Flow–duration curve integration into digital filtering algorithms for simulating climate variability based on river baseflow

Research output: Contribution to journalArticle

Abstract

A baseflow separation methodology combining the outcomes of the flow–duration curve and the digital filtering algorithms to cope with the restrictions of traditional procedures has been assessed. Using this methodology as well as the monitored and simulated hydro-climatological data, the baseflow annual variations due to climate change and human-induced activities were determined. The outcomes show that the long-term baseflow index at the upstream sub-basin is nearly half of that at the downstream from October to April, whereas they are close to each other for the remaining months. Some of the groundwater reacts to precipitation and an evident rise in the groundwater contribution was detected for the hydrological years 1998–2001 and 2006–2008. The contrary was recorded for1987. The water released from the reservoir in the dry periods led to distinctions in the detected baseflow index between the pre-damming and post-damming periods of the river.

Details

Authors
Organisations
External organisations
  • University of Babylon
  • University of Salford
  • University of Johannesburg
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Oceanography, Hydrology, Water Resources

Keywords

  • climate change, groundwater involvement, hydro-climatology, influence of human activity, surface water, water resources management
Original languageEnglish
Pages (from-to)1558-1573
Number of pages16
JournalHydrological Sciences Journal
Volume63
Issue number10
Publication statusPublished - 2018
Publication categoryResearch
Peer-reviewedYes