Ludhiana is the most populous and the largest city in the Indian state of Punjab. The city has an estimated population of 1,618,879 as of the 2011 census and distributed over 310 km2 (120 sq mi), making Ludhiana the most densely populated urban centre in the state. It is a major industrial center of Northern India, referred to as "India's Manchester" by the BBC. It is also known as the commercial capital of Punjab.

The Sutlej River is the longest of the five rivers that flow through the historic crossroads region of Punjab in northern India and Pakistan. The Sutlej River is also known as Satadru. It is the easternmost tributary of the Indus River. The Bhakra Dam is built around the river Sutlej to provide irrigation and other facilities to the states of Punjab, Rajasthan and Haryana.