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Persian Gulf basin
This basin is one of the widest basins in Iran which area is
437,150 Km2. it includes rivers located in the East,
South-East, Balochestan and Zagros mountains.
There are 29 rivers which watershed
basin are 1000 Km2 and flow into Iraq and after joining
with Dejle river empty into Persian Gulf.
The biggest rivers are Sirvan, Karkhe, Karon, Jarahi, Zohre, Hele,
Mond, Kal, Minab and Sarbaz.
Rivers of this basin are divided to 3 groups based on
precipitation regimes and water flow:
A-
West and South West hillsides:
Dominant precipitation in this area, which is known as rainy zone,
occurs during autumn and winter.
The biggest rivers are Sirvan, Karkhe, Karon, Jarahi, Zohre, Hele,
Mond, Kal, Minab and Sarbaz.
River of this basin are classified to 3 groups based on
precipitation regimes and water flow:
A: West and south west hillsides:
Dominant precipitation in this area which is a rainy zone occurs
doing autumn and winter. Meting starts at the end of winter and
continues till the end of spring and supplies annual water of
there rivers. Raining causes flood in Khosestan plain. Important
rivers are Zabkochak, Sirvan, Karkhe, Karon.
B: Hormozgan and south of Fars
province
Water supply of these rivers is from raining and rivers are are
rather torrent. Water volume is due to precipitation in autumn
and winter.
C: Oman sea shore
Rivers of this basin are irregular and change annually (mean
precipitation in Jask varies between 0-412 mm in a long duration
sampling).
It rains several times and causes intensive temporary torrents in
the area.
Rivers change to arroyo on the rest of the year.
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