The Palmer East River flows through the municipalities of Sacré-Cœur-de-Jésus, Saint-Pierre-de-Broughton, Saint-Sylvestre (MRC de Lotbinière Regional County Municipality) and Saint-Pierre-de-Broughton, in the Les Appalaches Regional County Municipality (MRC), in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.

Its confluence is located 1.4 kilometres (0.87 mi) downstream from the municipal boundary of Saint-Pierre-de-Broughton.

Their origin remains unknown despite research done with local pioneers and also many mining prospectors of that time.

The valley of the Palmer River, immediately south of Saint-Pierre-de-Broughton, contains varieties of reeds that people colloquially refer to as palms.

[2] The toponym Rivière Palmer Est was formalized on December 5, 1968, at the Commission de toponymie du Québec.