M.. R, Lewis nd Haro.d C. Schwalén

REPORT ON THE PROPOSED IMPROVEMENT
THE ST DAVID IRRIGATION SYSTEM
COCHISE COUNTY, ARIZONA
JANUARY, 1930
BY
M.. R, Lewis
AZ
q63 I 7
L6;7
nd Haro.d C. Schwalén
PI1OPOSEt
tz'duqtiqn
8t. Dav1
t
o
th
ke tbei
*44on
a Fxeriment
k-
LttQ4 and repo
L9iO
by
944to:i to t
I
da
criptopy
0
ni
cutir4. and
tion:
$a Fedr Watq
tri
1c
preir
;
j
e Courtty
oft
eor
cote:
L
ftenCe$ *$J,t:Qed
o
aboe
San
a
i
nioft
he nXted Statee Geo:oica1
Sen
7e& A1*on
, ,ibihed
() The
from gtudj
1p was..
*às&btiitte,
:,ed hrZest.n
4tflfl
aJ
ot. the
nubor o yae.r ag
.
er Wt?* was 4on uxid;
of Arizona
$oc
adm * t1
nited. Si&teø Bureau f $oU#j
ugieeriug foatur W. the
n4. ob8eratioiis ot he
tb
o
f
'bø
crtpt eport bø1teea to b'e. been; ,ptten, by
n unsige4
Met..
Ot
3) Th
tø
th pion&L '$iOt
sedge of oet
and Ls
the
W3
preP *&Ofl t 1hts repoxt..
der diseuastoii & tbi3
the
i1ciL1de
Ø
£1 and Curtis ditches i
tbe:
A fiL
se
V4%ry 4th&
..
the itpQ
ure*u oS oU
o
Usayte.
te* tepztmen4
partaent t
$OM oU the $oj 3i.rey
te Bni
ea
rjna
the sOutU
i the
e 8ün Pedro Rtr
JjJe7 iie$
Fe4e,a1
$tata
Q *QU
t
fl. i1
ti. 4ei Of
th
4a
1e1y 3
b*U1b &)OO *4 ;Ln S
.
siet4m o
se4
M this are*
St. 1itd tn L7V,
tound t obstør
The r
&i
e
Xrcs tk
eab
g.
heonde
ith !hiCk th
o
&. !!8U
tb
c
to theb
th 3ottthe'r.
ga
t
up
ø
31'G$
th
ie31ey tbout
ot w)2tCb
Qfl:
o'ug
1O!P 3t
eA
The
2
is iread rax&
ent iU be ?eq*ed to j
ø
buiiho
i4ttv
r t1ts
ø 4o rv$1*;
:Øtb trirte
t
8YitO
'n'd above s being
Anthony
as
po
tiae
te
d
y c1ay 10Am t
*a go4 a
O'
nl*
adctt$.o
0
dip4
Fnd. ViC
by
a
and
kbot Q p.
eeourv
nnuJ ra11
ot
as
ts 1ong,
&ya between
tr
&
'ow&ng 4
Le
dat4 given
e bi% £
probab1r t1t
&h bó tiiows
n a:sureci wata bupply better
nd 14g)aew te1
he
Zr
agri
coamittee
pal
.. t*dti
Q.e3ud4 ta
Peoommd tha*t
a ElM eth*te t
to
roMmand*t
&f
/4 b1*
etto
O buh
thic
hum,
3500
bei
.imatee are
k
iø partLeular
gateci
$tnhJ2g ôaap
u1ati
J:fl.
exce
the eap
pars
gat
pr
shoui4 be
a
if he
*&ofl$
4e
tural ad e
0
has
thri igaton. 4tohee Tho Iowa
3 Ictown a* tb Benson. 07 Jo*eae tcb Thts eyska ks* *
aowse
on.cretO
and i* thl*ø
th
Zzt
1tLOfl the
t
cos any hs4
Uon per idute, iA a
23
b
p
U 3ctja.
epbutappe
1t
tbe
ie*
te* *fO*
the *v ta period n the
,
I
*
ts
enson sy
ø4
*$
O
t
;U±Ø
Mt
*hw '.ow the
V: .tJ(.
12
S*:rt
om
i tBenson
abo
be St
4d rth
t*
t: *ft*'
er FLg. 2 *s te da1
fjoo
men It
des4
U moderate
£$ m i3sb
ud Augut) wh
L *ibe
4r*tt 1:h dro
0 dsaa and
M 4 4ø: dttoh. The mit 3
irrigat undex th1 iiystem
et th&
tiat oXten r
wili a)e
edeâ
water La
t
ti
crops. A per*snent beadin which
0! at8P houghQut %1e ysr i: the vital.
ot 1h .$t. Pai4 *osr&imft
p
'I
/
4
-
.
4
'1
.
i:
r
,'
1
fJ'
;?
