Relationship between wadi drainage characteristics and peak-flood flows in arid northern oman

Ghazi A. Al-Rawas, Caterina Valeo

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

37 اقتباسات (Scopus)

ملخص

Relationships between watershed characteristics and mean wadi flood peaks in arid regions are investi- gated. Mean flood peak discharge was derived for 12 watersheds ranging from 64 to 1730 km 2 in Oman using 270 flood events from 10 years of record. Fourteen watershed characteristics were automatically extracted from a digital elevation model, and multiple regression was used to investigate the effect of these characteristics on wadi mean peak flow (Q MPF) and 5-, 10-, 20-, 50- and 100-year return period flood peaks. Drainage area (DA), wadi slope (WS), watershed mean elevation (BE) and agricultural/farm area (FR) were found to be the key variables affecting flood flows. As return period increased, the influence of BE on flood-peak estimation decreased. In addition, urbanization is increasing alongside increasing agricultural areas, and the inclusion of FR in the relationship improved the variance explanation by 11% over models using only traditional variables such as DA and BE.

اللغة الأصليةEnglish
الصفحات (من إلى)377-393
عدد الصفحات17
دوريةHydrological Sciences Journal
مستوى الصوت55
رقم الإصدار3
المعرِّفات الرقمية للأشياء
حالة النشرPublished - 2010

ASJC Scopus subject areas

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