Su
Dagendivrun Duandmebe Proan In everedthe Thana
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mmary
ams are classneration, recrversion into noffs, ground
uring extraordd infrastructueteorologicalgenerated by
oper monitoroperation po
this article, ents and on sduced the rise dam.
e operation oalysed.
eywords: suxtraordinary k, CTOOH (
ffairs, Conagu
D
G
Head
Ma
sified based reation, fish ditches, can
dwater rechar
dinary hydroure located d, hydrologicay a sudden di
ring enables olicy in accor
the policy storage levelsk of damage
of the Cajon
urplus workHigh Water
(Technical Cua), hydrolog
Dam
RoGeneral Dire
Dr. VíctDe
Ód of Hydraul
Hanager of Su
on their usefarming, etc
nals or other rge, sedimen
ometeorologidownstream al and hydraischarge or d
adequate anrdance with
implementeds managemee to the popu
de Peña dam
k, design fr Levels), Mi
Committee ofgical forecas
Mana
oberto Ramírector, Nation
tor Hugo Alceputy Technic
Óscar Sánchelic Engineeri
oracio Rubio
urface Waters
e under 3 typc.), diversion
conveyancent control, etc
ical events, ito maintain
aulic forecastdam failure.
nd timely dethe evolution
d by the Naent of the couulation and i
m in Jalisco
flood, OHWinimum Watf Hydraulic Wst, volume, sa
agemeCajo
rez de la Parral Water Com
cocer Yamancal Director
z Montufaring and Elect
o Gutiérrez s and River E
pes: storage n (to provide e systems) anc.).
it is importana permanent
t scenarios in
ecision-makinn of the reser
ational Wateuntry's dams infrastructure
during Hurri
WL (Ordinater Level OpWorks Operaafety, model
ent inon de Peña D
ra mmission
naka
tromechanic
Engineering
(for water suthe hydraulind regulatio
nt for the saft surveillancn order to red
ng on storagrvoir and rain
er Commissiis describede located do
icane Patrici
ry High Wperation (MWation), SGTlling.
n MexDam, Jalisc
s
upply, irrigaic load requirn (to retard
fety of dams,e on the climduce the risk
ge managemnfall forecas
ion to monit. Its implemewnstream, a
a in 2015 is
Water LevelWLO), opera
(Division fo
xico co State
ation, powerred for theirstormwater
, populationmatological,ks that could
ment throught.
tor weatherentation has
as well as to
particularly
ls), EHWLating policy,or Technical
Dam M
Damin MCajon d
Objectiv
Assessingmanagemorder to infrastrucand presethe commgeneratio
Introduc
The Natithrough authority severe wbasins, chactions to In order storage leare recostations aand oceamonitored This allopotential could rapreservoir.This is ddeterminicontrol sreducing to the popdefining controlledalerts to t
Backgrou
In Mexicincluding
Management in
m MaMexicde Peña Dam
e
g the importment of stora
prevent damcture and comerve as muchmitments on
on or other use
ction
ional Water the Technicato monitor an
weather evenhannels and so mitigate thei
to meet thisevels in the 20
orded; informand 600 hydran water temd.
ows determiniformation of
pidly increas. done by evaluing the disctructures anddam failure r
pulation and ithe operation
d discharges the population
und
o, policy mang reservoirs i
n Mexico
anagemco m, Jalisco St
tance of the age dams in mage to their mmunities livih as possible
drinking wes.
