Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2755

Full Length Research Paper

Assessing temporal and spatial characteristics of droughts in the Hirfanli dam basin, Turkey

Osman Yıldız
Civil Engineering Department, Engineering Faculty, Kırıkkale University, 71451 Kırıkkale-Turkey.
Email: [email protected] or [email protected]

  •  Accepted: 10 March 2009
  •  Published: 30 April 2009



Regional drought analysis provides useful information for a sustainable water resources management. The characteristics of meteorological droughts in the Hirfanlı Dam Basin, a semi-arid region in Turkey were determined using the Standardized Precipitation Index (SPI) as a measure for drought severity. The region covers upstream drainage areas of the Kızılırmak River, one of the major water resources of the country, and is subject to frequent drought events. Using the temporal and spatial characteristics of monthly SPI, drought intensity-areal extent-frequency curves for various return periods were constructed for the region. The intensity area extent and return periods of selected historical droughts in the region were obtained and an evaluation of the drought severities was presented.


Key words: Drought, semi-arid region, SPI, frequency curve, return period, kriging, The Hirfanlı dam basin, Turkey.