River

Ulhas

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Overview

The Ulhas rises in the Sahyadri near Rajmachi and flows north-west through Raigad and Thane districts of Maharashtra.

It passes Kalyan and Thane, and enters the sea through Vasai Creek and Thane Creek. Industrial and urban waste has heavily polluted its lower course.

It is a key drinking water source for the Mumbai metropolitan region.

Geography and key facts

  • West-flowing Konkan river, Maharashtra
  • Rises near Rajmachi, Sahyadri
  • Flows past Kalyan and Thane
  • Polluted lower course

Why it matters for UPSC

Urban river pollution in the Mumbai region is a GS-3 case.

Note for UPSC

A Konkan river near Thane and Kalyan.

Prelims asks about tributaries, the states a river flows through, its basin and the projects on it, so trace the course on the map.

Asked in PYQs

No question in our Prelims bank names Ulhas yet.

Key facts

Type
River
State / UT
Maharashtra
River system
Peninsular
Basin
West-flowing (Western Ghats)
Extent on map
18.8°–19.3°N, 72.8°–73.4°E

From the Map Explorer data; positions are for orientation.

In the lessons

More rivers (same basin first)

Also in the West-flowing (Western Ghats) basin

Other places in Maharashtra

All rivers · Revision list · Most asked in PYQs