Major Cause and Constraint Structural Measures Non ... · Besao Sagada Sabangan Tonudan Hungduan Mayoyao Banaue Kiangan Lagawe Lamut Diadi Villa Verde Bagabag Bambamg Bayombanc Quezon
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M ajor Cause and C onstraint
Structural M easures
Non-Structural M easures
Supporting M easures
C o unterm easure s to achie ve; 1. Prote ctio n of C asualty and Assets 2. Increase of A gricultural Products
Natural Cause (1) (River Channe l )1. Ex t ensive f lood p lain2 . B ack water due to con strict ed sect ion s in the Magapit narroe s 3 . Se dimentation 4 . B ank erosion due to so f t riverb ank
Fl ood Control Problem 1 . Damage o f casualty an d asset s 2. Low agricult ural p r oduc t
Natural Cause (2)1. Co nce nt rat ed rainfall br o ught by t y pho on 2 . Poo r v egetation
Soci al an d Economi c Cons traint1. Shortage of budge t2. Lack of overall plan and implementat ion schedule3. Lac k of integrated organization and c apabilit y
Widening of Bottl e ne cks1. Lo wer in g o f floo d wate r lev el2. Decre ase o f in undat ion depth an d d urat io n in t he upst ream
Embankm ent1 . Decrease o f inun dation are a a nd cr eation o f n ew land 2. Co nt ribut e as rur al road
Bank Protection Works 1 . Stabilize low wate r ch ann el
Strengthening of Institution and @ @ Or ganization
1 . Str en gthen in g of f unding 2 . Insti t utiona l im prov emen t 3. Or ganizat ion al improv emen t 4 . C apa cit y b uilding 5. Awaren ess education
Non-structural Me asures
1. Wa ter sh ed managemen t 2. Disaster managemen t system 3. Reset tlemen t
H ig h V ulnerability a gainst D isaster
1 .C as ualty2 .Los s of a sse ts3 .Low prod uctivity
Mul ti purpose Dam 1. Decrease o f floo d p eak 2. Supp ly water for irr igation d ev't
Flood Dike (Embankment) and Riverbank Tree Zone
Design High Water Level
Dike DimensionsDesign Discharge Free Board Top Width
(cu.m/s) (m) (m)
5,000 to 10,000 1.5 6
more than 10,000 2 7
Riverbank Tree Zoneto form natural levee ( andprotect earth dike)(by Bamboo, Tree, etc.)
Top Width
FreeBoard
Boundary of Administrative River Zone
Note;
Purpose of Riverbank Tree Zone;
1. To reduce velocity2. To form natural levee by siltation3. To protect dike from scouring due to flood flows
Dike
Low Water Channel
Drain
Siltation afterpassing through theriverbank tree zone(year by year)
Dike constructionfinally by additionalembankment
Source : The Master Plan Study on the Cagayan River Basin Water Resouce Development, Supporting Report Aug. 1987 by JICA (page;FC-131)
17,900(15,900)[25,400]
16,900(17,800)[24,600]
17,700(18,700)[25,600]
5,900(7,700)[9,100]
15,600(16,300)[23,100]
10,000(10,700)[15,100]
Siffu No.1(A) Dam Vol : 96.1 mcm Rout 0.10
Mallig No.2 Dam Vol : 93.4 mcm Rout 0.10
Magat Dam Vol : 200 mcm Rout 0.638
Cagayan No.1 Dam Vol : 318 mcm Rout 0.683
Ilagan No.1 Dam Vol : 382 mcm Rout 0.10
900(1,400)[1,100]
900(6,100)[1,200]
4,800(6,900)[7,000]
Cagayan River
Ilagan River
Cagayan River
Mallig R.