Commission al Division nd assess the
nts that maystorage dams,ir negative eff
s objective, t05 major dam
mation from rometric statiomperature an
ing in a timef an extraordie the volume
uating expectcharge througd surplus worrisks and previnfrastructure n policy to c
and issue n.
nagement of Hs dictated by
ment
tate
operation athe country structures, a
ing downstreastorage to me
water, irrigatio
(CONAGUA(SGT) has tdevelopment
y influence t and impleme
fects.
the variation ms in the count
1,000 weathons is gatherend weather a
ely manner, tinary flood the stored in t
ted inflows agh opening rks. This allowventing damadownstream,
carry out timeearly warnin
Hydraulic Wory the Technic
and in
and am eet on,
A), the of
the ent
of try her ed; are
the hat the
and of
ws age by ely ngs
rks cal
C(Ccokn Vevdathde Inprevinthcacairrre Thteov Hinduhuer SGpochdithflo SGthin
H
FrinfaTa20
ommittee oCTOOH), whomposed of nowledge.
Various scenarvents and theams in the couhe most appecision-makin
n order to surovides evidevolution; hydnputs of 2, 2hrough continapacity downsauses no damrigation sche
equirements of
his Committemperature. Nver 27° C.
Hurricane season the Atlantic uring this purricanes generratic trajector
GT has reviewolicies of thehanging the ischarges in ohe "steps" belooodwaters we
GT steps up ithe case of Huntense hurrican
Hurricane Pat
rom Septembn the Pacific reavourable conable 1. This 015.
of Hydraulichich is a m
experts in
rios on the eir potential iuntry are analypropriate co
ng on operatio
upport this ence, such adrological fore25, 50, 75 annuity equatiostream of dam
mage, water voemes, drinkinf the national
tee also keepNormally, hur
on in the Paci1 June, both
eriod monitoerally evolve ries.
wed over rece 50 dams t"abrupt" extr
order to reducow OHWL weere revised to u
ts efforts durinurricane Patrine in history.
tricia
er 2014 to Megion tempera
nditions for hsituation wo
c Works multidisciplinan different
evolution ofimpact on strysed in the CTllegial and n of dams.
decision-maks: record of ecast of resend 98% of oon modellingms, whose watolumes extracng water deelectricity sys
ps track of rricanes get t
ific begins 15h ending 30 Noring is incr
dramatically
ent years the that have sucractions for
ce damage dowere removed aupdate protoc
ng weather evicia in 2015,
March 2016 anature occurredhurricane devrsened during
1
Operation ary group areas of
f weather reams and TOOH for
technical
ing, SGT reservoir
rvoirs for occurrence , channel
ter volume cted under emand or stem.
seawater their start
5 May and November; reased as and with
operating ch policy, smoothed
wnstream; and design ols.
vents as in the most
n anomaly d, creating velopment, g October
Page 2
Date
Sep 14 Oct 14 Nov 14 Dec 14 Jan 15 Feb 15 Mar 15 April 15 May 15 June 15
T
Hurricaneintense tWestern winds of
OriginatinGulf of Twas firstOctober. conditionOctober, hurricane
At first itKenna anOctober hurricaneintense hu Hurricane
Patricia
Linda
Kenna
Odile
Table 2. Th
It was corecorded forecasteddamages,
Anomaly Temp.
0.5 0.5 0.9 0.8 0.5 0.6 0.6 0.8 1.0 1.3
Table 1. Anomaly
e Patricia catropical cycl
Hemisphere 346 km/h.
ng from a sTehuantepec int classified a
Exceptionallns fuelled exp
Patricia grewe.
t was considend Odile, hoat 3:30 am
e beating Huurricane in the
Date
20-24 Oct 2015
9-17 Sept 1997
22-26 Oct 2002
10-19 Sept 2014
he most intense hu
onsidered the in Mexico
d to caus, images 1 and
Date
July 15 Aug 15 Sep 15 Oct 15 Nov 15 Dec 15 Jan 16 Feb 16 Mar 16
y in the Pacific tem
an be regardelone ever ob
with maxim
prawling distn mid-Octobe
a tropical deply favourableplosive intensw from a trop
ered as seriouowever, withi
m it became urricane Linde Pacific. Tab
Max wind(Km/h)
346
295
270
220
urricanes in the P
most intenseo and worlde potentiallyd 2.
Anomaly Temp.
