Najibullah Sadid

Executive Summary: The Qoshtepa Canal, currently under construction in Afghanistan on the Amu Darya River, will dramatically affect the availability of water for irrigation and drinking in one of the world’s most water-scarce regions—Central Asia. In addition to their already existing water challenges, the Amu Darya River basin and Central Asia ar...

In the Helmand/Sistan basin in southwest Afghanistan, aeolian sediment movement impacts the environment, irrigation canals, agriculture, and fluvial systems. The migration of large sand dunes into the Helmand and Arghandab rivers has a significant impact on the water resources providing livelihood for over three million people. A first step toward...

Groundwater—the main water supply source for Kabul residents—has been extensively exploited in the past 2 decades, causing large drawdowns. While the imbalance between groundwater recharge and use is considered a key driver of the decline, the rapid increase in urbanisation has further limited the marginal share of regeneration from the land surfac...

Intermittent rivers are defined as rivers with a high seasonality in water, sediment transport and habitat. In this study, an attempt is made to outline the major hydro-sedimentological characteristics of intermittent rivers systems using the examples from the Maidan and Shakar-Dara rivers in Kabul region of the Kabul river basin. As dominant hydro...

Intermittent rivers are defined as rivers with a high seasonality in water, sediment transport and habitat. In this study, an attempt is made to outline the major hydro-sedimentological characteristics of intermittent rivers systems using the examples from the Maidan and Shakar-Dara rivers in Kabul region of the Kabul river basin. As dominant hydro...

The aim of this study is to investigate discharge rates at which a flow hydrograph becomes relevant for bed load transport on the example of the Alpine river Saalach. Two characteristic flow hydrographs of the river Saalach are selected and reduced to discharges above pre-specified values. With each set of reduced hydrographs, a 2D morphological si...