Detailed Landslide and Flood Hazard Map of 125°40'0"E 125°45'0"E

II NN DD EE XX MM AA PP :: DETAILED LANDSLIDE AND FLOOD HAZARD MAP OF 125°40'0"E 125°45'0"E

4118-IV-8 4118-IV-9 4118-IV-10 8°55'0"N SIBAGAT, AGUSAN DEL SUR; 8°55'0"N

AND BUTUAN CITY (CAPITAL), AGUSAN DEL NORTE, PHILIPPINES BUTUAN CITY (Capital) 4118-IV-14 4118-IV-13 SIBAGAT 4118-IV-15 4118-IV-14 AFGA QUADRANGLE 125°39'0"E 125°40'0"E 125°41'0"E 125°42'0"E 4118-IV-18 4118-IV-19 4118-IV-20 8°50'0"N Purok III 8°50'0"N BAYUGAN Purok VII (Santa# Maria) Purok V 0 (Tabon-tabon) 0 (Tabon-tabon)# # 6 125°40'0"E

2 4 8°54'0"N 4 6

0 0

8°54'0"N 4 0 5 2 6 2 0 0

3 4 6 0

0 0 4 2 6 0 3 0 0 8

0 1 8 0

Purok I 5 0 8 1 46 (Santa Maria) 0 n# SANTA MARIA Sta. Maria Elementary School P 3 6 2 0 (Santa Maria) 0 0

0 0 6 μ 0 8 0120.5 5

0 4 4 4 6 5 4 0 0 Kilometers

0 Purok III 2 (Tabon-tabon)# 5

1 6 0 LL E G E N D : Main road POBLACION Barangay center location 0 P! 42 2 4 18 0 So. Magaling 0 40 80 3 (Poblacion) 1 Secondary road Purok/Sitio location (Barangay) 2 # Purok IV 6 0 1 #(Tabon-tabon) 4 0 80 1 0 0 2 Track; trail n School 0 14 22 0 20 0 480 River v® Hospital 2 00 600 1 80 Municipal boundary G Church 0 0 0 8 2 5 80 Contour (meter) Proposed relocation site

0 0 5

Purok VI Purok V (Afga) 560 Landslide (Afga)# # 8°53'0"N 8°53'0"N

2 Very high landslide susceptibility 8 0 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. 440 High landslide susceptibility Purok VII Purok XI (Afga) (Afga) 1 # Areas usually with steep to very steep slopes and underlain by n# 40 Afga National High School weak materials. Areas with numerous old/inactive landslides. (Afga)

6 1 Moderate landslide susceptibility

0 3 14 6 0 Areas with moderately steep slopes. Soil creep and other indications of possible landslide occurrence are present.

Purok II (Afga)# AFGAP Purok I Low landslide susceptibility (Afga) # 300 Purok III Gently sloping areas with no identified landslide. (Afga)#n

2 Afga Elementary School 0 (Afga) 0 Debris flow / Possible accumulation zone 3 8

0 Areas that could be affected by landslide debris.

0 2

0 >>>D 2 Active landslide Creep 00 4 0 4

2 1 Inactive landslide Tension crack

0 4 3 Purok VIII 360 Landslide area with mitigating measure HHHGully (Afga) 8 # 0

1 8 0 /// 1 Rock fall/Rock slide prone area Riverbank erosion 6 0

0 Purok IX 1 (Afga) 1

8 # 0 Old landslide deposits 8°52'0"N 8°52'0"N

Purok IB Recent landslide deposits (El# Rio) 140 Areas susceptible to ground subsidence/sinkhole development

Purok IA Flood (El# Rio)

Purok II 240 (El# Rio) Very high flood susceptibility Purok IVB P (El# Rio) EL RIO Areas likely to experience flood heights of greater than

Purok IIIA 2 meters and/or flood duration of more than 3 days. (El# Rio) These areas are immediately flooded during heavy rains 1 0 8 0 0 of several hours; include landforms of topographic lows

0 0

6 8 2 2 such as active river channels, abandoned river channels

1 and area along river banks; also prone to flashfloods. 00

20 High flood susceptibility 0

2 6

6 1 0 1 6 0 Areas likely to experience flood heights of greater than 1 up to 2 8 40 0 0 1 8 2 meters and/or flood duration of more than 3 days. 2 2 4 Purok IIIB 0 These areas are immediately flooded during heavy rains 2 (El Rio) 6 0 # 0 0 of several hours; include landforms of topographic lows 3 200 140 such as active river channels, abandoned river channels and area along river banks; also prone to flashfloods.

2 0 0 0 0 180 1 2 6 Moderate flood susceptibility 0

60 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

0 8 2 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°51'0"N 8°51'0"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