1.6 2.1 2.3 4.9 3.0 2.8 2.6 2.4 1.7
mperature
ed as the mobserved in tmum sustain
turbance in ter 2015, Patricpression on
e environmensification on pical storm to
us as Hurricanin hours on
a Category a, as the mole 2.
ds Pressure(hPa)
872
902
913
918
Pacific
e hurricane evdwide, it wy catastroph
ost the ned
the cia 20
ntal 22
o a
nes 23 5
ost
e
ver was hic
Im
BmphwceJalo Bwstofprev
Image
mage 2. Hurricane
ased on the imodels on the
henomenon, itwould affect wentral, coastaalisco States ocated.
etween 20 anweather warnin
ate and munif Hurricane Protection provacuated, and
Dam
e 1. Hurricane Pa
e Patricia at 7:00
information pevolution andt was determiith torrential r
al and mounwhere Tom
nd 24 October ngs to inform icipal governmPatricia to tiotocols. Popshelters were
Management
atricia Trajectory
hrs 23/Oct/2015
provided by fod movement oined Hurricanrains of 150-2ntains of Comatlan river
CONAGUA the public an
ments on the imely implem
pulation at installed.
in Mexico
forecasting of weather ne Patricia 250 mm in olima and
basin is
issued 15 nd federal,
evolution ment civil risk was
Dam M
AccordinOctober reported Categoryin the vNavidad Estrecho,in the muJalisco, im
Image 3
The eye was expeduring thof 305 kmoving to
Accordinthe Worconfirmedsustained Due to damage cstrong wiinfluencesuccessfuemergencissued byfrom prevevacuatedwere crea
Management in
ng to Weath2015, the Nat 18:00 hrs.
y 5 Hurricane vicinity of Te
Bays, a reg, La Manzaniunicipalities omage 3.
. Hurricane Patric1
of Patricia haected to continhe subsequentkm / h windsoward the nor
ng to the bulleld Meteorolod Hurricane
d winds of 346
the magnitudcould be expeinds and high e, image ully implemcy protocol bay CONAGUAvious disasterd from their hated.
n Mexico
her Alert NNational Wat. Mexico CenPatricia woul
enacatita, Cuion where thlla and Melaqof La Huerta
cia impact zone, 218:00 hrs
ad a diameternue entering st hours with ss, gusts of urth-northeast a
etin issued onogical Organie Patricia h6 km/h.
de of the hucted from therainfall over a4. Mexica
mented an ased on based A and drawingrs. Thousandshomes and ove
o. 068-15,er Commissintral Time, thld make landfestecomate a
he towns of que are locate
a and Cihuatlá
23 October 2015
r of 10 km asouthern Jalissustained win
up to 380 kmat 22 km/h.
n 25 April 201ization (WMhad maximu
urricane, sevee combination a large radius an authorit
unprecedenton the bulleti
g on experien of people weer 1,000 shelte
23 ion hat fall and
El ed, án,
,
and sco nds m/h
16, MO)
um
ere of of
ies ted ins nce ere ers
I
Canreth
ThsuthvoTa
Image 4. Rainfall
ONAGUA thnd the conditieceive suddenhe hurricane.
hus, 29 daurveillance in he managemenolumes that able 3.
Imag
l forecast between
hrough SGT mions and evolun inflows from
ams remaineorder to carrynt, control anwere deemed
ge 5. Hurricane Pa
n 23rd and 24th Oc
monitored the ution of dams
m rainfall gen
ed under py out in a timend discharge od necessary,
atricia trajectory
3
ctober 2015
hurricane s likely to nerated by
permanent ely manner of storage
image 5
Page 4
Table 3.
Of all dadam was it was locthe hurriczone; it hOHWL (materialsinhabitanINEGI ce
Chart 1.
Aguamilpa, N
El Cajón, Nay
La Yesca, Jal.
