4218 I 12 Bitaugan East C

II NN DD EE XX MM AA PP :: 126°20'0"E

DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 4218-I-6 4218-I-7 8°55'0"N 8°55'0"N CAGWAIT AND MARIHATAG, SURIGAO DEL SUR, PHILIPPINES CAGWAIT 4218-I-12 BITAUGAN EAST QUADRANGLE 4218-I-11 4218-I-12

126°18'0"E 126°19'0"E 126°20'0"E 126°21'0"E MARIHATAG 4218-I-17

4218-I-16 8°50'0"N 8°50'0"N

126°20'0"E

0 8°54'0"N 40 6

8°54'0"N 40

4 0

0 40 Albizzia (Aras-asan)#

Bagras μ (Tubo-tubo) # 0120.5 Provincial Road (Tubo-tubo)# Kilometers

Bangkal 2 0 (Tubo-tubo)# Cempron I # Golden Shower (Tubo-tubo) Cempron II # Gumamela (Arasa-asan)# (Tubo-tubo) (Aras-asan)# LL E G E N D : Ipil-ipil (Tubo-tubo)# ARAS-ASANP POBLACION Rubia Ornamentalis Main road P! Barangay center location (Aras-asan) Ilang-Ilang # (Aras-asan) # So. Magaling (Poblacion) San Francisco Secondary road # Purok/Sitio location (Barangay) Sampaguita (Aras-asan) (Aras-asan)# # Talisay B Camia Track; trail n School (Aras-asan)# (Aras-asan)# River v® Hospital

G Riverside Talisay A Municipal boundary Church (Unidad)# (Aras-asan)# 80 Contour (meter) Proposed relocation site

Landslide Mondalo (Unidad)

# 8°53'0"N UNIDAD 8°53'0"N P Very high landslide susceptibility Brotherhood (Unidad)# Mahayag (Unidad)# Areas usually with steep to very steep slopes and underlain by weak materials. Recent landslides, escarpments and tension cracks are present. Human initiated effects could be an aggravating factor. High landslide susceptibility Areas usually with steep to very steep slopes and underlain by weak materials. Areas with numerous old/inactive landslides. 8 0 40 Pantalan

0 (Bitaugan West) Moderate landslide susceptibility

0 #

1 Areas with moderately steep slopes. Soil creep and other indications of possible landslide occurrence are present.

0 2 0 40 4 0 Low landslide susceptibility 8

0 Gently sloping areas with no identified landslide.

Debris flow / Possible accumulation zone Areas that could be affected by landslide debris. Publacion 1 BITAUGAN EAST 0 (Bitaugan West) # 0 # Purok V P Salimbabayog (Bitaugan# East) # >>>D (Bitaugan West) Active landslide Creep # Lupalupa Purok# I (Bitaugan# West) # (Bitaugan# East) P Purok VI 60 (Bitaugan East) Inactive landslide Tension crack BITAUGAN WEST #

4 0 HHH 60 Landslide area with mitigating measure Gully 0

4 0 ///Rock fall/Rock slide prone area Riverbank erosion

6 0 Old landslide deposits 8°52'0"N

8°52'0"N PHILIPPINE SEA Recent landslide deposits Areas susceptible to ground subsidence/sinkhole development Balite (Bitaugan# West) 60 Flood

2 0 Tagbalidbid Purok I (Bitaugan# West) Very high flood susceptibility Areas likely to experience flood heights of greater than 2 meters and/or flood duration of more than 3 days. Tagbalidbid Purok II (Bitaugan West) These areas are immediately flooded during heavy rains # 0 4 4 0 0 of several hours; include landforms of topographic lows 2 4 0 such as active river channels, abandoned river channels and area along river banks; also prone to flashfloods.

0 High flood susceptibility 8

0 6

4 Areas likely to experience flood heights of greater than 1 up to 0 2 meters and/or flood duration of more than 3 days.

6 4 0 These areas are immediately flooded during heavy rains 20 of several hours; include landforms of topographic lows 60 such as active river channels, abandoned river channels

Abihaw 0 and area along river banks; also prone to flashfloods. (Bitaugan# West) 6 Moderate flood susceptibility

0 2 8 0 60 Areas likely to experience flood heights of greater than 0.5m up to 0 8 0 4 1 meter and/or flood duration of 1 to 3 days. These 80 areas are subject to widespread inundation during prolonged and 60 8 0 extensive heavy rainfall or extreme weather condition. Fluvial terraces, 0 2

0 80 alluvial fans, and infilled valleys are areas moderately subjected to flooding. 8°51'0"N 8°51'0"N 126°18'0"E 126°19'0"E 126°20'0"E 126°21'0"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