Detailed Landslide and Flood Hazard Map of Bislig City, Surigao Del Sur, Philippines 4217-Ii-2 Sibaroy Quadrangle
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II NN DD EE XX MM AA PP :: 126°20'0"E NAWAN DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 4217-I-21 4217-I-22 4217-I-23 8°15'0"N BISLIG CITY, SURIGAO DEL SUR, PHILIPPINES 8°15'0"N 4217-II-1 4217-II-2 4217-II-3 4217-II-2 SIBAROY QUADRANGLE BISLIG CITY 126°18'0"E 126°19'0"E 126°20'0"E 126°21'0"E 4217-II-6 4217-II-7 4217-II-8 Purok I (Sibaroy) 126°20'0"E # 8°15'0"N 8°15'0"N μ 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 River v® Hospital Municipal boundary G Church 80 Contour (meter) Proposed relocation site Landslide 8°14'0"N 8°14'0"N Very high landslide susceptibility Purok VII Pung-o (San Fernando) # 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. Moderate landslide susceptibility Purok VIA (San Fernando)# Areas with moderately steep slopes. Soil creep and other indications of possible landslide occurrence are present. Purok V BISLIG BAY Low landslide susceptibility (San Fernando)# Purok I Gently sloping areas with no identified landslide. San Fernando Elem. School (Poblacion) (San Fernando) # n Purok II (Poblacion) Debris flow / Possible accumulation zone SAN FERNANDOP Purok III # (San Fernando) # Purok III # (Poblacion) Areas that could be affected by landslide debris. Purok IV Purok I (Poblacion)# (San Fernando)# Active landslide >>>D Creep # Day Care Center Purok IVn Purok V (Poblacion) (San Fernando) n Inactive landslide Tension crack (Poblacion)P POBLACION Purok II # Purok VIII Piapi (San Fernando) Bislig Central Elem. School # (Poblacion) n # n (Poblacion) Landslide area with mitigating measure HHHGully Piapi DayCare Center (Poblacion) Purok VI (Poblacion)# ///Rock fall/Rock slide prone area Riverbank erosion Purok VII Purok IX Catanduan (Poblacion)# (Poblacion)# Old landslide deposits 8°13'0"N 8°13'0"N Catanduan DayCare Center (Poblacion)n Recent landslide deposits Areas susceptible to ground subsidence/sinkhole development Purok XI Flood (Poblacion)# Purok X Josefa Village Very high flood susceptibility (Poblacion)# 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 Bislig City Nat'l High School Bisligv® District Hospital such as active river channels, abandoned river channels (Poblacion)n and area along river banks; also prone to flashfloods. 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 Purok VI Baucaue (San# Isidro) 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. 8°12'0"N 8°12'0"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 Direction of ! Mapping scale 1:10,000 Flashflood exit point ? % ALL RIGHTS RESERVED GIS Processing : receding floodwater PUBLISHED DECEMBER 2015 Lands Geological Survey Division.