José Ma. Mo
Cajón de Peñ
Trigomil, Jal.
Trojes, Col.Tacotán, Jal.
Basilio Badill
San Juanico,
La Vega, Jal.
Laguna de A
Vicente C. Vi
Laguna Colo
Tenasco, Jal.
Copándaro, M
El Trigo, Jal.
Santa Elena,
Sant iago Bay
Guadalupe VAchimec, Za
Excame, Zac
El Chique, Za
Tayahua, Zac
San Pedro Pi
San Marcos
El Cazadero,
Jocoque, Ags
Niágara, Ags
N am e
0
1000
2000
3000
4000
5000
6000
Cajón Peña
Mo
. List of dams un
ams under surconsidered to
cated approximcane; it wouldhad a storage (466.69 hm3);, Chart 1 and
nts were livinensus of 2010
Most relevant dasurveillance du
Pr
Nay. 4
y 18
. 16
relos, Mich. 4
ña, Jal. 48
. 24
214
o, Jal 1
Mich. 5
4
mela, Col. 3
llaseñor, Jal. 1
rada, Jal. 1
. 5
Mich. 6
2
Dgo.
yacora, Nay. 13
Victoria 8ac. 7
c. 5
ac. 13
c. 3
edra Gorda, Z
Zac. 2
s. 1
s 1
e dam
dea
Trigomil Trojes
onitoring dams
% fi
der surveillance dPatricia
rveillance, theo be the most mately 60 km d be the first of 480 hm3,
; it is a curtad image 6; anng downstream.
ams by storage cauring Hurricane P
resent N A M
4850 554
899.64 2551
687.55 2292
482.9 540
80.87 466.
48.92 250
19.41 220.49.34 149.
34.2 145.
57.6 60.4
49.48 44
38.11 38.3
4.44 14.4
3.32 12.
5.97 10.
6.19 6.5
2.58 4.4
14.7 15.
30.15 130.
83.09 84.77.17 6.7
51.82 71.6
39.48 139.
31.63 31.
0 5
s/ d 3.5
22.14 22.1
0.97 10.9
6.33 16.1
(hm 3)
La Villita Aguamilpa
during Hurrica
ill Vol. NAM
during Hurricane
e Cajon de Peat risk, becaufrom the eye landfall impa5% higher th
ain of graduatnd about 13,0m, according
apacity kept undeatricia.
M O
40 87.55
1.7 74.45
.92 73.60
.8 89.29
69 103.04
0 99.57
81 99.3724 100.07
72 92.09
48 95.24
4 112.45
34 99.40
44 100.00
8 104.06
5 56.86
5 95.23
4 58.64
1 97.35
05 100.08
75 98.044 106.38
61 72.36
95 99.66
6 100.09
0.00
5 s/ n
13 100.05
98 99.91
19 100.86
% fill
0
20
40
60
80
10
12
El Cajón La Yesca
ne Patricia
MO
eña use
of act
han ted
000 to
er
Thst
C O It ofTolaup
Thdiofexelsa
0
0
0
0
00
20
Image 6. LocaHu
he remainingorage capacity
ajon de Peña
Overview
was built bef Hydraulic Romatlan Rive
atitude and 10pstream of To
Image 7. A
he dam consisikes of gradedf 1015m, maxcavation, crlevation; clay and filters, ban
Dam
ation of Cajon de urricane Patricia
g dams despy were below
a Dam in Jali
etween 1974-1Resources (SRer, coordinate05° 12' 10" womatlan, Jalisc
Aerial view of the
sts of a main cd materials. Taximum heigrown width
core coverednk 0.7: 1 on
Management
Peña dam in refeimpact zone
pite having s80% OHWL
sco State
1976 by the SRH). It is locaes 19° 59' 3
west longitudeco, image 7.
e curtain and spill
curtain and foThe curtain haght of 68m
of 10m to d with selecteboth sides; gr
in Mexico
erence to
significant capacity.
