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Document Type |
: |
Article In Conference |
|
Document Title |
: |
Regional Study ofthe Hydraulic Behaviour and Flood Probability in Some Major Wadis in the Western Part of Saudi Arabia دراسة إقليمية للسلوك المائي واحتمالية فيضان الاودية الرئيسية في الجزء الغربي من المملكة العربية السعودية |
|
Subject |
: |
earth sciences, hydrogeology and environmental sciences |
|
Document Language |
: |
Arabic |
|
Abstract |
: |
The research area lies within the Western Province of Saudi Arabia
between latitudes 21 ° 00 and 23° OON and longitudes 39° 00 and 40° 30
E. Sixteen major basins and sub-basins were selected in the present study
and they are as follows:
- An Numan, including Yarij, Rahjan and Uranah sub-basins.
• Khulais, including Murawani, Ghiran and Abu Hulayfah subbasins.
- Qudaid, including Sitarah and Marrakh sub-basins.
- Thamarh
- Rabigh. including Nada, Nuwaibah and AI Akhal sub-basins.
The above mentioned wadis constitute the most important drainage
systems in the Western Province of Saudi Arabia and they are considered
to be the most important sources for groundwater to major cities, towns and
villages. These drainage basins lie partially within the Arabian Shield while
their lower parts are on the Red Sea coastal plain.
The area has arid climate with irregular rainfall which is torrential in
nature whenever it occurs. Rainfall occurs during the winter season, while in
Autumn and Spring the area is subjected to isolated events. Hot and dry climate
prevails during the long summer months with occasional dry, dusty storms. The
average annual rainfall is about 60 mm in the lowland areas and it increases to
more than 200mm/year towards east. Such variations in the rainfall amount are
attributed to the orographic effects of the escarpments facing the Red Sea. The
,
groundwater aquifers within these catchments may receive direct recharge from
the rainfall which infiltrates through the ground, or through indirect recharge
where portion of water from the runoff infiltrates through the wadi beds or flood
plain.
In spite of the arid climate, flash floods from torrential rains often
cause severe destruction to human lives and properties, including engineering
structural features such as highways and bridges. The study was aimed to
provide valuable information that can be used for hydraulic designing
in the construction of dam highways, bridges, flood control storm channels
and
heavy industrial complex buildings. |
|
Conference Name |
: |
the second annual meeting for scientific research |
|
Duration |
: |
From : 27 محرم AH - To : 28 محرم AH
From : 30 مارس AD - To : 31 مارس AD |
|
Publishing Year |
: |
1424 AH
2003 AD |
|
Number Of Pages |
: |
7 |
|
Article Type |
: |
Article |
|
Added Date |
: |
Wednesday, January 14, 2009 |
|
Researchers
| محمود سعيد ثابت | Thabit, N/A N/A | Investigator | | |
| علي محمد الصبياني | Al Subyani, N/A N/A | Researcher | | |
|