The rivière Cachée (English: Hidden River) is a tributary of the Mauvaise River flowing in the town of Saint-Raymond, in the Portneuf Regional County Municipality, in the administrative region of Capitale-Nationale, in Quebec, in Canada.

The Cachée river valley is served by a few forest roads for the needs of forestry and recreational tourism activities.

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

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

This confluence is located at: From the mouth of the Cachée River, the current flows successively in the following segments, over: The toponym Rivière Cachée was formalized on December 5, 1968, at the Place Names Bank of the Commission de toponymie du Québec.