Secretariat ated in the 30" north , 16.8 km
lway
our closing as a length
from the a 142m
ed gravel-ravel-sand
Dam M
supports covered w
The mainTable 4 a
Crest EHWL OHWL Weir crest Dead volum
It has twunder dikanother maximum Design flthe right
0
500
1000
1500
2000
2500
3000
3500
104
Are
a (
km2
)
Management in
were placed with muck and
Image 8. M
n dam design and Chart 2.
E
me
Table 4. D
Chart 2. Areas-c
wo intake workke num. 2 fone using th
m capacity of 8
lood is 4,380 side of the cu
4.9 109.9 114.9
Dam Curve
a
n Mexico
on filters to ad tumbled ston
Max curtain sectio
characteristic
Elevation (masl) 142.00 139.20 130.37 123.90 104.98
esign characteris
capacity-elevation
ks; the high ifor a 40 m3/he diversion 80 m3/s.
m3/s, spillwaurtain, it has
119.9 124.9 129.9
Lifts
"Cajón de Peña"es lifts-areas-capacity
rea capacidad
a side bank 2nes. image 8.
on
cs are shown
Storage (hm3)
707.69 466.69 321.02 55.00
tics
ns Curve
intake was bu/s capacity a
tunnel with
ay is located direct dischar
0
100
200
300
400
500
600
700
800
134.9 139.9
Cap
acity
( h
m3 )
d
2:1,
in
uilt and
a
on rge
inw4,
Thgepoco
Ch
1
3
5
7
AL
MA
CE
NA
MIE
NT
OH
m3
nto the channewidth, 12m he
,000 m3/s. ima
Imag
his dam ofenerating spillotential of omparison to t
hart 3. Historica
50.0
350.0
550.0
750.0
1-J
an
31-J
an
2-M
ar
N2
el, controlled beight, for a reage 9 and 10.
Image 9. Open
ge 10. Storage alm
ften has hils in different the Tomatla
the reservoir c
al Storage of Cajo
1-A
pr
1-M
ay
31
-May
30
-Ju
n
Cajón de Peña damRíver Tomatlán
NAMO2013
by five radial egularised dis
ing gates
most at its peak
gh storage months due t
an River rucapacity, Char
on de Peña dam, J
30
-Ju
l
29
-Au
g
28-S
ep
28-O
ct
m, JAL.n
20152012
5
gates, 8m scharge of
volumes, to the high unoff, in rt 3.
Jalisco
27-N
ov
27-D
ec
20142011
Page 6
Dam ma As previoSGT kesurveillanof the raweather e
This was rainy seas
By the evolume wOHWL withdrawstorage tfollowing
These cothe Gate of TechSantiago-
A flow osecond hawas reachwithdrawonly to m
420
430
440
450
460
470
480
490
500
510
1-Ja
Alm
acen
amie
nto
(hm
3)
nagement in
ously describeeps nationance, checkingainy season event.
the case of Cson of 2015.
end of the dwas 476.74 h
(466.69 hmwals were coto receive rug rainy season
Chart 4. Janua
ontrol withdraOperating Pol
hnical Affairs-Pacific (OCL
of up to 67 malf of March uhed, and the d
wals were mameet irrigation
n 11-Jan 21-Jan 31-Jan
C
NAM
2015
bed, CONAGUal dams ung dam levels b
or during an
ajon de Peña
dry season, thm3, which is m3), Chart onducted to unoffs generan.
ary-April 2015 St
awals were clicy endorsed s (SGT) an
LSP) Basin Or
m3/s was withuntil 5 April odam was let tde through thcommitments
n 10-Feb 20-Feb 2-Mar
período
Cajon de Peña dam
MO ALMACEN
UA through tder permanebefore the onn extraordina
dam prior to t
the dam storhigher than 4; preventi
allow for neated during t
torage
onducted undby the Divisi
nd the Lermrganization.
hdrawn from tonce the OHWto freely evolvhe water intas.
