when il does nears QUANMS have been used
lhe Middle pass ioreonnil-ies lo lap aoniiers [Finn

whim areas were ion-sled, unyared, uncuhwiled
.al lashed she hard payernenls oi loads and settle»
lilue run—on oreurred and lhluughflnw in soils
sirearns (lowing. Deseslliied aseas lad: shese

lerlslles, and WI: need in mknrde in she
“mlnglcal syele lo slore,l lrsale, and eonyesi
males lo vegeialive 5m|h— n shori, lo ereole soil
up lo aasrsi tones maznmmn.

 

 

mmw'loN
minim“ oi wales and she osne ialsen lo lniillsals Ls
moi rain iln hoursi

- 11—7 min/hr minlmum ln sands and dusl iloessi
2-3 hours.

. 4»! inrn/hs minimum in elayeloarrss iszil hours,
at

- I rnnl/lls in a|kalme swelling elays 2i hours.

This hasqlrile a iew ilnpllralions ios us, ios ilwr ean
spread nenisal or acidlr sands aoous 0,5 in deep as
more aver alkaline slay pans, lhen we have an exoellenl
sosiase lo illsl lnirllsale and lhen hold sarn, and
soroequenlly a good porden or lree silo, on whieh we
eansiore up lo i moi wares ios lung periods. Thlselled
oeeurs namially as she disdurge end oi some guHu-s or
anyons. ’

Annlhe‘r way lo ichwve llus is lo open dwp swales rn
a||<allnr soils in iioru oi sands and gravels on lhe move.
and lei lhesn ml in many areas, people hare lwllh pleas
labour) hnrred layers oi slay, plaslls, lhlel solloidal
green malles lglzyl and las or laser under lhe deep
sands oi lhers gliders; on mkbmadssnle, dnlmsc sins
are loll Every Ion—2m in in shore syslems ll is ohvrous
ihal we rised so hold wales lur a day or more ids u so
sank Il| lo soils

SLOPE STABILLSATION FOR [NFILTRATION
splniier or polmpmhqu grasses help so slahilise
slopes and lnerease lniillsalion, [arming muss-slop:
sand daols as lhey 23!, the normally simulas lossoels
iorrn breals open lo crease an open risen-l lls horns
uphill Delsrius iosms deeper sandy suhole hulk:
oelund lhese lunulale dumps, riieeliyely eroaline ll
awale, Burning dlsooys lhrs oiled and allims sudden
xlnpe erosroil lo oeeur

However, we earl crease suzh inirlllalion aids as
swales, wads dalns. levelled galdms, and soallagl- pris
oi lheso, lhv: smair ls moss easily (mind on a large
scale, our wadl dams may also wnsls well ios [ml iood
ioresls; neuhes are a lnniole ii some oasis niaehinery ’5
available, in sold deserls. lussoeh grosses and mosses
prrfum lhe same film" ios unsialale iosll slop-s and
soil ilows, and erosseslope Veiiyes grass lines on
eonlour gmlily asslsl wales inilllsaslon and slope
aalnlily.

FLODDWATER HAllvanc

Abariginal Auslrallans (Sleyenson, imi made
earlhwall noodwaser darns lo rnslesse lerum gnu:
and lheis wadi as did lhe I’Ipago and neighbouring
gmnps in lhe Sonosa mglulls oi rile USA (Nabham,
Wm.

lhe lanes gully: worlled on rim flmdrphim and
dollare deposiis as lhc mmLh oi wadis. Naoharn noles
lhe iniesesuns iall llial alihouph surnrner slorslis hung
«Lam oi wales, llroy add only lsv. oi lhe NIH)“ lo
snainsrream soseoorrs Mosl oi lhe run—o“ ls loeallsed
ln miennillenl sirearns, and only ayailalole ior loeal
headwales agnulllum. Abmfl a sin oi sain is needed so
Ellie useiul mm“. m a salshmenl area m7 limes
lhe area oi ilelds. Hardy erops suell as mlghum are
plodueed wuh run-on only 4 limes lhal oi lho iield.

Mung lhe Colorado lilies, floodplain iirlda were also
eonslrneled ios rnaior iloods Tedlmques roves [Elm
posary oasisis, irsipalion canals, and iield houndar-ies oi
ssone and easih relniossed wiih posis, orush. and
vegcfilion. named and wild or weed spears are grown
wgdkwrisampmnplzxavu4hamlcsperfleld
The syshern is pass oi lhal lllirrnased in Figure mo,
and needs mlninlal numgemenL

As headwaler slieams eoalesee and enles broad
vallzy syslerns flowing oils oi lhe 111136,th lalalded
nyess idry inosl oi lhe yeasl break our .eross eounlry,
dmpping sill as rhey do so, and killing lines oi organic
muleh ai lheis highwakv level This isnsluie 0! seed,
max-luv, twigs, rrrollnos, and debris is oreellonl garden
nlalerlal and em he lsapyed uslng a seoueme oi sinus
smop lures (figure moi ios use in galdms

Whele lhe land hooded is ilallrsh, a 'gndelmn' oi
low hanks loops lhe iloodwales and sills serlled and
absorbed slleh grids need oanlo only n54 rn Ingh,
and lhose are besl siahliised by slone on lhe upsliearn
side, msmck glasses or laugh low shrubs, |lv9>ael
shrlss and hnrrm os an he made oi heavy roell walk
isom lhe olairl river lied Such syslems ln Papagn
lndian areas in lain high levels oi lhe inaios plans
nulritnlsr and were lhe hasls sii lhe sieh Nilolis
will".

When and as she slves iloods. iields oi rnlllel,
mhum and legumes ran he hioadeasi sown inso lhe
wel sill, and iales headed as slosed my ruslhes away
irorn lhe maln siream, oroodes sleep dykes will hold
waiess ln narrower and deeper ehannels ios nee erops,
and she llees should ovesshade lhe deep aosospiion
swoies so dweloped,

BRMDED mums

A dose ssuoly oi bfllding paileols in slsearrls, and in lhe
assoelaled 'ngI' areas oi Vegan-ion, shuwlng up as
darker areas on a hlasls and while pholo, reveals lllal
their is an inverse ielalionship helween lhe land areas
welsed or salusased and lhe shannel widsh, 5min
rnulslple ssrearns ploduee rnrreh Iargu wened areas
lhan simple main channels iriause 11.3mm. Th5
susgzsls an is yes unisled slsalegy whese iln dry

349