Skip to content
Free updates Login
SSCRailwayUPSC & State PSC

Hooghly River Pollution Mapping With Drones: SMCG Bengal

21 January 20261 min read
ENVIRONMENT & ECOLOGYHooghly RiverPollution MappingWith Drones:SMCG Bengal21 January 2026safalsetu.com

Why in the news

For the first time, State Mission for Clean Ganga (SMCG), West Bengal, is flying drones to trace pollution sources on a 120-km stretch of the Hooghly.

About the Hooghly (Hugli)

  • A major distributary of the Ganga system, supporting navigation, industry and cities like Kolkata.
  • Forms near Nabadwip where the Bhagirathi and Jalangi meet; the Bhagirathi is itself a Ganga distributary.
  • Flows south via Nadia, Hooghly, Howrah, Kolkata and South 24 Parganas into the Bay of Bengal through a wide estuary.

Tributaries

  • Ajay, Damodar, Rupnarayan, Haldi.

Exam angle

  • Agency: SMCG, West Bengal; stretch: 120 km.

Test yourself

1. Which two rivers join near Nabadwip to form the Hooghly?

The Hooghly forms from the Bhagirathi and Jalangi confluence.

2. How long a stretch of the Hooghly is being mapped by drones for pollution sources?

Drones are mapping a 120-km stretch.

3. Which of these is a tributary of the Hooghly?

Ajay, Damodar, Rupnarayan and Haldi are its tributaries.

This topic is part of Daily Current Affairs 20 January 2026 (16 topics).

All topics of the dayDay quizJanuary 2026

Read more