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mediumQ. No. 14316-which-river-drains-into-vasai-creek-in-the-mumbai-metropolitan-region

Which river drains into Vasai Creek in the Mumbai Metropolitan Region?

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This question examines an important river-or-lake fact: “Which river flows through the Sanjay Gandhi National Park in Mumbai?” The correct answer is Ulhas. The Ulhas River flows through or near the Sanjay Gandhi National Park in Mumbai (Thane district). The Ulhas River originates from the Western Ghats near Ambegaon (Pune) and flows into Vasai Creek (Thane Creek). The Bhatsa and Tansa rivers are tributaries and their dams supply water to Mumbai. A river system includes its source, tributaries, distributaries, drainage basin, watershed, channel, floodplain, delta or estuary and final outlet. River behaviour depends on relief, geology, rainfall, snowmelt, sediment load, vegetation and human intervention.

AUlhas
BTansa
CDahanu
DVaitarna
Correct Answer: UlhasYour Answer: A

Explanation

Correct Answer: Option A — Ulhas The Ulhas River flows through the Mumbai Metropolitan Region and divides into creek channels near its lower course, with a major branch entering Vasai Creek. It rises in the Western Ghats of Maharashtra and drains the Kalyan, Thane and surrounding region before reaching the Arabian Sea. - Option B — Tansa: The Tansa is a tributary within the wider Ulhas basin and is associated with Tansa Lake and Mumbai’s water supply. - Option C — Dahanu: Dahanu is a coastal river and creek system farther north in Palghar district. - Option D — Vaitarna: The Vaitarna is a separate west-flowing river of northern Konkan and reaches the Arabian Sea north of Vasai Creek. Exam Takeaway: Ulhas is the principal river connected with Kalyan, Thane and Vasai Creek.

Important Notes

  • Ulhas rises in the Western Ghats near the Sahyadri region of Maharashtra and flows westward through the Kalyan and Thane urban belt.
  • Near its lower course, the Ulhas system connects with Thane Creek and Vasai Creek before reaching the Arabian Sea.
  • Ulhas River should not be confused with rivers originating inside Sanjay Gandhi National Park. Dahisar River and several small streams arise around the park’s lakes and hills.
  • Tansa is associated with Tansa Lake and Mumbai’s municipal water supply. It belongs to the broader regional drainage but is not the principal Vasai Creek answer.
  • Vaitarna is a separate west flowing river of Palghar district. Its reservoirs also supply Mumbai, which makes it a common but incorrect option in creek questions.

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