Integration of Flood Control and Basin Development in the Cagayan River Basin

Disasters have occured frequently in the Cagayan river basin : Disaster = Hazards ~Vulnerability Hazards : Flood, Sedimentation and Bank Erosion, Typhoon, Drought Vulnerability : Damage of Casualty and Assets, Low Productivity, Lack of Integrated Organization and Institution, and Low Capability

Target in Year 2020 4 th lowest at present

Watershed Landuse/Irrigation GRDP: National AFMA Flood Control Management Development Average(excluding NCR)

Direct Measures of Structural and Non-Structural CEZA

Mitigation of Hazards by Structural Measures Reduction of Vulnerability by Non-Structural Measures Watershed Improvement of Flood Forecasting Improvement of Disaster Flood Control Mangement and Warning System Management System Resettlement Cauayan Regional Agri-industrial Growth Center Multi-sectoral Organization PMO-DPWH Leading Implementing Structure Active Participation by LGUs, Communities and NGO

Supporting Measures Agri. Production

Improvement of Institutional Organizational Awareness Agro-industry Funding System Improvement Improvement Capacity Building Education Fishery

Sustainability of Disaster Prevention Capacity

Operation, Maintenance and Monitoring and Updating Repair System Babuyan Channel

Aparri LEGEND 1 River Course N Road 2 Basin Boundary Subbasin of Major Tributary 3 Bank erosion Lal-lo 4 Magapit Scale Magapit Br. 0 10 20 30 km r 5 e v i Gattaran R er mon Riv n Dum s a 6 in y ta a n g u a o C M a er Nassiping ll i r rd e o iv C R 7 o Pared River ic Alcala h C

8 Amulung

9 s

n i

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ug M Tuao 21 ueg ar e 20 ao r 11 Riv d

e a

18 Solana r

M

a

Buntun Br. r

19 r

e i

12 S Tuguegarao Enrile 13 14 15

Pinacanauan River

16 17

Cabagan

r

e v

i r R e

iv

Mallig n R

a i

y in

a au g Tumauini m

a Tu C

r e iv R ig ll a

M

r

Ilagan e

er v v i

u Ri

iff R

S

n

a

g

a

l Gamu Br. I

Naguilian Br. The Feasibility Study of the Flood Control Project for the Lower Cagayan River Figure 10.4.1 in the Republic of the Philippines Location of Bank Protection Works JAPAN INTERNATIONAL COOPERATION AGENCY in the Lower Cagayan River Bank Protection Works Type A

Natural bank

1.5

1 Gabion (t=100cm) Boulder Riprap (Ave.dia=20cm) Gravel fill Filter mattress 1.5 Minimum thickness 2m 1

Bank Protection Works Type B

3 Wooden Pile L=3m 1 Gabion (t=30cm)

Paving with cobble-stone(t=40cm) Ave.dia=15cm Gravel fill(t=20cm) Filter mattress

Bank Protection Works Type C 3

1

Paving with cobble-stone(t=40cm) 2.5 Gravel fill(t=20cm) 1 Filter mattress

Gabion (t=50 or 30cm) Gravel fill(t=20cm) Filter mattress

Spur Dike Type D

Cross Section of Spur Dike

Gabion t=1m Gabion t=30cm 1 0510 20 m 5 The Feasibility Study of the Flood Control Project for the Lower Cagayan River Figure 10.4.2 in the Republic of the Philippines Standard Design of Bank Protection Works JAPAN INTERNATIONAL COOPERATION AGENCY N

Cagayan River Basin Lower Reach Dike Babuyan Channel P H I A L I Apayao-Abulug ISIP E P S P I N N Santa Ana O E

Z S E U Agro-industry Development  A L Aparri Babuyan Channel by CEZA

Magapit PIS (CIADP) Lallo West PIP Zinundungan IEP MINDANAO SEA Lal-lo

K EY MAP Magapit Alcala Amulung Nassiping PIP Evacuation system (FFWS, River West PIP Dummon S evacuation center), Resettlement, N

CAGAYAN I

Supporting Measures, Nassiping A

r T e Pa

Sto. Niño PIP v re N Reforestation, Sabo Works i d R R iv Alcala er U are also included in the o ic O Iguig-Alcala-Amulung PIS h

Reviewed Master Plan. Gabut COC C M

Amulumg (CIADP)

E R

Lower Chico RIS D

A Philippine Sea Tuao Iguig

T San Isidro COC M ug ueg ara A

o R i R APAYAO ver Pinacanauan RIS

Solana PIS REP R

Solana E

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uma r T

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L Tanudan Hydropower Project a