I1
;,
:
,
A
fJ
:
:
r'
'i
't'
1':1
I4J!J, ,
,t1
,
$
i
I
Ii
'4
i,
:
.
:'
'
::
ir-
L
i'if
k'
F?': 144
4
t)&k4J't:
,
I'III
A&L
tI
'
itIi
'
;i!;,
a
.
ii
¶c
j
.'
,
:
!:,'
F;1I
'
'
[
,
r
'
L
___f___-
N
.J.
-
'?i
'
I/
'
¶V
4
FL
:
c-L:.:
r'
:i--.-:
bEAIl
:
Sh1
I
' JLr
-
u'L1I -'L1i
.1
'p'r
,
F
- --..-
a 1r
415
t
'
St
-
:
,;
''u't:
IJliit1
.
w
n
rr
__--_'---.____4
'
-
;::
I
:'
J
F
- .'
--
-
--
!
'
1
--
-7
I
:L
Q.-
-
.;.
.
1.,.
.-'f_.p(
,
-
'4:1.
'-
4.
_1
-=
:
r
Il
-4y
I
,
i
,
.JJ
r
b
%I
P\4.f11
'
I
r,
I
I
'
,
!
!
1
r
tr
'-
'
'
'
L
,'
:'
.
i
'
-
0
I
1I .
-'
$
I,
P1!
$2
:t_-U i
p'I
I
I
,
I
r
I.4
J'fj
D
jIJ
i:
1
,,
r
-
I -'ij
"
,
L
L 1,rr
-
.
1
I
':
-
'
L
.
;
1l
_J1
&:
,$
k
r
:
iJ
?
i
e11.
(
J
r
j
,
'b"
r
S
:?
-J
"
4
I
Eric
: !j1:1 , 0
.
fJiiJ
ii.1
' 4j
;
I4A r,.
7
E4J
t.
4
pi
.---
,ri::
; ::A
]
:
t: rlr'
i9}i.A-
.ff:i
b1t
.
'?J i'
LI
hi- I
r
Li.,;cri
UI
'
*:[
.:.;-
I-i
1b)r
:
1;:
1'
i;L ik
t_h!
1m
p ?''-
cyrr
i.;;:z! r : ;,.
\'
N
(
.
U
-.
L
/
6
,
r
,
tL
tc
.
t 4i
rs
tebe 19
$i1i4 Pd.1..e opar wa3
ennt1 WJPp
U
f
by
*oath eS
uper end t th
ite has iii.
4
Ô 4aed U
'ab 14 exi,.ii
t4*df
'
1
.
ditte
.
4!L
Xt
t
1:
Gilt
1. z&na
aftd
*rØ:age.
pt1 on
a4
p1.es *. *nd
v&te4 area
nd
a;i* eor4tti*A.
red to repre
iM tine
s
;a.g- in
I
t.
t& 192
Ct4yat
evoa]-
4
ytci
253
ctvae4
.Cz'óa. be
Pflous1y eu1ivated
ch 192i
av&d
4Y2&ted ar'eaga
?reviousiy cu1tiv
0$
iam bee
ad ttchea
S
Co*pany
1ib2A4 &rea
ci:
etcasio* f
a eStimted .t.t
O iOO acres mig
o4i
and
Lrigated. under hQtb astem,
0
th
a th
being t
rie4 tha any expeadi
te**
LgLt&
bøei
rk
the canal
tbi on thc
time: *u4 I
h lCtL3U7
th ai'e. to
be *ecur.d fro*
unc
s44 ba
L
thougir
b
*pp
Curt
Thvid
rp
'been
a
J3
btauea ne of t2u
*u%h
that
et t4s repoz
to
tku
tgattcn of
these
iLrbank a
ce
Cu
heading
3aton
thai gs
st
ox
i4
ne
I
tt at 60
1
ai
$
v* it .tou3
d
i
oun4
sand
w thmth'4 .tot but.
s:e
(, *
b
4z' *
At
ó11ct k
2 *eeó
p.
$eoor
eOdttte..
0
E
/
ANDAND
'/_i
'S
AS
DATEt
N
YAS'SD 55
'"
-
'S
C""6'
-
N
@
S,
U
70
N
A
7S
N
SEC 75
A
JL'C770)V AA
S/IETCH OF LOCATION
PRESENT ST DAVID CANAL I-lEADING
A tV D
CAL IC/lB OUTCROP ABOUT 2'/i MILES ABOVE
-SCALE '/Z'/Oo'
31. 0.LEw/s
U)
JAN /3 /930
AC. ,sCNwsqCef-(
tane
of' te
groud
the
$ edge Z$dg
e
Ei3
tic$4
x'th d
i4
the
;
d
.a
:øa
CCI)
MIç
,.
:0
a
0
.
