br />Redamatlon and the co~b 3"o..:iated ....lth
<br />the;,e plans. The lotal cmts of the
<br />combmed plan ...a... appro\lmately )70
<br />per IOn uf salt remo\eJ, and the 4mllunt
<br />o! salt Ihat could be pre\cnted lrom
<br />entermg the ri\er sy\tem ....;1\ morelhan
<br />....lth ell her ot Ihe ;,cpalate plan~ The
<br />Wor~ (jIOUP, Iherefore. re;;Ommentled
<br />that Re.:lamallon dnll SCS wntinue ....nh
<br />the \tudle\ ot the .:ombmt'd plan
<br />
<br />Contract A",arded for Salinil~'
<br />nama~es Llpdate
<br />........ard of ;,'ontract "'3, made 10 June
<br />for updal10g the economi, \tudy made
<br />carller by .....lan P Klemman and F.
<br />Bruce Bro....n. Colorado RHt'r Salimh'-
<br />Economu' lmparlS on Af!f1('ultural.
<br />,\tUniC/pal. and IndUSlrII11 L'St.'rs m
<br />De<:ember 1~80,
<br />..... [kn'e-r lirm, .\tilli~en. Chapman
<br />Reo;eaH:h Group, In..:" ha~ been a....arde-d
<br />a \]\,month stud\ .;:ontra..:t to update-
<br />,alinlt~ damage~ In tho: mumClpal and
<br />indu,uial \eClor for the major ....aler
<br />U\eIS in the lo....er Colorado Rl'er BaSin.
<br />
<br />L
<br />
<br />W)oming Farmers fa"'or low-
<br />head Sprinkler Plan in Big
<br />Sand)' Rh'er Unit
<br />Al 3 publk m<<ting April 2. in Faron,
<br />Wyoming, the SCS (Soil Con\enation
<br />Senicel pre;,enled their so:!ccled Jow.head
<br />~prmkler plan 10 redu.;:e- \ahnity in Ihe
<br />Colorado Rh'er system. Although SCS
<br />doe~ nOI ha\e funding to implement the
<br />pldn al this tIme, they ....anled to
<br />do:to:rmme if 'iUffi.:ient support ....a'
<br />d.allable felt the- proposed plan to
<br />warrant completlng theIr report. If
<br />fundmg became a.ailable, the plan could
<br />then be Implemented.
<br />The local farmers generally fa\ored the
<br />SCS plan. An update of Reclamation
<br />a":ll\ lll<,'~ ....a' al\o provided to the group.
<br />The uptlate indudt"d (I) a brief
<br />e'planation or ponding leSH to delo:rmlOO:
<br />I.'anal and lateral st"o:page rates and 121
<br />olher fIeld aC!l\ille~ that are being
<br />..;onducted thIS spnng, summer, and fall
<br />
<br />
<br />nirt)' De\il Rh'er Unit Sludies
<br />Su~pended
<br />Advan..:e planning \tudies have been
<br />delayed al the reque~t or Ihe Colorado
<br />RI\o:r Ba\in Salim(y Control Forum. The
<br />inability 10 ,ecure water riiZhts from the
<br />Slate of Lilah ....as the Slated rea~on for
<br />the delay. All a,hance planning ....'ill be
<br />~u~pended until further notice.
<br />The rC'Commended plan ....a\ to collec!
<br />~;jlme ....ater by pumping Irom shaUo....
<br />....ells and then dispo~iniZ of the no....s by
<br />deep ....ell JOJt'<:llon.
<br />
<br />Report ,h'ailable from
<br />Consen'alion Foundation
<br />A report entitled Jhe ~all, Colorado
<br />ha,\ been published by the Conservation
<br />fuundalion and lhe John \tUlt In\titute.
<br />Cop'es are a\ailable by ....riling Lydia
<br />Ander\on. Sale~ \tanager, The
<br />Comenalion Foundallon, I~SS ~3rd
<br />Street .-..:\\". Wa~hJOgton, DC 20tB6 or by
<br />..:alling her a! I~021 ~93.48(~). The price
<br />rer paperback boo~ is S<,l~O plu~ SI.OO
<br />(S~.(() mmimum) for ,hipping and
<br />handling. Bul~ order dl'..:ounts are
<br />3'allable.
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