Detailed Landslide and Flood Hazard Map of Mainit And

II NN DD EE XX MM AA PP :: 125°25'0"E 125°30'0"E

TUBOD DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 4020-II-19 4020-II-20 4120-III-16 MAINIT MAINIT AND MALIMONO, SURIGAO DEL NORTE, PHILIPPINES

MALIMONO 4020-II-25 MATINAO QUADRANGLE 4020-II-24 4020-II-25 4120-III-21 ALEG 9°30'0"N 125°27'0"E 125°28'0"E 125°29'0"E 125°30'0"E 9°30'0"N 4019-I-4 4019-I-5 4119-IV-1

Matin-ao National High School (Matin-ao)n 125°25'0"E 125°30'0"E 9°33'0"N 9°33'0"N Silangan II (Matin-ao) # Santan (San Isidro) # Sampaguita Kalipayan (San Isidro) # (San# Isidro) Orchids (San# Isidro) Purok III (Tolingon)#

Magtatanim μ (Matin-ao)# 0120.5

Kilometers

Purok I (Villa# Riza) Purok II Purok VII (San Francisco) (Villa# Riza) # LL E G E N D : Purok VI (Villa Riza) # Main road POBLACIONP! Barangay center location

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

Purok III Arayat (Villa Riza) # (Matin-ao)# Track; trail n School

River v® Hospital

Municipal boundary G Church

80 Contour (meter) Proposed relocation site

Purok VI (San Francisco)# Landslide 9°32'0"N

9°32'0"N Very high landslide susceptibility Areas usually with steep to very steep slopes and underlain by Purok V weak materials. Recent landslides, escarpments and tension (San Francisco)# SAN FRANCISCO cracks are present. Human initiated effects could be an P aggravating factor. High landslide susceptibility

Purok IV Areas usually with steep to very steep slopes and underlain by (San Francisco)# weak materials. Areas with numerous old/inactive landslides.

Purok III Moderate landslide susceptibility (San Francisco)# Areas with moderately steep slopes. Soil creep and other San Francisco Elem School indications of possible landslide occurrence are present. (San Francisco)n Low landslide susceptibility Purok II (San Francisco) # Gently sloping areas with no identified landslide.

Debris flow / Possible accumulation zone Areas that could be affected by landslide debris. Purok I (San Francisco)# Active landslide >>>D Creep Inactive landslide Tension crack

Landslide area with mitigating measure HHHGully

///Rock fall/Rock slide prone area Riverbank erosion LAKE MAINIT Old landslide deposits 9°31'0"N 9°31'0"N Recent landslide deposits Areas susceptible to ground subsidence/sinkhole development

Flood

Very high flood susceptibility Mansayao Elem School (Mansayao)n Areas likely to experience flood heights of greater than 2 meters and/or flood duration of more than 3 days.

Purok I These areas are immediately flooded during heavy rains (Mansayao)# of several hours; include landforms of topographic lows Purok II such as active river channels, abandoned river channels (Mansayao)# Purok IV and area along river banks; also prone to flashfloods. (Mansayao)# Purok III #(Mansayao)P MANSAYAO 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. 9°30'0"N 9°30'0"N 125°27'0"E 125°28'0"E 125°29'0"E 125°30'0"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