As the monsoon retreats and the flood waters recede, the flood bank and bed of the River Dikrong in Itanagar, Arunachal Pradesh becomes a humming ground of the human activities. Temporary labour tents or huts, crusher machines, movement of trucks and other vehicles all along the length and breadth become the state of affairs in the river. These river sites during the lean season are lucrative to crowds of people to pile up stones, rocks, sands, etc. The demand for these materials is increasing day-by-day due to increased construction of new railway, roads, buildings, market places, etc.