Detailed Landslide and Flood Hazard Map of Libjo, Basilisa and Cagdianao, Dinagat Islands, Philippines 4121-Iii-12 Doña Helen Q
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II NN DD EE XX MM AA PP :: DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 125°35'0"E 4121-III-6 4121-III-7 4121-III-8 10°10'0"N 10°10'0"N LIBJO, BASILISA AND CAGDIANAO, LIBJO (ALBOR) DINAGAT ISLANDS, PHILIPPINES 4121-III-11 4121-III-12 4121-III-13 4121-III-12 DOÑA HELEN QUADRANGLE CAGDIANAO 125°33'0"E 125°34'0"E 125°35'0"E 125°36'0"E BASILISA (RIZAL) 4121-III-16 4121-III-17 4121-III-18 10°5'0"N 10°5'0"N 125°30'0"E 125°35'0"E Purok II Lapu-Lapu 10°9'0"N (Llamera)# 10°9'0"N Purok IV Bonifacio LLAMERAP (Llamera)# Llamera Elementary School # n (Llamera) Purok I Rizal (Llamera) Llamera National High School μ (Llamera)n Purok III Magsaysay 0120.5 (Llamera)# Kilometers LL E G E N D : Main road POBLACIONP! Barangay center location Purok I Rizal (Benglen)# So. Magaling Secondary road (Poblacion)# Purok/Sitio location (Barangay) Track; trail n School River v® Hospital Purok II Mabini (Benglen)# BENGLEN Municipal boundary G Church P 80 Contour (meter) Proposed relocation site Rosita Proposed Relocation Site Landslide (Rosita) 10°8'0"N 10°8'0"N Very high landslide susceptibility Purok II Palmera (Rosita) # Areas usually with steep to very steep slopes and underlain by weak materials. Recent landslides, escarpments and tension Purok I Calachuchi cracks are present. Human initiated effects could be an (Rosita) # Purok VIII Burgos n Rosita Elementary School aggravating factor. (Rita Glenda) (Rosita) # Purok III High landslide susceptibility (Rosita)# Areas usually with steep to very steep slopes and underlain by Purok IV (Rosita) weak materials. Areas with numerous old/inactive landslides. Purok V Gen. Mc Arthur #$ (Rosita) ROSITA # Rosita Proposed Evacuation Center P Moderate landslide susceptibility (Rosita) Rosita National High School (Rosita)n Areas with moderately steep slopes. Soil creep and other Purok III Rizal indications of possible landslide occurrence are present. (Sombrado)# Purok III Low landslide susceptibility (Villa# Ecleo) Purok IV Paradise (Sombrado)# Gently sloping areas with no identified landslide. Purok I Gomez SOMBRADOP n(Sombrado)# Debris flow / Possible accumulation zone # Sombrado Elementary School (Sombrado) Purok II Dagohoy (Sombrado) Areas that could be affected by landslide debris. Active landslide >>>D Creep Inactive landslide Tension crack Purok II (Villa# Ecleo) Landslide area with mitigating measure HHHGully ///Rock fall/Rock slide prone area Riverbank erosion Old landslide deposits 10°7'0"N Purok I 10°7'0"N (Villa# Ecleo) Recent landslide deposits VILLA ECLEO P Areas susceptible to ground subsidence/sinkhole development Purok V Purok IV (Villa# Ecleo) (Villa Ecleo) # Flood Very high flood susceptibility 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 such as active river channels, abandoned river channels 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 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. 10°6'0"N 10°6'0"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.