12-Mar 22-Mar 1-Apr 1
NAMIENTO
the ent set ary
the
red its
ive ew the
der ion
ma-
the WL ve; ake
StE D31chvobe
FrofSeresp
1-Apr
tart of the raiarliest signifi
am volume d12.48 hm3 onhart 5. A decolume and anetween 19 Ma
Cha
rom 4 Septemf 110 m3/s eptember andelease an avepillway and in
Chart
Date W
0
50
100
150
200
250
300
350
400
450
500
1-Apr 16-Apr
Alm
acen
amie
nto
(hm
3 )
0
100
200
300
400
500
600
Alm
acen
amie
nto
(hm
3 )
Dam
iny season: icant runoffs
decreased to n 12 July, ducrease of 164
n inflow of 44arch and 12 Ju
rt 5. Storage in A
mber to 8 Octowas recor
d 5-8 Octobeerage flow o
ntake work, ch
t 6. August-Octob
Withdrawal (m3/s)
1-May 16-May 31-May
período
Cajon de Peña dam
NAMO AL
período
Cajón de Peña Da
NAMO
Management
a minimum suring the rain4.26 hm3 in t4.2 hm3 were uly.
April-July 2015
ober, an averarded; betweeer, it was dof 100 m3/s hart 6 and Tab
ber 2015 Storage
Stored volume (hm3)
15-Jun 30-Jun 15-Jul
o
m
LMACENAMIENTO
am
Almacenamiento
in Mexico
storage of ny season, the stored registered
age inflow en 11-30
decided to from the
le 5
Overall %
30-Jul
Dam M
5 October 6 October 7 October 8 October 9 October
13 October 14 October 15 October 16 October
Tabl
Analysis If the dapreventivthrough reservoirstorage - below EH Followingset to maicontrol adownstreevents we
Runoffs On 20 O489.62 hmwere conexpected level to rhad occudamage acircumstalevel excTable 6.
Management in
175 92.14 92.14 92.14 46.78 23.53 10.60 10.60
0
le 5. Evolution of
am had remve withdrawa
the spillwar would hav
an elevation HWL (Extraor
g this event, nintain sufficie
an extraordinaam from a sere expected.
from Hurrica
October the m3, nearly 5%
nducted to allorunoffs, as w
reach or exceeurred, it woas it is an earances would ceed the EHW
n Mexico
466473475474477480481482484
f storage 5 to 16 O
ained with hals had noay and intave reached
of 138.84 m rdinary High
new control went capacity inary flow and pudden release
ane Patricia
dam storage% above OHWow for new st
well as to preveeded EHWL.
ould had learthworks dambe possible
WL projected
sto6.43 93.13 105.19 104.93 107.77 100.61 101.89 102.92 104.47 10
October 2015
high levels aot been maake work, ta 697.24 hm- that is 0.36 Water Level)
withdrawals wen the reservoirprevent damae, since rainf
e recorded wWL, withdraw
orage to receient the reservIf this situatid to structu
m, and under to allow wa
d, Chart 7 a
ored 99.9 01.4 01.8 01.8 02.4 03.0 03.3 03.5 03.8
and ade the m3
6 m ).
ere r to age fall
was als ive oir ion
ural no
ater and
C
22222
T
ThgemmR
Ww
Chart 7. Evolutio
Date W
21 October 22 October 23 October 24 October 25 October
Table 6. Evolution
he average inenerated from
mean dischargem3/s.
