II NN DD EE XX MM AA PP :: 126°10'0"E 126°15'0"E CORTES DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 4219-III-8 4219-III-9 9°10'0"N 9°10'0"N TANDAG CITY (CAPITAL), SURIGAO DEL SUR, PHILIPPINES 4219-III-13 4219-III-14 4219-III-15 4219-III-14 BUENAVISTA QUADRANGLE TANDAG (Capital) 126°9'0"E 126°10'0"E 126°11'0"E 126°12'0"E 4219-III-18 4219-III-19 4219-III-20 9°5'0"N 9°5'0"N 126°10'0"E 9°9'0"N 9°9'0"N Purok III (Balibadon)# Purok II (Balibadon)# BALIBADON μ P 0120.5 Kilometers LL E G E N D : Main road POBLACIONP! Barangay center location So. Magaling Secondary road (Poblacion)# Purok/Sitio location (Barangay) Track; trail n School v® Hospital Mauswagon River (San# Antonio) Manga P (San Antonio)# # Nangka G Church (San# Antonio) Municipal boundary Bayabas San Antonio Elementary School (San Antonio)n ( ) 80 Contour (meter) Proposed relocation site Marang (San Antonio)# Landslide 9°8'0"N 9°8'0"N Very high landslide susceptibility 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 Malipayon aggravating factor. (San Antonio)# High landslide susceptibility 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 Everlasting (San Antonio)# indications of possible landslide occurrence are present. Low landslide susceptibility Gently sloping areas with no identified landslide. PHILIPPINE SEA Debris flow / Possible accumulation zone Macapagal (Buenavista)# Areas that could be affected by landslide debris. Active landslide >>>D Creep Buenavista Elementary School n( ) Inactive landslide Tension crack Garcia (Buenavista)# Landslide area with mitigating measure HHHGully /// Quezon Rock fall/Rock slide prone area Riverbank erosion (Buenavista)# Old landslide deposits 9°7'0"N 9°7'0"N BUENAVISTA Magsaysay P (Buenavista) Recent landslide deposits # Roxas (Buenavista)# # Quirino Areas susceptible to ground subsidence/sinkhole development Osmeña# (Buenavista) (Buenavista)# Flood Nangka# (Salvacion)# Very high flood susceptibility Avocado Areas likely to experience flood heights of greater than (Salvacion)# 2 meters and/or flood duration of more than 3 days. Papaya These areas are immediately flooded during heavy rains (Salvacion)# of several hours; include landforms of topographic lows Tisa such as active river channels, abandoned river channels (Salvacion)# and area along river banks; also prone to flashfloods. SALVACIONP 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 Sun Riser and area along river banks; also prone to flashfloods. Golden Lake (Pangi)# (Pangi)# # Golden Hills (Pangi) Star Light Golden Heart Golden Shower P# (Pangi) (Pangi)# Moderate flood susceptibility (Pangi) # PANGI Paradise (Pangi)# Lansones I Areas likely to experience flood heights of greater than 0.5m up to (San Agustin# Norte) 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 9°6'0"N subjected to flooding. 9°6'0"N 126°9'0"E 126°10'0"E 126°11'0"E 126°12'0"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 Direction of ! Mapping scale 1:10,000 Flashflood exit point ? % ALL RIGHTS RESERVED GIS Processing : receding floodwater PUBLISHED DECEMBER 2015 Lands Geological Survey Division.