'-p
-4,
h
L
11
:
I.1
II
II
I
I
:
I
Fk
,
'
?_'
;
1
4
I;r
i
I)
,J
I
'
I
.
I
,
J
i
f
F
.
-'
I(
'V
,!
r
.4 r
::
'
"Fl
t'
-
.
4.. .-'
I
F.'
FF
I
I
'
,
,
L
F
F
k
rI
F
L
f
,I
::'
1''
,
,F
.'.. ..
...
r-
I
F
Ii
'F
:
L
1
L
F
Fi.
Fl
I
F
,
rh
F
F,
-
,
F
F
,.
F(
4L
'
-
F
I
F
,I
Ill
.
r
,
L1
q
f
.t
.
4
I
I
I,.,
I
.
1!E
$j
.% tt'.F'
F!
.
'
f
';
, -
t4L
I r!
4r'
4j
.
'F, ,
,
.½
r
F
'
t
ht''
l
'P.i;
i
L
.
r
'
r
.1
r
3
S
.
F
,
F
\
F
:
'
'
b4
'
4k
\
F'
. ; -.
F
-
- -K
-.'-,;
.!i;F::I.
!Li tL
)
F4!IJLI
F.F
L
:r
i
,
:'
. '1i
èS"
F
FI
L
F
1F
.., v y
r$
flIJIR,k!P
:
'1E
"
F
q
I
IIIF.I
*
!Fr
I
','L
--
4':
:
:
''
4tii
:1',
£I
,
!
,L.4Jy F
Fl
.
I
i
s:,.'..a- ..'.ra"½
iLi
)r
F
ti
'
f:Tir
ri
I
I
1ii
,
F
:i
t';
':
#Iii
'!l,).r 4
U..
:ç#-1
t%
r-,,,,
'F
--
F
,
'L. ,
1:
;
4Fk
i,r
:d.-!4
F
1
I
Fi
4-.
l. _'
I..,
r
.
I'
Y
r
-,--,---...-.-----
F
4
/
-
-',-
r4I
;ç;
.
,-
#.
:
£
t;.4c
:
i.
--,--- I
2;:-
h
:J4":
1
-
-
-. -'-I
I
.
4.
;c
_fr
.
L
'
;4,-L
:1c ':
!j---;,l1
.
44
:
-
4
P
I'
'
it
$
p
fl
-..
--:1.
*?
El
,; :'
I
Ip
ffk:r
!t
I
.
$:.:'
'
-
;.
4
_a
:
- hf
-
.
1
V
']
-
.
£I,,_
L.
r
ii
.
fi.'
A
f
c
_,
>
-
- w::
ii
1_I
;,,
,
r
4
r*
!_P_
: ':-L.,
r
1_1L L...
------
.-
i____
A
:4--.
'
1.-,
g
1
'
1
.:
-:
I
',
'
.
'
-
fjr
'
r
Lr
-
' --
,
'r
:
'
-A
1l1._,1_' ]
A
b.*
-t
1
-'
I
oj
5p.41
). k0
$4
,+,, (
.
'
:
fl
vt, .4
4$
+' 0+'
r4
T
*JO
DIVERSION
DAMSITE
SAN PEDRO RIVER NEAR FAIREANK ARIZONA
IRRIGATION
DEPT. ARIZONA EXPERIMENT STATION
eatb ad roo
and th aid. ofriee anyfr
eted btwey
iI&
0
passing ihe pive ±L' during AQU
oncrti
t6 vould b.
c
tite o
*ugg$t.d erSin4 O.
ti
d te&*t avai1ab
by th
.e&t*tely deetroy i co*pe
rrtopped the earth tU. woil.d.
with:
constrot
on, 4
baøj ot M con tl
?*i theiie.]wa *as 'that not. *ø* than 20
and tea*
ca1eopló quastiorte1... e po3siLt it
any irge
together SO? 1ø *Ok: The
that at Od time th*
Wa3 *
chanrit to the east ot the cc o4crop on th. t id o
be mad availab1e. Other
8ei*a to b.
the. piesent w&yer chann
wa3 ex
ch*4 b.dr
of whic
óhown On th aap
r**e 4 flo
r
int egth eou.]4
crops evident .on the
s$Uway
large proportion at the
posed earth daa *u1
test pL
of 24 feet .r4 a .411o4 hols to a
&
of 52
p$rón by
in&t.:
-
wo'u
.
c1Qgo to Li tha
ea to Wti*t he
founded o
he
ti* ønd 4 the
Oring the eptUws4y
U i OYrflV et iaUa be b*at on an
conSolidateti Sodationj tou
that the pnt ciannel. &
would endanger the
r thea
best
tte i*
.asib1e
BabiUtti
the. Qld
hi
I*eou% it 3$ 4t that the earth da* *
rt4s
t the data if mul be the lower $
it would requtre the xcusion
!
ivsra1
is po&4t. but
ouand ot yards ot ro* on
cttr To. prssnt th .iv.' boe
*tting vow4 the daa ont* ..t ou4 require j1t *rneat rtvei' 2,
prct&on be az'rie4 i the ve to * 0onstdez'eble dietance The pro1.
