Sissa River

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Sissa River
Ai Sissa, Ai Sisa, Waesesa, Wae Woki River
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Location of the river
Indonesia Lesser Sunda Islands location map.svg
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Sissa River (Lesser Sunda Islands)
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Sissa River (Indonesia)
Native nameAesesa (Indonesian)
Location
CountryIndonesia
State East Nusa Tenggara
Physical characteristics
Source Inielika
  location Flores
  elevation1,400 m (4,600 ft)
Mouth Flores Sea
  coordinates
8°29′S121°18′E / 8.483°S 121.300°E / -8.483; 121.300
Length87 km (54 mi)
Basin size1,230 km2 (470 sq mi)
Discharge 
  average7.5 m3/s (260 cu ft/s)

The Sissa River (Aesesa River) is a river of Flores, East Nusa Tenggara, Indonesia. [1] [2] The 87-km river flows from a southwest to northeast direction, with the upstream at Mount Inielika north of Bajawa, Ngada Regency, and discharges into the Flores Sea near Mbay, Nagekeo Regency.

Contents

Hydrology

The watershed (Indonesian: Daerah Aliran Sungai/DAS) Aesesa has an area of 1,230 km2 with a round form, comprising two regencies: Ngada Regency and Nagekeo Regency. The upstream at Ngada Regency near Bajawa is called "Wae Woki River". The major tributaries are:

Aesesa river has a length of 87 km [3] with an average discharge of around 7.5 m3/second [4]

Uses

The inhabitants along the Aesesa River use the water for agriculture, with the help of "Sutami Dam" at Nggolo Mbay, District of Aesesa, Nagekeo Regency which distributes the water to farmlands around 6,452 hectares in Nagekeo Regency at an average discharge of 14.69 m3/second. [5] Upstream, there are several waterfalls, like "Ogi Waterfall" and "Soso Waterfall". Ogi waterfall has a height of more than 30 meters and is utilized as a major tourist attraction of Bajawa. [6]

Geography

Aesesa
Climate chart (explanation)
J
F
M
A
M
J
J
A
S
O
N
D
 
 
569
 
 
27
21
 
 
257
 
 
26
22
 
 
255
 
 
26
22
 
 
117
 
 
26
22
 
 
127
 
 
27
21
 
 
98
 
 
26
21
 
 
86
 
 
25
19
 
 
24
 
 
25
19
 
 
23
 
 
27
20
 
 
30
 
 
29
21
 
 
173
 
 
28
21
 
 
365
 
 
27
21
Average max. and min. temperatures in °C
Precipitation totals in mm
Source: [7]
Imperial conversion
JFMAMJJASOND
 
 
22
 
 
81
70
 
 
10
 
 
79
72
 
 
10
 
 
79
72
 
 
4.6
 
 
79
72
 
 
5
 
 
81
70
 
 
3.9
 
 
79
70
 
 
3.4
 
 
77
66
 
 
0.9
 
 
77
66
 
 
0.9
 
 
81
68
 
 
1.2
 
 
84
70
 
 
6.8
 
 
82
70
 
 
14
 
 
81
70
Average max. and min. temperatures in °F
Precipitation totals in inches

The river flows in the middle to the north of Flores with predominantly tropical savanna climate (designated as Aw in the Köppen-Geiger climate classification). [8] The annual average temperature in the area is 26 °C. The warmest month is November, when the average temperature is around 30 °C, and the coldest is February, at 23 °C. [7] The average annual rainfall is 1686 mm. The wettest month is January, with an average of 302 mm rainfall, and the driest is September, with 8 mm rainfall. [9]

See also

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References

  1. Rand McNally, The New International Atlas, 1993.
  2. Ai Sissa at Geonames.org (cc-by); Last updated 17 January 2012; Database dump downloaded 27 November 2015
  3. Rough measurement of major river length DAS Waesesa and Sub-DAS Wae Woki.
  4. (in Indonesian) Tingkat Kerentanan SDA DAS Easesa
  5. Potensi Pengembangan Daerah Irigasi Mbay
  6. Air Terjun Ogi Bejawa
  7. 1 2 "NASA Earth Observations Data Set Index". NASA. 30 January 2016.
  8. Peel, M C; Finlayson, B L; McMahon, T A (2007). "Updated world map of the Köppen-Geiger climate classification". Hydrology and Earth System Sciences. 11 (5): 1633–1644. doi: 10.5194/hess-11-1633-2007 .
  9. "NASA Earth Observations: Rainfall (1 month – TRMM)". NASA/Tropical Rainfall Monitoring Mission. 30 January 2016.