"अपवाह द्रोणी": अवतरणों में अंतर

शीघ्र हटाने का नामांकन (शीह ल1)। (ट्विंकल)
जलसम्भर को अनुप्रेषित
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पंक्ति 1:
#पुनर्प्रेषित [[जलसम्भर]]
{{शीह-अन्य भाषा}}
The origin of a river is usually in the mountains. The part of a river lying in the mountains and hills is its upper course. While on this course, the river's important action is erosion. Due to the great velocity of the water, the fragments of the rocks break and flow with the water creating different types of valleys.