&b
to .tre euftteien
piUwey o
em of conveying the, wet o* th* da* A' th rirat haU' &]e b
oud probably 'wean . a very long
' phon 4cm
the
AP *r17i*g,
VCr
s vt 414 and t.n stphordng &oroes th6
ALong
* beiw
Both itiethods ouU be
Qu1
.
penstr4 'with the 0er n$L*r':
the dtsarding ot this
*tjons
'"
ozended Con
fail
e* ?ig.
)"
exoeaei.
!or this eason it te pIble to lowa the ditob
the upper p
,ton a..' the Giu,ti d... teb .t
t t.
Bite of the propoaed new heading4 By aAkig the intake of the ditah *
e]evation 80 as shown n Fig S an oiiflo. weir
2,, ight
above h* prssent i'vr 'b.d. wifliev*
water floW intO
skitob.,
ig
t,h crest at l.tion
*
e.nal..
11 be
:
t Ls. beisved that a d**: *8
at thi* 3eotton.
the..
:
E thi
.&. earth. ez.t th
etio) 100 rufl$fl ro the high ground. to
3t tO th. rook
dge 4]3 be
Outcrop t
iit'e
The new headgate woui4
top
jtj.
tie4 ito this ei1k*izn? a*
the ditch through ft
The
o this plan im zost open. to quest
mt n. yhich the
is on the eptUway capa4ty for maw .'flood.. 'rom evidence on the
ground .it 'Oiss ee'air. th*t yeT ttt1e it any watD pau. '.rougb the
gé4 .
£1ood. The.
vatton. 90 *aè of the. present óhannei uri..g... th
en
channel.
through weh the 'good pas
26
at elevation 74, Th Oross-i'Ootinl. arat
apparentl7 isis thsr 2000
Ev.
jujiuiiuuuiuiuuuiuuiuuuuuuuuuiuuuiui
IIIUIIIJIIIIIHIIIIIIIIIIIIIIHIIIIIII
I1100IOIllUhIIIIIIUhIIIIIHhIIIIü
IllllIOhIIIIIIIIIIIIIllIOIIIIUhIIIll
IIIIIIIIIIIIOIIIIHIIIHIIIIIIIIIIIIII
IIIIII0II1IHlII1I0IIIIIIIlIII1IIIII iiiiiiiiouiiaiiiiriiiii;iiiioiuiiiiii ill IIHIIHIOIIIIIIIIIIUHIIOIIIIIIIUHIIOIIIIII IHUIU
11111111111 IIIIIIIllIllhIIIIIIIIIll!u
101111101 IIlHIHllI0IIHHhIlII
IIIHIIIIIIIIIIIIIIIOIIIIIIIIHIIIIII
IuhIIIIIIIlOhIlIIIllIlIllIluI011II
IIIIIIIIOIIIIIIIIIIIIIHWI 11111111
iuiiuiuiiiooioiunuu 111111;! llhllHlIIIIIIIII1Il1lI0IIII1III11lIlOhlII lI11IIIIIIII0IUhIIIIIIIIl1II1IIIHIIII1lllIlll 11111111
IlIlIIIIIIIIIIIHIIlIIIlIIIIllUIlll
llIIIHhIlIIII0hIIlIlIII0hI11luhIl [011111 IHhlIlIHII1IlIIlI1l11hI0lI1'lIIIl10I0I1lllhI 11111111
III1IIlIIlIIIIIIIIIIllIIIIIIIIHhlIII1
IIllllhI1llIllI0IlllIIIIIII 11011111
IIIIIIIIIOIIIIIHIIIIIIIIII 1001111
IlIlIlIIIll11IIIIIIlII0I1IIIIllllH
llIlIIlulIIIIlIIllIHhII1IllIIIIIII
lIllhlIllhIlllIIIIlIUhlIllIlIIIIIlIlI
IHOIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII I1lIIIIIIIIIIIIIIII!IIII1I11II1I111IIIIIIlll0IlI111hlIU11hIIHhIh1IIU1lIIllIIIIIlI11IIII
IlllllllIIIlIlllIIlllllllIIIllIlIIl1Il
IIIIIll1llIIllIIIIIlI0II1llIIIIlII1
lIIIIIlIIIIIlIIllh1lIIIlIllI1IIIIIIl
IIlIIIIlIIIIIIIllhIIIIIIIIIIIIIlIIl1II
1111111111111111111111111101111111111
IlIIIIlIII0lIllhIIlIIlIIllIIIIIIlIIII
Ill1IIIIlIIIIIIUhIII IIlIIIIIIIIIll
IIIIIIIl1I0II0IlIIl IIIIIIIIIIIllI l01IIlIIIIIII!III1IHIllIIIIIiIIIIIIIIIIlIIIIIIIIIIIIl 1IIlIIIlIIIIIIIlIIlI1LIII0lII111IIlI11hIIIl1I
II1IllIIIII1lIlI1IIllIIIIIIIlIIIIIIIIl IIIIIlIIlI11IhI1IIl1IIIIP!ilII0I1IIIIIIIIIlIIl 1111111 IIHIIIlIIIIIIlIlIIIll1I11IIIIIIIIl11hIIIIIOhI
IIIIIIIIIIIIUIIIIIIIIIIIIIIIIIIHIIII
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIHIIIH
lIIlIIIIIIlIIIlIIlIIIlIIIlIlIIIIIIII
0hIIlI1IlIIIIIIIl1IIIIIIII1IIIIUII0
I IIIIIIIIIIIIlIIIIIIIIIIIIIlllIHI0I llIIIIIIllI1I!ilhIIIIIIIIIIIIIIIlI lHhIlIIIIIlI1l11IlIlI1IIIIIHhIIIIIIIIIIlI0hIIIIlIlIIIIIIIIIIIIllhIlII
I IIIIIlIIIIIIII1IIIIIIII0IIIIIIIIIi!