ainfall was low
Image 11. R
When inflow dwere closed and
0
100
200
300
400
500
600
20-Oct 2
Alm
acen
amie
nto
(hm
3 )
Dep
resi
ónT
ropi
cal
on of the reservo
Withdrawal (m3/s)
99.54 351.17 658.59 421.40
0
n of Cajon de Peñ
nflow betweem Hurricane Paes from 21 to
wer than pred
Rain accumulated
decreased afted stored water
21-Oct 22-Oct
Pe
Cajón de P
NAMO
Hur
acán
Cat
egor
ia I
"Pat
rici
a"
ir during Hurrica
Stored volume (hm3) 489.62 480.86 432.47 398.86 394.98
ña Dam, 21-25 O
en 23 and 26atricia was 2024 October w
dicted, image 1
d 20-24 October 2
er the hurricar began to incr
23-Oct 24
eríodo
eña dam
ALMACENAMIENTO
Hur
acán
Cat
egor
ia V
"Pa
tric
ia"
Hur
acán
Cat
egor
ia V
"Pa
tric
ia"
toca
tie
rra
7
ane Patricia
Overall % stored104.9 103.0 92.7 85.5 84.6
ctober 2015
6 October 6.85 m3/s,
was 382.68
11.
2015
ane, gates rease.
4-Oct 25-Oct
toca
tie
rra
Page 8
Analysis
Even thorainfall withdrawthe forecelevationOHWL aThe popu
In the foPacific ghigher thand Table
Image
day
Oct Ci
23 24 30
31
Table 7. R
This raiconcentrabasin cauof 274.38165.74 mOn 1 Novand contrspillway
ough Hurricathan it was
wals helped tocasted storagen of 134.07 and the conseulation was ev
llowing days,generated raian that causede 7
e 12. Rainfall acc
Stationihuatlan Caj
20.6 6198 6395 8
90.3 7
Rainfall record in
infall, the sation from theused significan8 m3/s on 30
m3/s between 2vember the darol withdrawaas shown in C
ane Patricia gs expected,
o avoid the rese levels of 56masl, i. e. quential damvacuated in a
, moisture intinfall in the d by the Hurr
cumulation on 30
n jón Cuale
6 6.4 60 48.5 88 18.5
71 47
n the stations nextDam.
soil saturatioe Hurricane ant inflows, w
0 October and29 October anam reached itals were carriChart 8 and Ta
generated lowthe preventi
servoir to rea62.10 hm3 at
3.69 m abomage to the da
timely manne
trusion from treservoir ar
ricane. Image
0 October 2015
Rainfall accumulation
(mm) 339.5
Patricia
709.80
t to Cajon de Peñ
on, and runoat the top of t
with a daily hid an average nd 4 Novembts OHWL agaed out from table 8.
wer ive
ach an
ove am. er.
the rea 12
ña
off the igh of
ber. ain; the
Ta
An AlPareofgeofOre13da
Byadovthof Thenre
Chart 7. Storage
Date W
31 Oct 1 Nov 2 Nov 3 Nov 4 Nov 5 Nov 6 Nov 7 Nov 8 Nov
able 8. Evolution
nalysis
lthough subatricia were eservoir manaf Pacific moenerated signf the dam
October to 8 eservoir to rea38.99 masl, i.amage to the d
y the end odequate managver the OHWLhe released flof water".
he new polnabled the foleservoirs to be
0
100
200
300
400
500
600
Alm
acen
amie
nto
(hm
3 )
Dam
e between 25 Octo
Withdrawal (m3/s)
107.35 0
15.24 101.33 198.07 50.27
0 15.24
0
n of Cajon de PeñNovember 2
sequent runconsidered
agement, the oisture was nificant rainfaand withdraNovember,
ach 684.08 h.e., 0.21 m bdam.
