Paper
Persistence Characteristics of Floods and Droughts of the Ganges-Brahmaputra-Meghna Basins Using Flood Duration Curve and Drought Duration Curve
- Authors:
- Muhammad Masood; Kuniyoshi Takeuchi
- Abstract
- The Ganges-Brahmaputra-Meghna river basin is a unique basin in the world in terms of diversified climate. Climatic extremes specifically, floods and droughts are very common here. This study investigated the hydrological persistence characteristics of floods and droughts using Flood Duration Curve (FDC) and Drought Duration Curve (DDC). Duration curves are drawn for precipitation and stream flow at outlets. The curves indicate annual variation of annual maxima (FDC) and minima (DDC) of moving averages of precipitation and streamflow over various time lengths. It was found that those (except FDC of precipitation) of the Meghna show larger departures from the long-term average among three basins. Significantly distinct characteristics in persistence structure have been identified, which can be utilized for flood control, reservoir design and operation, and other implications on policy making for water resources management both in flood and drought.
- Keywords
- Flood; Drought; Ganges-Brahmaputra-Meghna Basin; Flood Duration Curve (FDC); Drought Duration Curve (DDC); Duration Curve
- StartPage
- 413
- EndPage
- 421
- Doi
- 10.5963/JWRHE0404015