Land
Area
The Municipality of Ivisan is the smallest town in terms of land area in
the entire province of Capiz. It is classified as a fifth class municipality
with a total land area of 54.20 square kilometers or 5,420 hectares. This is
2.06 percent of the province’s total land area and 0.27 percent of the region’s
land area.
Location
Ivisan is situated along the
northwestern coast of Panay Island at 122°37’37.33” to 122°43’58” east longitude and 11°28’54.67” to
11°35’42.67” north latitude bounded by
the municipalities of Sapian on the
west, Panitan on the southeast, Sigma on the south, Roxas City on the northeast and Sapian Bay on
the north as can be seen in Figures 1, 2 and 3.
The Municipality of Ivisan is 15 kilometers southwest of Roxas City, the
provincial capital of Capiz. Modes of
transportation range from public utility jeepneys plying the Ivisan-Roxas City
route and provincial public utility buses and taxis plying the Roxas-Iloilo and
Roxas-Kalibo route.
Ivisan serves as the main gateway
from Roxas City to the provinces of Aklan and Iloilo and other provinces in the
island of Panay.
Political
Subdivision
Ivisan
is divided into fifteen (15) political subdivisions/barangays (Figure 4) which
includes Poblacion Norte and Poblacion Sur constituting its urban center. The
rural barangays include Agmalobo, Agustin Navarra, Balaring, Basiao, Cabugao,
Cudian, Ilaya-Ivisan, Malocloc Norte, Malocloc Sur, Matnog, Mianay, Ondoy and
Sta. Cruz. Urban area has a total area of 236.6216 hectares or 4.37 percent of
the municipal land area while the rural area has 5,183.3784 hectares or 95.63
percent (Table 1). Urban barangays by boundary is presented in Figure 5.
Climate
and Rainfall
Climate of the municipality belongs
to the third type where seasonal changes are unpronounced. Rainfall is evenly
distributed throughout the year. It is relatively dry during the months of November to April and wet for the rest of the
year. Average annual rainfall in 1995 is 234.88 millimeters (ml) and in 1990
is 141.82 ml showing an increase of
93.06 ml over a period of five years as shown in Table 2. Annual average
temperature is 27.5 degrees centigrade (° C) in 1995 which shows a very slight
decrease over the 1990 temperature which is 27.88° C. Hottest month in 1995 is June with a
temperature of 33.1° C and the coldest month is February with 22° C
temperature. Driest month falls on
February with only 0.45 ml rain while
month with highest rainfall is June which reached at 595 ml. Comparative
monthly temperature and rainfall are presented in Figures 6 and 7.
Soil
Types
Ivisan has four (4) varying types of
soil which includes Sapian Clay, the Louisiana Clay Loam, Bantog Clay and
Hydrosol as seen in Figure 8. Large area of land, about 4,567.4 has. or 87.27
percent of the total land area (presented in Table 3) is characterized by its
clayey texture found in the central and western part while clay loam is found in the southern
portion. The northern part is also clay with a portion that is hydrosol
especially along the coastal barangays.
Most of the low-lying areas is
favorable to rice which is regularly planted by farmers, while those with
higher slopes are planted with coconut,
banana, bamboo and other crops and those with more than 30 percent slopes
are utilized for planting of forest trees which also serves as the
watershed area of the municipality.
Topography
Ivisan has a varied topography
ranging from plain to rolling land and hills to mountains as can be seen in the
slope map in Figure 9. About 36 percent more or less of the total land area is
relatively flat with a slope of up to 3
percent with a small portion that is
swampy/coastal and about 22 percent has a slope higher than 18 percent. The
rest of the land area has a slope of 4 - 18 percent (see Table 4). The highest
elevation is 404 meters above sea level and the lowest is 10 meters above sea
level. About 76.29 percent of the total land area has an elevation of 0 - 100
meters above sea level while only 0.07 percent has an elevation of over 400
meters above sea level as presented in Table 5 and Figure 10. Slight erosion is
observed near Mianay-Malocloc Norte boundary and at Ilaya-Ivisan as presented
in Figure 11.
Topography
of each barangay is presented in Table 6. Mountains in Ivisan includes Mount
Upao, Supo and Tulalo.
Geologic Classification
The
geologic classification of the municipality is presented in Figure 12. About
3,000 has or 55.35 percent is of Sibala
formation while the rest is Quaternary Alluvium (Table 7).
Land
Distribution and Distances of Barangays to the Urban Center
Barangay
with the biggest land area is Cabugao with 565.3325 hectares taking 10 percent
of the municipal land area while the smallest is Poblacion Sur which has a
68.3169 hectares comprising 1.26 percent of municipal area as presented in
Table 1.
Excluding
Poblacion Norte and Poblacion Sur which comprises the urban center,
Agmalobo is the nearest barangay to the
poblacion with a distance of 1.50 kilometers while Basiao, where the fishing
port and beautiful beaches is located is the farthest with a distance of 9
kilometers from the poblacion as
presented also in Table 1.
Rivers and Creeks
Ivisan
is traversed by six (6) rivers and twenty one
(21) creeks as presented in Figure
. Most of these rivers and creeks are free flowing but there are some
that are constricted due to siltation as a result of the activity in the upland
portion of the municipality and some are partially closed due to fishpond
dikes near the rivers or creeks. Water from these rivers and creeks empties to
Sapian and Diagao Bay.
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