of the year, gement of levL was reacheows could be
icy implemellowing key o
e met:
Pe
Presa Cajón d
NAMO
Management
ober and 8 Novem
Stored volume (hm3)
453.73 466.44 475.71 477.77 473.65 471.07 472.62 475.71 478.29
ña Dam, from 31 O2015
offs from Hfor determi
entrance of thnot considereall. Due to theawals made we prevented
hm3, at an eleelow EHWL,
given the tivels in the damd, Chart 9, inconsidered as
ented by COoperation obj
eríodo
de Peña
ALMACENAMIENTO
in Mexico
mber 2015
Overall %
stored 97.2 99.9 101.9 102.4 101.5 100.9 101.3 101.9 102.5
October to 8
Hurricane ining the the stream ed, which e low level
from 21 d storage evation of , avoiding
mely and m, storage
n spite that s a "waste
ONAGUA ectives of
Dam M
1) Tprotocolsof their p 2) hydraulic 3) LBodies anin decisio
4) Prequired w
Chart 9. L
Conclusi The opemaking pand henceto the downstre
At presepredict iformulatestudying frequency The tempOcean gformationto keep cl
400
420
440
460
480
500
520
540
560
2
VO
LUM
EN A
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AM
IEN
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(hm
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Management in
Timely imps for populatioroperty, and c
Safeguarding c and function
Linking Fednd the sciention-making.
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Level Reservoir o
ions
eration policyprocess to dee its releases, dam and
am.
ent the CONimpending exe early warnof factors tha
y of disasters.
perature rise generated con of Hurricanelose watch on
2004 2005 2006 2007 20
Level Res
ALMACEN
n Mexico
lementation on evacuationcreating tempo
structural, nal security of
deral, State ific and techn
ufficient wateds.
on 31 December i2015
y is an ongefine reservoirin order to avthe infrastr
NAGUA aimsxtreme eventnings from mat influence th
above 27 ° Cnditions cone Patricia, thu
n this indicator
008 2009 2010 2011 201
AÑOS
servoir on 31 Dece
NAMIENTO
of emergenn and protectiorary shelters.
hydrologicthe dam.
and Municipnical commun
er to meet t
in the period 2004
going decisior storage lev
void any damaructure locat
to detect ats in order monitoring ahe intensity a
C in the Pacinducive to tus it is importar.
90.
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12 2013 2014 2015
ember
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n the case ofermanent sur
withdrawals to rder to pro
manoeuvre innflows and pre
he dam reache. 85% of its reventive withatricia, 21-24
measure alloweservoir levels
f withdrawalsHurricane Patri
storage level m below OHWerious risk opulation of T
his new opONAGUA inored a volumHWL capaciroves the prop
A gradual varievels with tandslides in thlso allowed fond to avoid opulation loceleased volum
ibliography
. Dams in Mommission (2
. Operation ajon de Pechnical Affai
. Evolution western and
ivision of Tec
f the Cajon drveillance allo
be conductedvide in adv
n case of pevent risks
hed a storage vOHWL capa
hdrawals cond4 October 2
wed for a hs.
had not maicia the reservat an elevatioWL, which the dam, in
Tomatlán locat
perating poln all dams in me of 491.95 ity by the enper manageme
iation was achthese actionshe slopes or or an acceptadamage to
cated downstme.
Mexico Vol. 2011)
Policy for seña Dam, irs, 2015
of storage dnorthwestern
chnical Affair
de Peña Damowed for a d in a timely mvance a mapossible extr
volume of 39acity, as a resducted during 2015, this fave better c
ade in advanvoir would havon of 684.08 mwould have
nfrastructure ted downstrea
icy implemethe country eMm3, 5.5%
nd of the yeent of the dam
hieved in thes, reducing in the dam st
able regulationthe infrastru
tream from
XII. Nation
spillway gateJalisco, Div
dams in then regions ofs (2015)
9
m, Jalisco, series of
manner in argin for raordinary
98.86 hm3, sult of the Hurricane
favourable control of
nce during ve reached masl, 0.21
place at and the
am.
ented by enabled to above its
ear, which m.
e reservoir risks of
tability. It n capacity cture and a sudden
nal Water
es of the vision of
e central, f Mexico.
Page 10
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7. Nation058-15. Patricia w
8. Nation060-15. ICategory22 Octob
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ricane PatricChannel.
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Dam Management in Mexico