Detailed Landslide and Flood Hazard Map of Marihatag

II NN DD EE XX MM AA PP :: 126°15'0"E 126°20'0"E

DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 4218-IV-15 4218-I-11 4218-I-12 CAGWAIT MARIHATAG AND CAGWAIT, SURIGAO DEL SUR, PHILIPPINES 8°50'0"N 4218-I-16 MARARAG QUADRANGLE 8°50'0"N 4218-IV-20 4218-I-16 4218-I-17 MARIHATAG

126°15'0"E 126°16'0"E 126°17'0"E 126°18'0"E 4218-IV-25 4218-I-21 4218-I-22 SAN AGUSTIN

126°15'0"E 126°20'0"E 8°51'0"N Purok V 8°51'0"N (San #Pedro) μ 0120.5

Kilometers

Purok VI (San #Pedro) LL E G E N D : POBLACION Barangay center location Macopa Main road P! (Mararag) # So. Magaling Secondary road (Poblacion)# Purok/Sitio location (Barangay)

Track; trail n School

River v® Hospital

Brgy.Site Municipal boundary G Church (Mararag) Pinya # (Mararag) Marang # (Mararag)# 80 Contour (meter) Proposed relocation site

Landslide Avocado (Mararag)# Mangga #P MARARAG 8°50'0"N 8°50'0"N (Mararag)# Santol Very high landslide susceptibility (Mararag) Kabac Areas usually with steep to very steep slopes and underlain by (Mararag)# Guyavano weak materials. Recent landslides, escarpments and tension (Mararag)# 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 Nangka (Mararag)# 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.

Low landslide susceptibility Saging (Mararag)# Gently sloping areas with no identified landslide.

Debris flow / Possible accumulation zone Areas that could be affected by landslide debris.

Active landslide >>>D Creep

Caimeto Inactive landslide Tension crack (Mararag)# Landslide area with mitigating measure HHHGully

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

Bule (Bayan)# Old landslide deposits 8°49'0"N Avocado Kamansi 8°49'0"N (Bayan)n # (Bayan)# Recent landslide deposits Durian PBAYAN (Bayan)# Nangka Areas susceptible to ground subsidence/sinkhole development Caymito (Bayan) (Bayan) # Bayabas # (Bayan)# Flood Mangga Casting Boongon (Bayan)# (Bayan)# (San# Isidro) n Very high flood susceptibility Mabog Daycare Center ( ) Areas likely to experience flood heights of greater than 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.

High flood susceptibility Curvada (Bayan)# Areas likely to experience flood heights of greater than 1 up to Pagbahanan III 2 meters and/or flood duration of more than 3 days. (Poblacion)# These areas are immediately flooded during heavy rains Purok Miramar IA Miramar I (Poblacion) (Poblacion) of several hours; include landforms of topographic lows Pagbahanan II # # (Poblacion) Holy# Child Academy such as active river channels, abandoned river channels # ( ) Marihatag District Hospital Marihatag Central Elementary School n v® ( ) n and area along river banks; also prone to flashfloods. Pagbahanan I Sampaguita (Poblacion) Kauswagan I (Poblacion)# Moderate flood susceptibility # (Poblacion) # # Katipunan (Poblacion)# Areas likely to experience flood heights of greater than 0.5m up to Marihatag Rural Health Unit Kauswagan II v® POBLACION# 1 meter and/or flood duration of 1 to 3 days. These (Poblacion)# P Alegria areas are subject to widespread inundation during prolonged and (Poblacion) # extensive heavy rainfall or extreme weather condition. Fluvial terraces, alluvial fans, and infilled valleys are areas moderately subjected to flooding. 8°48'0"N 8°48'0"N 126°15'0"E 126°16'0"E 126°17'0"E 126°18'0"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