II NN DD EE XX MM AA PP :: DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 125°35'0"E CABADBARAN, REMEDIOS T. ROMUALDEZ, AND MAGALLANES, 4119-III-11 4119-III-12 4119-III-13 CABADBARAN 9°5'0"N 9°5'0"N AGUSAN DEL NORTE, PHILIPPINES 4119-III-16 4119-III-17 4119-III-18 4119-III-17 SANGHAN QUADRANGLE REMEDIOS T. ROMUALDEZ BUTUAN CITY (Capital) 125°33'0"E 125°34'0"E 125°35'0"E 125°36'0"E MAGALLANES 4119-III-21 4119-III-22 4119-III-23 Purok X (Calamba)# 125°30'0"E 125°35'0"E Purok I Cambisay SORIANO 9°6'0"N 9°6'0"N (Soriano) P # Soriano Elementary School n( ) Purok V n Soriano Elem. School (Soriano)# (Soriano) Purok IV Calulutay # (Calamba)# Purok VI Purok IV Purok IV Bugho (Soriano) (Soriano)# (Bay-ang)# μ 0120.5 Kilometers Purok X Purok VII (La Union) # (Sanghan)# LL E G E N D : POBLACION 20 Main road P! Barangay center location So. Magaling Purok VIII Purok VIII (Antonio Luna) (Poblacion) (Sanghan)# # Secondary road # Purok/Sitio location (Barangay) Purok VI (Antonio Luna) Purok IV # Track; trail n School (Sanghan)# Purok IV (Antonio# Luna) Purok II Purok V River v® Hospital (Sanghan)#P (Antonio# Luna) Purok I Sangha Elementary School (Sanghan)# n ( ) Municipal boundary G Church Purok III (Sanghan) Purok IX # Proposed relocation site (Sanghan)# 80 Contour (meter) Purok I Purok II (Antonio Luna) # (Antonio# Luna) ANTONIO LUNA P# Landslide Purok XI Purok III (La Union) # (Antonio Luna) 9°5'0"N 9°5'0"N Very high landslide susceptibility Areas usually with steep to very steep slopes and underlain by Purok VII (Antonio# Luna) weak materials. Recent landslides, escarpments and tension cracks are present. Human initiated effects could be an aggravating factor. High landslide susceptibility Purok VI (Sanghan)# 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 indications of possible landslide occurrence are present. 2 0 Purok III Purok II (Tagbongabong)# (Basilisa)# Low landslide susceptibility Gently sloping areas with no identified landslide. 0 2 Purok VI Ilocanohan Debris flow / Possible accumulation zone (Tagbongabong)# Areas that could be affected by landslide debris. Active landslide >>>D Creep Purok V (Sanghan)# Inactive landslide Tension crack Purok V 0 2 (Basilisa)# Purok III Landslide area with mitigating measure HHHGully Purok VII (Basilisa)# (Basilisa)# 2 Purok I /// 0 (Basilisa) Rock fall/Rock slide prone area Riverbank erosion # Humilog Elementary School n ( ) Old landslide deposits n 9°4'0"N 9°4'0"N Luis Azura Memorial Elementary School 20 ( ) Purok IV Recent landslide deposits (Basilisa)P# 4 0 6 0 BASILISA Areas susceptible to ground subsidence/sinkhole development Purok VI Flood (Basilisa)# Purok VI (Poblacion# II) 2 0 Very high flood susceptibility Purok I Purok VII 20 Areas likely to experience flood heights of greater than (Humilog)# (Poblacion# I) 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 HUMILOGP such as active river channels, abandoned river channels 0 6 0 2 Purok II and area along river banks; also prone to flashfloods. 40 (Humilog)# High flood susceptibility Purok II Areas likely to experience flood heights of greater than 1 up to Remedios T. Romualdez RHU & Family Center v® (Poblacion# I) 2 meters and/or flood duration of more than 3 days. Purok III POBLACION I These areas are immediately flooded during heavy rains (Humilog) P # Purok I of several hours; include landforms of topographic lows (Poblacion I) Purok I Purok IV # (Poblacion II) 20 (Humilog) # such as active river channels, abandoned river channels # Purok VI (Poblacion I) and area along river banks; also prone to flashfloods. # Purok II 0 (Poblacion II) 2 RT Romualdez Central Elementary School # Purok VII 0 4 ( ) (Poblacion II) Moderate flood susceptibility 2 # 0 n 4 Purok V 20 0 POBLACION II (Poblacion I) Purok III P # (Poblacion I) Areas likely to experience flood heights of greater than 0.5m up to 40 # Purok IV 1 meter and/or flood duration of 1 to 3 days. These 0 (Poblacion II) 20 4 # areas are subject to widespread inundation during prolonged and 0 6 extensive heavy rainfall or extreme weather condition. Fluvial terraces, 8 100 0 alluvial fans, and infilled valleys are areas moderately 9°3'0"N subjected to flooding. 9°3'0"N 125°33'0"E 125°34'0"E 125°35'0"E 125°36'0"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.