[1] The surface of the North Arm (except the rapids zones) is generally frozen from the beginning of December to the end of March, but the safe circulation on the ice is generally made from the end of December to the beginning of March.

Neilson River flows from north to south in the Roquemont Township, in Saint-Raymond in a forest environment, then turns west.

It leaves the territory by redirecting again towards the south, to go to throw itself empting into the Bras du Nord in the row V of Roquemont Township, at the confluence of the Sainte-Anne Ouest River.

For his work in public life, he contributed greatly to the development of the region since the early nineteenth century.

In 1816, Neilson helped recruit European settlers, mostly Irish, and encouraged them to settle in neighboring lordships in a township area which later became Valcartier.