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F8 Legend Dibuluan RIP Basin Boundary Matuno No.1 Dam Provincial Boundary Dabubu IP r e Major Town v NUEVA VIZCAYA i R Dike m QUIRINO la a Cut-off Channel (COC) Debibi Groundwater IP d AURORA d Bank Protection A Diduyon Hydropower Project er Existing or On-going iv Irrigation Area R an Proposed ay ag Irrigation Area C Existing or On-going Dam and Reservoir Abaca Dam Proposed Dam and Reservoir Denip Dam Transbasin or SCALE Casecnan Headrace Tunnel 0 10 20 30 40 50 km Transmission Project Powerhouse

Figure 10.7図.1 8� 見直しマスタープランの� Locatio�n of Prプojロecジtsェ inク Rトe位vie置w図ed Master Plan

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The Feasibility Study of the Flood Control Project for the Lower Cagayan River Figure 10.9.1 in the Republic of the Philippines Implementation Schedule for  JAPAN INTERNATIONAL COOPERATION AGENCY Reviewed Master Plan

F89

The Feasibility Study of the Flood Control Project JAPAN INTERNATIONAL COOPERATION AGENCY in the Republic of the Philippines

for the Lower Cagayan River CAGAYAN RIVER BASIN DEVELOPMENT AUTHORITY Regional Development Council

Provincial Project Coordination Consultant Development Council Committee

City/Municipality Development Council

F90 PMO Watershed PMO Flood Control PMO Land Use Management PMO Special Entities Basin Development Figure 10.10.1 Management ·DPWH (Irrigation Development) ·AFMP Organization Chart of CagayanRiver ·DENR ·NWRB ·DA ·CEZA ·LGUs · PAGASA ·NIA ·LGUs ·OCD

Sub-PMO Sub-PMO Sub-PMO Sub-PMO Resettlement Lower Cagayan Flood Forecasting Evacuation & Livelihood Flood Control & Warning System System Program Project Project OCD/RDCC/ LGUs/DA DPWH/LGUs PAGASA/DPWH/ C-MDCC NIA/NPC

LEGEND Mabanguc Dike Babuyan Channel Road Aparri Hilly Land Mabanguc Diking System Camalaniugan Dike Basin Boundary Boundary of Municipality Camalaniugan Municipality Bank Protection N Phase 1 Implementation Lal-lo Phase 2 Implementation Lal-lo Dike Phase 3 Implementation Catugan Sur Phase 4 Implementation Catugan Dike : Non-structural measures with tree zone (evacuation system and Magapit resettlement area development) and supporting measures Lasam Gattaran Dike er Riv are included. mon Dum Gattaran Lasam Dike

Nassiping Dike Nassiping

P ared Rive Alcala r Alcala Amulung West Santo Nino Pump Irrigation Project Amulung Dike Gabut COC Amulung

San Isidro COC

r

e

v

i R Iguig Dike

Iguig

o (Stage 1)

c i

h (Stage 2) T C ugu ega rao Alcala-Buntun Dike Ri ver with tree zone Solana

Tuguegarao Tuguegarao Dike Tuguegarao COC with tree zone

Enrile Enrile Dike with tree zone Pinacanauan River

Scale 0 5 10 15 20 25 km

TThhee F Feeaassibibiliiltiyty S Stutuddyy o of ft hthee F Flolooodd C Coonntrtrool lP Prroojejecctt Figure 11.2.1 foforr t hthee L Loowweerr C Caaggaayyaann R Riviveerr Figure 11

in the Republic of the Philippines Locatio. n of Flood Control Projects in the Republic of the Philippines R

Location of Pro jects for the Feasibility Study

JJAAPPAANN I NINTTEERRNNAATTIOIONNAALL C COOOOPPEERRAATTIOIONN A AGGEENNCCYY Subject tn o F/S a

y

a

g

a F91 C Visual Image of Earth Dike and Riverbank Tree Zone

Boundary of Administrative River Zone

Riverbank Tree Zone 7 m Dike Free Board

Design High Water Level 10 m

Drain Low Water Channel 30 m 4 m Maintenance Road

Note; Dike Dimensions Riverbank tree zone is recommended in the viewpoints of Free Design Discharge Top Width nature-oriented river improvment works and ecological Board landscape improvement in the river area. (cu.m/s) (m) (m) The tree zone is constructed along dike in the upstream of Alcala provided that proper river management and maintenance systems are estabilished in the DPWH Region 2 office and 5,000 to 10,000 1.5 6 related LGUs. more than 10,000 2 7 LEGEND Mabanguc Dike Babuyan Channel Road Aparri Hilly Land Mabanguc Diking System Camalaniugan Dike Basin Boundary Boundary of Municipality Camalaniugan Municipality N Lal-lo Lal-lo Dike Catugan Sur Catugan Dike with tree zone Magapit

