About us/ Physical Characteristics



Angadanan is one of the thirty four (34) municipalities and three (3) cities in the province of Isabela, situated in the southern part and belongs to the third district of the province. It is bounded on the north and northeast by the city of Cauayan; on the southeast by the municipality of San Guillermo; on the southwest by the municipality of Echague; and on the west by the municipality of Alicia. It is approximately 61 kilometers south of the capital town of Ilagan and about nine (9) hours trip to Metro Manila. Angadanan is a satellite center in relation to Cauayan City, Identified as the Regional Agro Industrial Center in Cagayan Valley region.


The climate of the municipality is Type III. Type III is characterized by no very pronounced maximum rain period, with a short dry season lasting only from one to three months. This type is intermediate between the preceding two, although it resembles the first type more closely because it has a short dry season. Areas of this climate type are partly shielded from the northeast monsoon but are exposed to the southwest monsoon and are also benefited by the rainfall caused by tropical cyclones. The annual average rainfall recorded in the municipality for the past ten (10) years is 1914.6 mm and the average monthly rainfall data, has heavy precipitations during the months of May, July, August, September, October, November and December.


For the last ten (10) year period from 2001-2010, the hottest month of the year is May with an average maximum temperature of 35 degrees Celsius Ten (10) years average minimum temperature (C) Year 2001-2010.


Angadanan has a total area of approximately 204.4 square kilometers which is about 1.92 percent of the total land area of the province of Isabela at 10,664.6 square kilometers. The municipality has a political subdivision of fifty nine (59) barangays. Table 1 list down the estimated land area per barangay.

Estimated Area by Barangay

1Centro I (Pob.)1.08
2Centro II (Pob.)0.40
3Centro III (Pob.)0.64
13Bunnay 3.00
14Calabayan-Minanga 4.50
15Calaccab 2.00
16Calaocan 2.50
17Campanario 3.00
18Canangan 2.00
19Consular 2.80
20Cumu 2.50
21Dalakip 3.50
22Dalenat 4.50
23Dipaluda 2.35
24Duroc 5.00
25Esperanza 2.50
26Fugaru 3.50
27Ingud Norte 3.10
28Ingud Sur 3.93
29Kalusutan 1.50
30La Suerte 23.00
31Liwliwa 1.50
32Lourdes (El Escaño) 3.50
33Lomboy 1.50
35Mabuhay 3.50
36Macalauat 4.50
37Macaniao 2.50
38Malannao 2.70
39Malasin 3.79
40Mangandingay 3.85
41Minanga Proper 6.00
42Pappat 1.20
43Pissay 1.10
44Ramona 1.50
45Rancho Bassit 1.40
46Rang-ayan 6.00
47Salay 1.50
48San Ambrocio 3.00
49San Guillermo 1.80
50San Isidro 3.00
51San Marcelo 1.99
52San Roque 2.40
53San Vicente 3.92
54Santo Niño 6.50
55Saranay 1.40
56Sinabbaran 1.60
57Victory 2.20
58Viga 27.00
59Villa Domingo 5.30
TOTAL 204.40


Angadanan has mix topographic reliefs. The eastern portion of the municipality is uphill and rolling terrain. The western and central portions are flatlands or plains. Portions of the south and southeast areas have gently sloping reliefs. 


Of the total land area of the municipality, 5,400 hectares area classified under the 0-8 percent Slope Category where intensive agriculture and urban development are recommended uses while 15,040 hectares are classified under the 8-18 and 18-30 percent Slope Category in which limited agriculture, urban development, forest and pasture are recommended uses.


As per soil survey conducted by the bureau of Soils in 1983, there are five (5) soil series with various soil types and its characteristics as follows: Bago (Ba) Series, Cauayan (Cyn) Series, San Manuel (Sm) Series, Quingna (Qg) Series and Ilagan Series


Based on the soil survey conducted in the province of Isabela, alluvium comprises most of the area along the Cagayan River. Underneath this alluvium are Batan and Vigo formations of the middle Miocene epoch. The rolling lands and highly places along the Cagayan River are of marine and terrestrial sediments associated with reef limestone and pyroclastic materials. There are also marl and reworked tuff in some places. Sporadic terrace gravel deposits are found in coastal and fluvial tracts. In some elevated flat land surfaces are plateau red earths.


The Cagayan River and its tributaries form the natural drainage of the municipality and traverses the entire municipality from north to south subdividing Angadanan into segments. The tributaries which serve as outlets of the forest region to the Cagayan River are Doña Maria, Nagcarsan, Sinalugan,Jalsam, Macalauat and Paddad creeks.

These bodies of water provide freshwater fishes and utilized for irrigation and other agricultural purposes.


The ground water from wells and springs is the main source of domestic water supply in the municipality. The present water requirement is supplied by deep and shallow wells while the rest of the residents derived their potable water needs from springs. Level I system is the most common facility in Angadanan. There are also Level II system located in Barangays Viga and Baui. The Level III system which covers the urban area of the municipality is being operated by the Angadanan Waterworks District and has a production capacity of 477 cu.m. or 477,000 liters per day.


Based on the available soil survey of the province of Isabela in 1962, there are four (4) land capability classes in Angadanan as follows: Class A, B, C & D