LEGEND Flood Discharge (m3/s)
10,000(10,700)[15,100]
: Long-term Plan (25yr): Existing (25yr): Framework Plan (100yr)
Maagapita
Nassipin
Alcala
Chico River
← Cagayan River
Case-4 Tupang + Nassiping + Magapit Site (W=500m)
Case-5 Tupang ~ Magapit Site (W=700m)
Case-3 Tupang + Nassiping Site (W=500m)
Case-2 Tupang Site (W=500m)
( Case-1 Without widening )
Tupang Sitep g
Nassiping Sitep g
Magapit Siteg p
m30km
30km
3
5km3535335
m
Th
e F
ea
sib
ility S
tud
y o
f the F
lood
Co
ntro
l Pro
ject
for th
e L
ow
er C
agayan R
iver
in th
e R
epublic
of th
e P
hilip
pin
es
JA
PA
N IN
TE
RN
AT
ION
AL
CO
OP
ER
AT
ION
AG
EN
CY
Fig
ure 7
.4.3L
oca
tion
Map
of B
ottlen
ecks
in th
e Magap
it Narro
ws
0 1 2 kmW=500m
W=700m
Channel
Magat Dam (Existing)
Babuyan Channel
Dummon River
Pared River
Chi
co R
iver
Tuguegarao River
SIER
RA
MA
DR
E M
OU
NTA
INS
SIER
RA
MA
DR
E M
OU
NTA
INS
PinacanauanRiver
Tumauini River
Caga
yan
Rive
r
Ilaga
n Riv
er
Siffu River
Mallig River
CORD
ILLE
RA M
OUNT
AINS
Adda
lam R
iver
Caga
yan
Rive
r
Cagay
an R
iver
Magat River
Gabut COC
San Isidro COC
Tuguegarao COC
Alcala-Buntun Dike
Enrile Dike
Siffu Dike
Tuguegarao Dike
Lower Reach Dike
Siffu No.1 Dam
:Proposed schemes in the Reviewed Long-term Plan including cut-off channels in tributaries, bank protection works at 73 sites in the basin wide, and non-structural measures (evacuation system and resettlement area development).
Mallig No.2 Dam
Alimit No.1 Dam
Matuno No.1 Dam
Magat DikeUpper Reach Dike
Cagayan No.1 Dam
Ilagan No.1 Dam
Middle Reach Dike
Ilagan Dike
Aparri
Alcala
Tuguegarao
Ilagan
Cabagan
0 10 20 30 40 50 kmScale
N
The Feasibility Study of the Flood Control Projectfor the Lower Cagayan River
in the Republic of the PhilippinesJAPAN INTERNATIONAL COOPERATION AGENCY
River Course
Diking systemBasin Boundary
LEGEND
Hilly land
Dam reservoir
F74
Long Term Plan of Flood Control in the Cagayan River Basin
Figure 7.4.4
Cut-off Channel
100m
6m
500m
1:3 1:3
1:3 1:3
100m
2m
7m
1:3HWL 1:31:3
Dike construction
(finally by additional
embankment)
Siltation after
passing through the
riverbank tree zone
(year by year)
Drain
Riverbank Tree Zone
to form natural levee (and
protect earth dike)
(by Bamboo, Tree, etc.)
Flood Dike (Embankment) with Riverbank Tree Zone
uguegarao dike
=14.3km
Alcala-Buntun dike
Gabut cut-off channel
Drainage culvert for tributary
6 gates x 1.5m x 1.5m
Tuguegarao cut-off channelEnrile dike
L=4.6km
San Isidr
National High
Th
e F
ea
sib
ility S
tud
y o
f the F
loo
d C
on
trol P
roje
ct
for th
e L
ow
er C
agayan R
iver
in th
e R
epublic
of th
e P
hilip
pin
es
JA
PA
N IN
TE
RN
AT
ION
AL
CO
OP
ER
AT
ION
AG
EN
CY
Fig
ure 7
.4.5
Loca
tion
Map
of R
eview
ed F
lood
Con
trol
Lon
g-term
Pla
n (fro
m A
lcala
to T
ugu
egara
o)
0 1 2 km
Babu
yan
Ch
an
nel
Dum
m Pa
Chico R.
R.
Pina
cana
uan
RR
Pi
N
Ap
arr
i
Cab
agan
Alc
ala
Cagayan R.
