Detailed Landslide and Flood Hazard Map of Basilisa, San

II NN DD EE XX MM AA PP :: 125°35'0"E

LIBJO (ALBOR) DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 4121-III-11 4121-III-12 4121-III-13 BASILISA, SAN JOSE, AND CAGDIANAO, DINAGAT ISLANDS, PHILIPPINES BASILISA (RIZAL) CAGDIANAO 10°5'0"N 4121-III-17 NAVARRO QUADRANGLE 10°5'0"N 4121-III-16 4121-III-17 4121-III-18

125°33'0"E 125°34'0"E 125°35'0"E 125°36'0"E 4121-III-21 4121-III-22 4121-III-23

SAN JOSE Purok II Aguinaldo# 125°30'0"E 125°35'0"E (Villa Pantinople)P# 10°6'0"N

10°6'0"N VILLA PANTINOPLE

Dela Concepcion Elementary School Purok V New Moises Purok VI Villa Trinidad Purok III Don Ruben (New Nazareth) (Villa Pantinople)n (Villa Pantinople)# (New Nazareth)# # Purok IX Rubenian Purok VII Triple-R (Rita Glenda)# (Sering)#

Purok VII Rubenian (New Nazareth) μ # 0120.5

Kilometers Purok III (Edera) Purok III Getsemani # (Santa# Monica) Purok VI Bonifacio (Diegas)# Edera National High School Purok IV Mabuhay L E G E N D : (Edera)n (New Nazareth)# L E G E N D : POBLACION Purok II Rizal Main road ! Barangay center location (Edera)# P So. Magaling Jariol Elementary School (Poblacion) Edera Elementary School New Nazareth Elementary School (Santa Monica) Secondary road # Purok/Sitio location (Barangay) (Edera) n (Nazareth) n n n New Nazareth National High School Track; trail n Purok I (Nazareth) Purok II Sampaguita School (Edera) Purok I Purok II Magsaysay (New Nazareth)# P# (Santa Monica) (Santa Monica) # P # River v® Hospital EDERA SANTA MONICA Purok III Quezon (New Nazareth)#P NEW NAZARETH Municipal boundary G Church

80 Contour (meter) Proposed relocation site Purok I Bethlehem (New Nazareth)# Purok VII Magsaysay (Geotina)# Purok V Lapu-lapu Landslide (Navarro) # Purok VI Hilantagaan (Geotina)

# 10°5'0"N

10°5'0"N Very high landslide susceptibility Purok III Bonifacio Purok IV Purok I Rizal (Geotina)# (Navarro)# (Navarro)# Geotina Elementary School Areas usually with steep to very steep slopes and underlain by Purok II BonifacioP Navarro Elementary School (Geotina) weak materials. Recent landslides, escarpments and tension (Navarro) n # n (Navarro) Purok V Mahayahay cracks are present. Human initiated effects could be an (Geotina)# Purok IV Rizal P (Geotina) Purok III Magsaysay # aggravating factor. (Navarro)# GEOTINA Purok II Aguinaldo (Geotina)# High landslide susceptibility Purok I Mabini (Geotina)# 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 VII Bilabid (Navarro)# Low landslide susceptibility Gently sloping areas with no identified landslide. Purok VI Baclayan (Navarro) # Debris flow / Possible accumulation zone Areas that could be affected by landslide debris.

Active landslide >>>D Creep Inactive landslide Tension crack Purok V Mabini (Ferdinand)# n Ferdinand Elementary School Landslide area with mitigating measure HHHGully Purok IV Bonifacio (Ferdinand) Basilisa Municipal Health Office (Ferdinand) ( ) P# v® FERDINAND ///Rock fall/Rock slide prone area Riverbank erosion Purok III Magsaysay (Ferdinand)# Old landslide deposits 10°4'0"N 10°4'0"N Recent landslide deposits SURIGAO STRAIT Purok II Rizal Purok II Doka (Ferdinand)# Purok I Mahogany (Tag-abaca)# Areas susceptible to ground subsidence/sinkhole development Purok I Lapu-Lapu (Tag-abaca) (Ferdinand)# # PurokP III Sodyang (Tag-abaca)# TAG-ABACA n Flood Tag-abaca Elementary School (Tag-abaca) Very high flood susceptibility

Tag-abaca National High School Areas likely to experience flood heights of greater than (Tag-abaca)n 2 meters and/or flood duration of more than 3 days. These areas are immediately flooded during heavy rains Purok VIII Lawaan of several hours; include landforms of topographic lows (Tag-abaca)# such as active river channels, abandoned river channels and area along river banks; also prone to flashfloods.

Purok IX Magkuno (Tag-abaca)# High flood susceptibility Areas likely to experience flood heights of greater than 1 up to 2 meters and/or flood duration of more than 3 days. These areas are immediately flooded during heavy rains of several hours; include landforms of topographic lows such as active river channels, abandoned river channels and area along river banks; also prone to flashfloods. Moderate flood susceptibility Areas likely to experience flood heights of greater than 0.5m up to 1 meter and/or flood duration of 1 to 3 days. These areas are subject to widespread inundation during prolonged and extensive heavy rainfall or extreme weather condition. Fluvial terraces, alluvial fans, and infilled valleys are areas moderately subjected to flooding. 10°3'0"N 10°3'0"N 125°33'0"E 125°34'0"E 125°35'0"E 125°36'0"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 : ...... Luzon 1911 Direction of 1.2 National Mapping and Resource Information Authority ? Flood depth (meter) North Avenue, Diliman, Quezon City ? rising floodwater