II NN DD EE XX MM AA PP :: 126°0'0"E 126°5'0"E

DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 4117-II-20 4217-III-16 4217-III-17

SANTA JOSEFA AND TRENTO, DEL SUR, TRENTO 4217-III-21 PATROCONIC QUADRANGLE 4117-II-25 4217-III-21 4217-III-22 SANTA JOSEFA 8°0'0"N 8°0'0"N 126°0'0"E 126°1'0"E 126°2'0"E 126°3'0"E 4116-I-5 4216-IV-1 4216-IV-2 Purok XV Kaangayan II (Aurora)#

126°0'0"E 126°5'0"E Purok X L. Lucad BI 8°3'0"N 8°3'0"N ()# Purok X L. Lucad BII (Poblacion)# μ 0120.5

Kilometers

LL E G E N D : Main road POBLACIONP! center location

So. Magaling Secondary road (Poblacion)# Purok/Sitio location (Barangay)

Purok X Kaangayan I (Aurora)# Track; trail n School

River v® Hospital Purok IX Upper Lucad (Poblacion)# G Purok VIII Santa Isabel Municipal boundary Church (Santa# Isabel) 80 Contour (meter) Proposed relocation site

Landslide

Purok VIII Kaangayan I

Purok IX Kaangayan I 8°2'0"N Purok VI (Aurora) (Aurora)# 8°2'0"N # (Tapaz)# Very high landslide susceptibility Areas usually with steep to very steep slopes and underlain by Purok VII weak materials. Recent landslides, escarpments and tension (Aurora)# cracks are present. Human initiated effects could be an aggravating factor. High landslide susceptibility Purok VIA Santa Isabel (Santa# Isabel) Areas usually with steep to very steep slopes and underlain by weak materials. Areas with numerous old/inactive landslides. Moderate landslide susceptibility Areas with moderately steep slopes. Soil creep and other indications of possible landslide occurrence are present.

Purok V (Tapaz)# Low landslide susceptibility Purok VIB (Santa# Isabel) Gently sloping areas with no identified landslide.

Debris flow / Possible accumulation zone

Purok XIIIA Areas that could be affected by landslide debris. (Poblacion)# Active landslide >>>D Creep

Purok VI Inactive landslide Tension crack (Aurora)# Landslide area with mitigating measure HHHGully

///Rock fall/Rock slide prone area Riverbank erosion 4 0 40 Old landslide deposits Purok V 8°1'0"N

0 (Aurora) 4 8°1'0"N # 40 Recent landslide deposits Areas susceptible to ground subsidence/sinkhole development

0 4 Purok IV Flood (Aurora)# Very high flood susceptibility Areas likely to experience flood heights of greater than Kaangayan Primary School 2 meters and/or flood duration of more than 3 days. Purok III (Aurora) Purok II (Aurora) nP 0 These areas are immediately flooded during heavy rains 4 (Aurora) nP # # DayCare Center SANTA ISABEL of several hours; include landforms of topographic lows AURORA (Angas) 40 40 such as active river channels, abandoned river channels

Purok VI and area along river banks; also prone to flashfloods. (Santa Isabel) 0

# 4 40 0 4 4 0 High flood susceptibility Areas likely to experience flood heights of greater than 1 up to 40 4 2 meters and/or flood duration of more than 3 days. 0 40 4 0 These areas are immediately flooded during heavy rains

4

0 40 60 of several hours; include landforms of topographic lows Purok II Purok I (San Jose) 4 # (Aurora) 0 such as active river channels, abandoned river channels # and area along river banks; also prone to flashfloods.

0 4 40 Moderate flood susceptibility 6 0

4 0 Areas likely to experience flood heights of greater than 0.5m up to 40 1 meter and/or flood duration of 1 to 3 days. These 0 4 6 0 0 areas are subject to widespread inundation during prolonged and 4

4 0 extensive heavy rainfall or extreme weather condition. Fluvial terraces, alluvial fans, and infilled valleys are areas moderately

8°0'0"N subjected to flooding. 8°0'0"N 126°0'0"E 126°1'0"E 126°2'0"E 126°3'0"E Low flood susceptibility Areas likely to experience flood heights of 0.5 meter or less and/or flood duration of less than 1 day. These areas include Data Sources : Coordinate System : low hills and gentle slopes. They also have sparse to MGB Geohazard Assessment Team moderate drainage density. DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES Spheroid : ...... Clark 1866 Lands Geological Survey Division Projection : ...... Transverse Mercator Geosciences Division MGB Regional Office XIII MINES AND GEOSCIENCES BUREAU Datum : ...... 1911 Direction of 1.2 National Mapping and Resource Information Authority ? Flood depth (meter) North Avenue, Diliman, City ? rising floodwater

Direction of ! Mapping scale 1:10,000 Flashflood exit point ? % ALL RIGHTS RESERVED GIS Processing : receding floodwater PUBLISHED DECEMBER 2015 Lands Geological Survey Division