Tu
gu
eT
ugu
ugu
egara
oegg
au
gu
e
Tugu
eg
Tugu
e
Aparri
Lollo
Ballesteros
Alcala
Tuao
Connor
Baggao
Solana
Tuguegarao
PinukpukEnrile
Allacapan
Lasam Gattaran
Santo Nino
Rizal
Piat
Iguig
Amulung
Balbalan
Tabuk
RizalSanta Maria San Pablo
CabaganSanto Tomas
Magsay
TumauiniQuezon
Paracelis
Natonin
Pasil
Lubuagan
Tinglayan
Sadanga
Bontoc
Bauko
BesaoSagada
Sabangan
Tonudan
Hungduan
Mayoyao
Banaue
Kiangan
Lagawe
Lamut Diadi
Villa Verde
Bagabag
Bambamg
QuezonBayombanc
Ambogula
Solano
Kayapa
Aritao Dupax Del Norte
Santa Fe
Duupax Del Sur
Kasibu
Gamu
Roxas
QuilingIligan
Mallig
San ManuelBurgos
Naguilian
Cabatuan
LunaAurora
Reina MercedesSan Mariano
Benito Soliven
Ramon
San Mateo
Cauayan
AngadananSan Guillermo
Alicia
San Isidro
Santiago
Cordon
Diffun
Echague
Cabarrpgios
Ssaguday
Jones
San Agustin
Maddela
Aglipay
Dilalongan
Cosigurar
Dilasag
Palana
Divilacan
Moconacon
Baguey
Santa Teresita Gonzaga
ChicoRiver
Paret
River
Pina ca nauanRive r
CagayanRiver
IlaganRiver
C agayanRiver
Rapids RiverCaga y
anRive
r
CasignanRiver
Mag
at
River
CagayanRive
r
N
10 0 10 20 30 40 50km
SCALE
122°00'121° 121°30′
18°00'
17°30′
17°00'
16°30′
16°00'
122°00'121°00' 121°30′
18°00'
17°30′
17°00'
16°30′
16°00'
Legend
Flood Prone Area
River Bank Erosion
Soil Erosion
Figure 7.5.1
The Feasibility Study of the Flood Control Projectfor the Lower Cagayan River
in the Republic of the PhilippinesJAPAN INTERNATIONAL COOPERATION AGENCY
Figure 8.2.1 Long Term Plan of Reforestation � in the Cagayan River Basin
Chico River Basin
Forest
Compart
mentTotal Area
Area over
18%Total Area
Area over
18%
401 752 263 400 241 4
402 527 158 295 121 37
403 851 545 567 408 95
404 165 154 155 154 0
405 997 847 770 749 100
406 1,004 261 213 50 208
407 461 148 97 5 138
632
408 705 71 115 21 49
Forest
Compart
mentTotal Area
Area over
18%Total Area
Area over
18%
501 884 504 437 274 203
502 917 881 881 854 28
503 509 270 231 163 80
504 580 551 540 528 23
506 372 372 342 338 33
507 676 608 522 507 99
508 368 357 353 353
27
0
27
0
0
2
0 4
510 379 345 232 231 0 114
584
Land (km2)
Forest
Compart
mentTotal Area
Area over
18%Total Area
Area over
18%
601 418 4 85 0 4
603 1,487 997 600 444 528
604 455 268 122 77 191
605 537 494 370 356 138
606 499 439 454 429 10
607 899 845 691 683 147
608 857 668 575 454 207
Land (km2)
Forest
Compart
mentTotal Area
Area over
18%Total Area
Area over
18%
701 3,249 2,501 2,596 2,371 18
18
Land (km2)
Forest
Compart
mentTotal Area
Area over
18%Total Area
Area over
18%
409 1,027 236 191 21 210
505 574 402 424 327 75
509 450 405 371 346 53
Total
Total
Total
TotalTotal
338
Land (km2)
Forest
Compart
mentTotal Area
Area over
18%Total Area
Area over
18%
410 526 184 197 32 148
411 550 0 154 0 0
412 511 0 137 0 0
413 638 191 444 166 26
602 963 250 484 164 36
801 327 324 325 324 0
802 2,310 2,033 2,174
1,226
1,901 130
901 860 731 796 678 52
Total 392
Land (km2) Present Forest (km
2)
Land (km2)
Present Forest (km2)
Present Forest (km2)
Present Forest (km2) Present Forest (km
2)
Present Forest (km2)
0
23
0
0
0
15
7
4
0
0
0
51
0
1
0
112
6
0
5
19
0
41
0
0
2
5
0
Agri-�cultural
Land over18% in Slope
Proposed�Refores-
tationArea
Agri-�cultural
Land over18% in Slope
Proposed�Refores-
tationArea
Agri-�cultural
Land over18% in Slope
Proposed�Refores-
tationArea
Agri-�cultural
Land over18% in Slope
Proposed�Refores-
tationArea
Agri-�cultural
Land over18% in Slope
Proposed�Refores-
tationArea
Agri-�cultural
Land over18% in Slope
Proposed�Refores-
tationArea
N
401
