Key	EFUMW
Name	Lac Castelnau
Language of origin	Undetermined
Category	O
Status	Official
Feature Type	LAKE-Lake
Feature Generic	Lake
Location	Baie-Comeau; Manicouagan
Province/Territory	Quebec
Latitude	49.260372
Longitude	-68.209255
Coordinate Accuracy	100 meters
Map	022F08
Relevance at Scale	1000000
Toponymic Feature	5ce288e0bbee11d892e2080020a0f4c9
Decision Date	1968-12-05
Provider	Quebec-Commission de Toponymie