1111111111111111111111111111111111115t' liii JPU, mU IiiiIUUhUiuuUUhUUiiiIUUUiiUiiUiR IlIIIIIIIIIIIlIIIIIIIlIlIIIIIIIllIIIIIIIIIIIIIIIIIIIIIIHhIIII
uiiuiuiuuuuuuiiiuiuiuuiiiiiiiuiuuuii:
JIIIIlIIuhlIIIuIIllIuhIIIIIIIIIIluI
lIIlIIlIl1IIIIIIIIIIIIIIII 1IIIIIIlI IIPIlIIIUIIIllIIIIIlIIIIIIIIIIIIIllhIIIIIIIIIII IlII1IlI0IIIIlII11I IIIIIIIJIIIIIIIIIIIHIIIIIIIIIIIIID
IIllhIlIIIlllIHIIIIlIIIII 11111111111 IIII1Il1IIlIllIIlIlIIIII0lIIUIIIlIIIIIlllIII1IIIIIIIUIH1IlIIIII IIIIIIIIIIIIIIIIIIIHIHIIIIIIIIIIII
IIIIIIII11IIl1I1UlIIIlIlIlI1Hh1V!
iiooiiioiiiiiiiiiiiiiiiiiiiaiiu
IIIIlIHIIIiIIIIIlIIIIlIIi!IIIlIl1
III1iIIl11I0hlII1IIIlIlIilIIiIIIIII
I11h1lHIIII11lIIIlIIlI11H1IIIlIIl11hII10IIIl0I0HIII11IHhIII1II0HhIlIlll111IIIHhIIII0IIIIII11hIi
DvErzsoN DAri
ri
'
U
U
5T. DAVIQCV12T15 DITCFIt3
CocHISE Co.
5CALe--J
:
U
!oo
Ft:bRuAR'd93O
I
I
1
C
4O
U
U
135
U
E,ccivote *o
eIevatort°
90
head Sake
CLIrfj5 'C,i
U
F
U
l:aI4-L cmbankrnent to e kvaf
lOUD.,
wci on ,t()) ., Z iu t
U
00
hi
"
Desicrted by# Mr. Lewis
TrQcedby '- N.L.Peck
.
In
a
9
n
Fl
I,
'I
Fl
U
a
0
I
r
0rsI1i+j
Ljb
1#IiU
J_1uldJ
J--
Ia
:1
a
11
a
a
0
(
01
'
LI1
LI
GIL
a
I
:1 0
C
a
01 pjj%ø10
I rI],
UI
IL
,
?
1
I
I
&
ut
LI
L
0
a
1e
Lo
du:t
1C
II
C
I
ILr,L
r
I
Ll
F
U
IL
UI
I
IL
a
C
5CALè
"A
IL
I]
JUl
1
C
_______
.
Aii±.
a
n°°t
'a
.---;---------------- 1
11
I
IL
r,
-IL
'
-
Or-
irt
4I
:
C
.1
r-
-
Clu
u
'LI
I!
I
I
CA
IL
I
a
10
1:
ILo:
ILL
I
.
I
I
LII
IL
II1
IL
1
F:'
-
0]
IL
I
L.
I
h
ClbL
apron "i' a
ui;ctk
0I
C
01
I
'
F
ILIL
,
-
,,
UI
I
\
bed
I
d4iiI,
_.d= =
1iB
DID
I
a
LI
C
F
flu
tqh
IL
Feek1.