10 0 10 20 30 40 50 km
SCALE
604
507508
501
502
504503
506
509
402
401
403
404
406
405
407
408
409
701410
411
603
602
412
608
607
606
510
605601
413
801
802
901
505
F77
N
0 10 20(km)
Scale
30 40 50
RiverBasin BoundarySub-basin Boundary
Legend
Required Number of Sabo Dams
No
Sub-Basin NumberNo
Magat Dam
Pang
ul R
iver
Tanu
don
Rive
r
Sta. C
ruz Rive
r
Casecnan River
Dummon River
Zinundu ng
an R
iver
Paret River
Tuguegarao River
Matal ag River
Chi co R
iver
Ma baca Rive r
Salta n Rive
r Cagayan
Rive
rPasil River
Mallig
Rive
r
Siff u River
Magat River
Sabo
ngan
Riv
er
Tum auini R i ver
Abuan Rive
r
Catalangan R
iver
Cag ay
an R
iver Disbumgan River
Ibulao River
Da vid R
iver
Dib
uluan Riv er
Dibuluan River
Ilaga
n Ri
ver
Diduyo
u Ri
ver
Addalam
River
Kasib u River
Cad
a cla
n R
iver
18
17
15
19
16
1314
49
50
48
47
38
46
45
37
36
35
34 33
4432
31
30
27
26
42
4341
40 28
39
20
11
29
78
1
2
3
9
4 5
622
23
10
12
25
21
24
1
4
10
3
1
7
Figure 8.3.1
The Feasibility Study of the Flood Control Project
for the Lower C
agayan Riverin the Republic of the Philippines
JAPA
N IN
TERN
ATION
AL C
OO
PERATIO
N A
GEN
CY
Long Term
Plan of Land U
se in theC
agayan River B
asin
Figure 9.1.1
Present Condition SAFDZ as target Proposed Land Use in Long Term Plan and Reviewed Master Plan up to 2020
Basin
64,200
40,900
472,500
66,600
Corn field
Built-up area
274,200
200
11,900
2,728,100
849,100Basin
Others
1,097,500
Agro-Forestry
Corn field
528,000
(Unit:ha)
34,600
52,100
2,728,100
Kaingin
Fishpond
221,200
0
Built-up area
Fishpond235,100 13,900
Paddy field
152,700
Wild Grasses
(277,600)
(153,300)
Grassland324,700
105,100
Others
Agro-Forestry
113,800676,400
Other field
1,386,800
63,600
108,400
Pastures
KainginForest
Forest
Shrubs
Grasses471,400
Grassland
Paddy field
Agriculture676,400
Shrubs
Agriculture
103,500
137,300
Pastures
Other field
2. Livestock (Ls)153,300
4. Cr/Ls24,300
1. Crop (Cr)626,700
3. Fishery (Fs)13,400
5. Cr/Fs30
7. Fs/Ls450
6. Cr/Ls/Fs150
8. RemainingNPAAAD194,300
9. Agro-Forestry 277,600
10. Watershed/Forestry1,386,800
11. Built-up areas52,100
Source: Present condition and SAFDZ=SAFDZ data 1999 BSWM
Presented area is for the long term and reviewed master plan, except pastureand agro-forestry, where figure of long term plan is in the frame and that of thereviewed master plan is in the parenthesis.
Note:
F79
N
Legend
NIS and Major CIS
NIP and Major CIP
On-going NIP
Irrigation Scheme
Figure 9.3.2Irrigation Development Schemein Long Term Plan
Lallo West PIP
Magapit PIS
Nassiping PIP
Sto. Niño PIP
Lower Chico RIS
Alcala Amulung West PIP
Solana PIS Rel. & Ext. Project
Santa Maria Communal PISPinacanauan RIS
Enrile PIP
San Pablo-Cabagan IS
Tumauini Reservoir Project
Rizal IP
Upper Chico RIS Delfin Albano PIP
Santa Isabel PIP Lapogan PIP
Lulutan PIPIlagn PIP
Mallig RIS
Gamu PIP
Damao PIP
Tagaran PIP
Napaccu PIP
Upper Ilagan Western Barangay PIP
Reina MercedesPIP
East Tabacal PIP San Mariano PIP
San Agustin PIP
Bantug PISVillaverde IP
Dibuluan RIP
Dabubu IPDebibi Groundwater IP
Nueva Vizcaya Bagabag IS
Mamil PIP
Iguig Alcala-Amulung PIS
Zinundungan Irrigation Extension Project
Figure 9.5.1
Resettlement Area
Layout Plan of Typical
5m
12.5m
8m
5m
40m 6m 40m 40m 40m6m 6m 40m25m
25m
625m
25m
217m
227m
LEGEND
Water Supply PIpe
Electric Line
HOUSE LAYOUT
GENERAL LAYOUT
Water Supply Tank
Water
Electric Supply
etc
Barangay HallHr
ChurchhC
0
Scale 1:1,500
20 40 60 m
School
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