The lower part is served by the chemin du rang Sainte-Marie which goes up the valley of the Lord's river.

The water level of the river varies with the seasons and the precipitation; the spring flood occurs in March or April.

The Armand-Jude river originates from a small lake (length: 0.1 kilometres (0.062 mi); altitude: 346 metres (1,135 ft)), located in the forest area on the west side of Chemin de Saint-Hilarion, in Les Éboulements.

The mouth of this small lake is located at: From this source, the course of the Armand-Jude river descends on 4.0 kilometres (2.5 mi), with a drop of 56 metres (184 ft), according to the following segments: The Armand-Jude river flows on the north bank of the rivière du Seigneur.

The toponym "rivière Armand-Jude" was formalized on August 17, 1978 at the Place Names Bank of the Commission de toponymie du Québec.