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Geography
Location and Natural Condition
As one out of seven regencies /
cities in the West Nusa Tenggara province, the
sumbawa regency is located on the West part of the
Sumbawa island, on the position of 116" 42' until
118"22' East Longitude and 8'8' until 9'7' South
latitude having the areal width of 8.493 km2.
From the topographic point of view,
the surface of the soil in the area of Sumbawa
regency is not flat or tend to be hilly with the
height ranging from 0 to 1730 meters above sea
level, where most of them, that is as wide as
355.108 ha or 41.81 percent have the height of 100
until 500 meters Meanwhile for the district cities
in the Sumbawa regency the range is between 19 until
650 meters above sea level. Semongkat that is the
capital city of the Batu Lanteh district is the
highest district capital.
The regency that is more well-known
with the Sabalong Samalewa motto borders with the
Alas Strait on the West, the Dompu regency on the
East, Flores Sea on the North and the Indonesian
ocean on the South.
The average distance from the capital
of the regency to the district cities is 59 kms. The
furthest district city is the Sekongkang district
with the distance of 154 kms
Climate and Rainfall
The area of the Sumbawa regency has a
tropical climate which is influenced by the rainy
season and the dry season. In the year 2002 the
maximum temperature reached 38,6o C which happened
in November and the minimum temperature is 17.0oC
which happened in August. The maximum humidity reach
89%, with a minimum of 64%, while the maximum air
pressure is 1.011,9 mb, with a minimum of 1008,5 mb.
The most wind moves south East with the highest
velocity of 20 knots / seconds which happened on
February.
The existence of natural phenomenon
such as Elnino that hit some of the Indonesian
region including the Sumbawa Regency, influences the
number of rainy days and rainfalls that happened
along the year 2002. The rainy days are less
compared to the previous year that is 109 days, most
of them happened on December which were 29 days.
The same thing happened with the
rainfalls. The most rainfalls happened on February
which was as much as 478.3 mm, and then on December
and January with the rainfalls of 373.6 and 203.5 mm
respectively.
One factor that is influential to the
rainy days and rainfalls is the amount of
evaporation. The amount of evaporation can influence
the amount of rainy days and rainfalls that happens
on the next period. Along the year 2002 the
evaporation range between 182.5 mm until 282.2 mm.
Compared to the year before there is a high increase
on the average rate of evaporation from 191.2 mm
into 297.8 mm.
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