Lasam Gattaran Dike er Riv mon Dum Gattaran Lasam Dike

Nassiping Dike Nassiping

P ared Rive Alcala r Alcala Amulung West Santo Nino Pump Irrigation Project Amulung Dike Gabut COC Amulung

San Isidro COC

r

e

v

i R Iguig Dike

Iguig

o (Stage 1)

c i

h (Stage 2) T C ugu ega rao Alcala-Buntun Dike Ri ver with tree zone Solana

Tuguegarao Tuguegarao Dike Tuguegarao COC with tree zone

Enrile Enrile Dike with tree zone Pinacanauan River

Scale 0 5 10 15 20 25 km

TThhee F Feeaassibibiliiltiyty S Stutuddyy o of ft hthee F Flolooodd C Coonntrtrool lP Prroojejecctt foforr t hthee L Loowweerr C Caaggaayyaann R Riviveerr FiFgiugruer 1e1 11.2.3

in the Republic of the Philippines Location of F. lood Control Projects  in the Republic of the Philippines R

Location of Pro jects for the Feasibility Study

JJAAPPAANN I NINTTEERRNNAATTIOIONNAALL C COOOOPPEERRAATTIOIONN A AGGEENNCCYY in the Lower Cn agayan a

y

a

g

a C

20 Qin Q out 18 WLi m3)

on WLo i l l 16 A mi V(

V , 14 km 2) ( A

12 ,

10 10m 3/s) ( 8 Qout Qout

n, 6 Qi

, ) 4 masl (

W Lo 2

,

WLi 0 1 25 49 73 97 121 145 169 193 Time (hour) Inundation in D2 Area at the time of the C agayan River flood with 25-year probability Alcala Amulung West Pump IrrigationProject

Qin: Discharge flowing into Drainage Area (DA) Qout: Discharge drained from DA through sluice WLi, H: Inside inundation water level WLo: Outside or Cagayan River flood water level A: Inundated area V: Inundated volume

The Feasibility Study of the Flood Control Project Figure 11.3.2 for the Lower Cagayan River in the Republic of the Philippines Inundation in Drainage Area 2 of JAPAN INTERNATIONAL COOPERATION AGENCY AAWPIP

The FeasibilityStudyoftheFlood Control Project JAPAN INTERNATIONAL COOPERATION AGENCY

Magapit Br. Magapit Pumping Sta. Buntun Br. Pinacanauan R.(R) Zinundungan R.(L) Chico R.(L) Pared R.(R) Amulung Pumping Sta. Solana Pumping Sta. Sta. Maria Br. Aparri Dummon R.(R) Nassiping Alcala Iguig Pumping Sta. Tuguegarao R.(R) Cabagan in theRepublicofPhilippines 40 for theLowerCagayanRiver

35

30

25

20

15

10

5

2.67

0.70 0 -0.12

-2.37 -5 Elevation of Embankment H.W.L Figure 12.2.2 Elevation (EL m) Elevation (EL 25-year Flood Water Level -10 Left Bank Elevation Longitudinal Profile ofLower CagayanRiver Right Bank Elevation -15 Mean River Bed Deepest River Bed -20 Design River Bed Suction Pipe Level

-25 Gabut San Isidro Tuguegarao COC COC COC

-30

HWL Slope 1/1300 1/4500 1/5300 1/8500 1/5600

Design River Bed Slope 1/16000 1/5500

Top of Dike (EL m) 9.30 23.51 24.17 24.86 26.97 5.27 6.89 8.14 10.54 11.79 12.89 14.09 14.99 15.80 16.98 18.05 19.11 20.08 21.03 21.62 22.88

H.W.L.

(EL3.27 m) 4.89 6.14 7.30 8.54 9.79 10.89 12.09 12.99 13.80 14.98 16.05 17.11 18.08 19.03 19.62 20.88 21.51 22.17 22.86 24.97

Design River

Bed (EL m) 1.16 2.07 4.03 4.98 6.00 7.01 9.13 -4.91 -4.61 -4.26 -3.94 -3.59 -3.24 -2.92 -2.52 -2.22 -1.95 -1.56 -1.21 -0.86 -0.31

Commulative Distance (km) 1.19 5.94 11.56 16.80 22.37 27.96 33.04 39.39 44.18 48.52 54.78 60.47 65.99 71.78 79.81 84.84 95.60 100.87 106.45 112.00 123.66 128.72 134.54 139.70 146.78 151.69

Station 0+000 5+000

Number H:1/750000 30+000 45+000 50+000 55+000 60+000 65+000 80+000 85+000

10+000 15+000 20+000 25+000 35+000 40+000 V:1/750 CG CG CG CG CG CG CG CG CG100+000 CG105+000 CG110+000 CG115+000 CG130+000 CG135+000 CG140+000 CG145+000 CG150+000 CG155+000 CG CG CG CG CG CG CG CG