1iadd ihr
H
Designed by '- MR
' IJ!
Tiiaced
to C
L1
1tnq TheI 48' iIm 9,4'C.t()CD
lfl
I
a
f
:O 1()%lqFIY 4'C..to CD U Itc rnL4;ing L!L1tIL
I
-'----
C
;.
Lll.IL
IL
1
14 5teel se1- pi.Iin9: 14
U
:1 ,rli(tfiiL n
' rE B UARYJ, 1930
I,
l'
0500
lF
_i_1 :
C
cyT$L P1TçHE5
For
Dvizsioii DAM
OIL
I
I
CocrilsE Cc
ILL 51 DAViD'S
IL;
LI
1JyI
I
m ornOunt
.
3het
itDE h reode d
Il
onçi et . in concrete
I
CJ
a
0I.th::
Stei
fl*ouchhtIes in sIee pi1n
!IlI
D
k
D
(i:ç
J,r,rL
I
Prb9be pC)SitC)fl (4
r(er b
Ir,
I
o4
.1
f
LI
1:
0
LI
U
U we isw* the4 * feet of s.a
t
pS&C *f th
flood
sectionai, sr
tak
the $e bed W&1: e'odsd durin
tb
tQ)t*Oed. during the
:
aas ttian .3
The mi!limum vieible ro5-ttonai area .f t1e hnn1 sfter th
orkø oud tÔLU be at thø
oap1et.ton .f th pzc.poee
present.
eid vouid be 1noreaee4 by about
annei. ivoia)4 contió the
'th*
$,$ed wo1$ te prob1e&tioa
*e poflt
Just what point.
øettto
aaaity
the pro-
The própoae3
the b3a$ of a flow )Jze at e vttorz 97 three feet i*low the
top of the earth .ebirkrnent an. .Ftre f*et
th tO of th r&
fl.
feet
O
the a1Lroad t tne we5t eid of the uz. th oapady oF the spiilway wol4
be frow 7Q
the. .8nsin
f
rui for wer havg
to oc,000
.
Thi: .esat je
3ueh
e. of
height rangn. frost eIght to so feet.
Aditedl7 there ie. o. .fato qf 3eFety for
ihat e $eptembera
. by the
f1,pçd greater thafl.
. gr*ter good would probabiy destroy the
al headgate). the eu'th fill at the .h.adgate., and nak a new hana.L
here the
flow
opoeod titeh 'would '11*. It thi3 should happenS
new ove
etr oLf the ty* proposed herein, fo the *SIIt Lyex' channel wo1d
hate to be biJ.lt
the ew benr&4 and a n
oaniL .alng t* expo$
roic
heyi&in
provides For the
hW4ie t th,e eaat4 .Ar of the other pro-.
n the river is ubje't to an eoual
trutio by an
flog ithout .a good a.
poe.d lana aU1nr For oonstrttotio
gt.er risk of
caoe For erma4t
nøtrutio 'there&fter4
øf Curtis Dtoh
If thi$. plan is adOted the thirtie dItoh. *Ui hare to be rebuilt
e lower grade or approxt*tely 6300 ft and e&.arged fro them or
to about the north end ot th. Eoq$.Ua Lan
rater
rant
.M thftt. point the
dropped to the p18Snt .St
the St. David *i'ea. i1
djt,oh, If the de**xd tp jand end the
tax' .*tipply ae round to warrant
it the Ourti* ditch ma be xtnded to cover additional
A
David.
I:
ltestJe to following thi QLd Curtia flteh would be to con-
tirne at a highex &evation and te
ó$er tA, keep the ditch in
].oaer to the edge ot the *ua
suitable g'ound and to make *oxø near1
permanent siphon insta11eona. Ariother
aaon fQZ proeiing this s
native La that t would cover o'e otr. <uxt&?
Egtjate4 Cosl$
Data ei
not
el
or a dose estina%e
t t, cst o
ropo6e4 inproeae*t, br that reaeon, th* rollowing estimate itu.*
contdere as only onghly representing the actual coat.
the
.3h
P1Ung
4aL, 90O0i **. 5#
)abbr
441500O
500090
p]1aøing
Oos*cret.
cu* yds1 at,
121,0
5
i4ntoing, stiø1
,16,Q0 0 At $
ExCavatjon
ZO2!id$ at 75#
liwey
Al 4O
3000
Q
('used j.n
artb elbaJent)
20GQO
,yd3
$25 90d400
'Cotgxts 25
6Q
32,400.00
itc
000,00
Kead-gate
z.caUon. or upper 6300 teet
4QOQ
yds ¶t 20#
Entegirg c1&toh ie1o. zn4
$,000o00
phofle
Tote
tftigeiiets 15
1).,50O.00
iO
*1j,20c.0
Giand ota1
$45,600.00
4nomiç :ak1t
he etimted CO't Qf $4OQ 4isttbUted over the UOQ :&'Ø5 of
land which h* been. irrigated. .*otm4..' to a tttle over 4i per acre. Zn
4istriet ha!iig the very long growing *e&son the 'reasonably good agri
cultural soi1 end the nest and sxes:t narkas cf the San PedroValley
tht* charge pe itere seems vei' moder*t.
under consideration are'
*e hae been oLnted. out the
roved and hav9 been trrtate
e
exit..ice
Faa*.
