Arghastan River: Geography and Hydrology of Southern Afghanistan
The Arghastan River is a vital waterway located in the arid landscapes of southern Afghanistan. Serving as a critical source of water for local agriculture, the river winds through the rugged terrain of Zabul and Kandahar, supporting life in one of the region's most challenging environments.
Course and Geography
The river originates in the Zabul province of south-eastern Afghanistan, situated near the international border with Pakistan. From its source, the Arghastan follows a west-southwest trajectory across the landscape.
As it progresses downstream, the river encounters several key junctions. Approximately 30 miles (48 km) south-west of the city of Kandahar, the Arghastan is joined on its right bank by the Dori River.
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Hydrology and Water Usage
The Arghastan River plays a fundamental role in the regional economy through the irrigation of oases around Kandahar. Because so much of its water is diverted for agricultural use in its lower course, the river's flow is significantly reduced before it reaches its end.
In terms of volume, the river's average annual flow—referred to as the module (the average discharge of a river over a specific period)—is measured at 2 cubic metres per second (71 cu ft/s) near the town of Kandahar.
Tributaries and Water Systems
The river system is fed by several tributaries, most notably the Lora River. It is important to distinguish the Lora River from the Dori River, as the Dori is sometimes referred to as the Lora in its own upper reaches.
The Lora River originates near Ab-i Istada lake and flows from the northeast, eventually merging with the Arghastan on its right bank within the river's lower reaches.
Key Facts
- Origin: Zabul province, south-eastern Afghanistan.
- Direction: Flows west-southwest.
- Average Flow: 2 cubic metres per second near Kandahar.
- Primary Use: Irrigation of oases in the Kandahar region.
- Major Tributaries: The Dori River and the Lora River.
| Feature | Detail |
|---|---|
| Source Location | Zabul Province, Afghanistan |
| Average Annual Flow (Module) | 2 m³/s (71 cu ft/s) |
| Primary Tributaries | Dori River, Lora River |
| Key Urban Proximity | Kandahar |
Frequently Asked Questions
Where does the Arghastan River begin?
The river rises in the Zabul province of south-eastern Afghanistan, close to the border with Pakistan.
How does the river affect the Kandahar region?
The river is essential for the irrigation of oases in Kandahar, though this heavy usage greatly reduces the river's flow in its lower course.
What is the difference between the Dori and Lora rivers?
While the Dori River is sometimes called the Lora in its upper reaches, the Lora River is a distinct tributary that originates near Ab-i Istada lake and joins the Arghastan from the northeast.
What is the average water flow of the Arghastan?
Near the town of Kandahar, the river has an average annual flow, or module, of 2 cubic metres per second (71 cu ft/s).