II NN DD EE XX MM AA PP :: DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 125°40'0"E 125°45'0"E SIBAGAT, AGUSAN DEL SUR; 4118-IV-13 4118-IV-14 4118-IV-15 SIBAGAT BUTUAN CITY (Capital) 8°50'0"N AND BUTUAN CITY (CAPITAL), AGUSAN DEL NORTE, PHILIPPINES 8°50'0"N 4118-IV-18 4118-IV-19 4118-IV-20 4118-IV-19 MAHAYAHAY QUADRANGLE 125°39'0"E 125°40'0"E 125°41'0"E 125°42'0"E BAYUGAN 4118-IV-23 4118-IV-24 4118-IV-25 LAS NIEVES 125°40'0"E 8°51'0"N 8°51'0"N Purok VII (Mahayahay)# Purok VI (Mahayahay)# Purok IX (Mahayahay) Purok V Purok IV # Purok IV (Mahayahay)# (Mahayahay) μ # (Anahawan)n# 0120.5 Anahawan Elementary School Purok XI Purok III (Anahawan) (Mahayahay) Purok II (Mahayahay) # (Mahayahay) # Kilometers PANAHAWAN P # MAHAYAHAY Purok VII Purok I (Anahawan) (Mahayahay) # Purokn X # (Mahayahay)# LL E G E N D : POBLACION Purok VI Main road P! Barangay center location (Anahawan)# Purok VIII So. Magaling (Mahayahay)# Secondary road (Poblacion)# Purok/Sitio location (Barangay) Track; trail n School River v® Hospital Purok I (Anahawan)# Municipal boundary G Church 80 Contour (meter) Proposed relocation site Landslide 8°50'0"N 8°50'0"N Very high landslide susceptibility Purok V (Anahawan)# Purok XIV Areas usually with steep to very steep slopes and underlain by (Poblacion)# weak materials. Recent landslides, escarpments and tension Purok XIII Purok XIIA cracks are present. Human initiated effects could be an (Poblacion) (Poblacion)# # aggravating factor. FSUU High School (Poblacion)n High landslide susceptibility Purok XII (Poblacion)# Areas usually with steep to very steep slopes and underlain by weak materials. Areas with numerous old/inactive landslides. Moderate landslide susceptibility Purok X Purok XI (Poblacion) # (Poblacion)# Areas with moderately steep slopes. Soil creep and other n n Sibagat Central Elementary School Sibagat National High School of Home Ind Sibagat Rural Health Unit (Poblacion) indications of possible landslide occurrence are present. (Poblacion) v® Purok# IX (Poblacion)# Low landslide susceptibility Purok V Purok VII (Poblacion) Gently sloping areas with no identified landslide. (Poblacion)# # Purok VI (Tag-uyango) Purok VI Purok V # Purok VII (Tag-uyango) (Poblacion)#P (Tag-uyango)# # Debris flow / Possible accumulation zone Purok II POBLACION Purok IV (Poblacion)# (Poblacion)# Areas that could be affected by landslide debris. Purok III (Poblacion)# Active landslide >>>D Creep Inactive landslide Tension crack Landslide area with mitigating measure HHHGully Purok I (Poblacion) # ///Rock fall/Rock slide prone area Riverbank erosion Old landslide deposits 8°49'0"N 8°49'0"N Recent landslide deposits Areas susceptible to ground subsidence/sinkhole development Flood Purok I Very high flood susceptibility (Kauswagan) # Areas likely to experience flood heights of greater than # Purok III (San Vicente)# 2 meters and/or flood duration of more than 3 days. Purok IV P (Kauswagan) Purok III Purok II These areas are immediately flooded during heavy rains (Kauswagan) (San Vicente)# SAN VICENTE #P of several hours; include landforms of topographic lows KAUSWAGAN such as active river channels, abandoned river channels Purok II (Kauswagan)# and area along river banks; also prone to flashfloods. High flood susceptibility Areas likely to experience flood heights of greater than 1 up to Kauswagan Primary School Purok VII 2 meters and/or flood duration of more than 3 days. (Kauswagan) (San Vicente) n # 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. 8°48'0"N 8°48'0"N 125°39'0"E 125°40'0"E 125°41'0"E 125°42'0"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.