*1'
ho8.
hoses are builtj. roaa and
The: people LtlriAg on. ht rart* ae experienced
Ig'at.d agrcu1tur o't the region ni ar a particularly
home-Lcving
people. *l these e.ctors maó tha propos4 'iach eore fóasib)e than
ands at the
oâet per .sre
prPJeot taking .in r
.
On the other band, the 3ttlera in the area. haye been:. k
a
desperate fight against thø 4vr for many yeai's and. 'o$s
u'bia Dit
have had no water since $epteer, ]26,
or the re*so
oie ftnaneia],. help beyond the usual sources of credit probab]1y will h*
ne.ded to get the proposed
ou.
cOepet.d..
The :ty ha a 'long'
struggZ agrit ad.ree ctrcutance and *oi1d
.1!0L to be. 4*titie4. to .any .financ
A hea4ixg .tor the S
can be gr.,:.ted the*
David. ditch 'irh4Ii could be xpeøted to be
ate tn s aaor lOc. caa4nt be cn3tt'nc
a re&sonab:Le 4Q$t 4 the.
Ther
ta below the Cuti* .jte
ieøt $'te
is 'e on4thle. exe. o irr&gated lan u4er the rtis d'tob whch atist
- 23
be poytded with a* irrigation syate* if it ta n.
reasonably aafe &tveraion d* and heading can be b
to be ibamdoued.
A
t at a qost1 which
or all
seemS to be witbin the ic000*i limit of coat fact' the aroa.
lrea$ons the proposed dftrersicn daw and z'ecotstrwtton of the thirti a ditch
is re0oaiiflde4*
Locl ond1tions and the possibility of sec ring the *etti**nt of
ad i4$onaL lanO *uat govern the ex nsin r eloation of the (iirt&*.
ditch to eover sore land( The 'water supply for any new lsnda woa14 b
4ted t.o flood wte aa the low water iipp1y is not nore than rnifficLrn
for the lands already iated4
ry.
'rbs report it mad. by thø DiirLsio of Agricutural Engineering
Lte4. Sts D.pa:rtaent of Agriculture and. the irrigat&on. Department of
the 1Jiversity f Arizona in reaponea to s. '2 quest fPr i.esiatanoe by the
peopLe o
$
David Coehse Coimty, Atzox.
2. The t. David area
The.
ea in the valley ef the .San Pe4ro itver
o'un..ty *ae fti'at *e tIed
1877 anci
tiiL large
in he hand of the direCt 5iceeore of the eriy :sett1:,
sake every effort to
grOup :}io
t*n thefr bomes
4. The soi1 4iaatc and market conditions are very favorable
for a prosperouS agri ltural ø*mmunity0
About UQO aot'es of 1an Me e
trxigated in the pest rd
it Lw belied, Will again be ars,ed if a sure ste sLupply La 8eCUZ'ød,
The present St, Ltd System La unsa ta'tory becaui* it doet
Z4
o% make poetble tbe
whøn. there
t'r.
ds in the
$js
Septeabar, 1926, the
dttch has been,
t t cotsso
dtruotio of tb. ba4works r the flood of that month
Qfl aeeoim4 t the
A
of w*te during. any
fi
ater si
tjes wtier veD is not
eatisfactcxry
al.lr
area eei* to be evailabie
dtv.d above bY the
fioquiX as Cattle OoEpany
9.
se.. sho4 dunn April., Maya. and part
The water supply
of each year if the
te .eo*pany again dvert* water abo
as it
the pa.et
na&ubtfui if the cattle compay will ebuild tt
gation. work t4 the former extent but a definite cecisio on that point
lQ
Xt
$ riot been made.
11, 8vera3. alternative plans tor
d.touaed.
improven$n* of the system.
set .forti fer no4 reco*mending them,
A plan tote a semipermanent structure at the resen St
Dav14
is g1ver
overflow<
M
tb (urtt3
The
Tiavid
.f the flcting type is reoonunendd foi the
tch
irtia ditch L1l haive to be enlarged ta
.mj,y0
Thø cst of the r*omend
).6
the b*115 * U:OO 4We$ ó
e Lz be'ed o1
S
fl
is
f.
17,
The couunity probably 4l1 need aoae
beyond thø usual. sn'oes
credit nd $ees to be worthy ot Such heip
Mt extension of the trrt*ted area
od water oily
finanil assiStance
gbt be rntde on the ba
$art
k
'Oregon 2:ric,r
'?*ine4e ana r
z'"o
etiotL ½g
Co1iege
4lis1 Oegoz
ter of
i,rou
and in acordancø
of th
and th
t1 your
nnlet he ir
*e
X au sndLig
fie at the (htrti ditch,
ddition4
Z $n
.sewho.t
the epm'way apaoi øf the da
as tb' ,arro gorge between th t&1anc and tb.e *ailr'oad tracks below
tbe Ctirti $ite a4 feet that we should sugea4
poaibiUty of build
ink, a weir type dens across t)ø w
at the point where the qid outlet of
th aiphon was 1oc
A dam acras Itere wou'd ha'v. a crest length of
proximate1y 240 f.4 4rom rock o. one st4
on the other side.
would of urae necessitate
Iding I
*r more feet of 'dditionai.
and the expense f' the d at t a lo i* woi1d be considerably
acre,. The elimination of dtko I
the island ta the rook cliff on the
aast
the first side would, howóe, by e1iminte nd offset to ome
.
,xtent the differens n. 'o
Profe*ao
Saith is on
tc t. a.
.
Grands Valley and tD Phoenix
'L aiake inqe of the Indian ervies engineer 't
Florence as to itz4 their coet
re tn tb corutruction of the small
arid on bi way bask
&
laterals with e. a shor
I understand that they have two email shov'ee
working on l*terals An the C*ia Gand V
r and a tkr greater r)ortion
f their work will 'oon be comp1ed te ma)' be posibi1ity o.f c1eCur1n
ee of thesa smaU thovels for th
on the S Dav'id canal4 Iz ease
4he informa$1on Dr Smt aecute t Savor&le X ehaU te% yow know
*edietLy,
V
H,C. Schwa].
saoeiate Irrigation Epgineer
T'te &bve utter 's remived
to gjire
prt was tred and is ttached
I am in aeox'd.
sugge:attc
OOCUMENT
s THE PROPERT'
'Of TE
NU M
BE
DEPRTENT OF
L
'' ACt - +
AO1
AECVED
)t I ô.
. R Lewis
!NIT1D
TZS DE?ARTM)NT QF CUI4TURE
Pubiie BidS
mTiiQn o
222 ?oat Qfietce 3uild.thg
Agt4u*3 .Eng(neing.
.rke1sy, Califorj4.
April jt)
l91,o
r, thL P1umb,
St avid Canal, ppyj
ZQ
St,. Day4,
t
?1umh
Th
R, Lets of thi.
;ttahed report prepred by r.
sor H, C.. $waien of the niversity of
embodies the ieult ot' 1nvt&gtion3 ude by tben
Djvi1i ad Pi
Ari7on
iil
by L
.
L$Qr &rd
aui
Ewj
r ta tio
destaad that this iepot is 'tiot fjtLhed
details or actual detailed. aurvy l*ations. 'It is prud.
tiat y' will empiy or have a thib'le aetent engineer to
th detUls of the plank
You will
eport from th engineering side in that it dois not give
The aim shouU be to keei' the crest o the diversion tem
s lOw as possible It is probable, at so that t will be a
littla oi exiv to contru.ct a mew canal thn to eulge
the present one. I would auggest therefore, that e. survey for
the enal b& .tarted t the lands o Sint David &nd extend
'pstrearn to the pOint o. dIversion, taking tn as utuch of the
Curtis a land as is feasible without .'ain the 'dam at th.e 1. etd
9f th anal to toO' great heght.
plan as we have outlined thea csl fer a atber
mirtirnum amount Of
ah outlay rnd a rather znxirnu amot. of
-labor.. e feel that the. peopie of Saint David can 40 rnuch
of the .work and therefore by' this plan it will be possible
build the works and canal with
.
relatively
to
all Qijt1r.y oZ.
*oney
all your attention,
to the fact that 4he
wish
$.irt David District is a part,. as you' know, of the larger'..
Ch&rletou Ir'igati'en projat 'Before orgari%ing the Saint
Dvtd people into a district to build. the works outlined in
th enlosed reoort, it is mOst desirable and probably e.senti&
that they be reLtevo'd of their obligations to the Gbarlcsto
'Thi:
only be dane by pying off the. GbUgatons
Ditrict
t tb. Dsjt and
aying
Th*n *e people' t $*i.
di
COuld
th
ani a em
coapn, e some o
to
**wge
sed. thet
e.4*..
iay at an7 tiae, and
*ake,
hic Z ou1d itrongy
azid other iu$ wo1xed
ct
witu Lr.igatin
satt*. that t4 bet
to
1 gZedly an*
e
* rou TMy
w.
cLaughlin
oaite