East River Sheet Harbour

East River Sheet Harbour (locally known as East River) is a river on the Eastern Shore of Nova Scotia, Canada, in the Halifax Regional Municipality. Its headwaters are the Northeast Arm of Sheet Harbour, Nova Scotia.

East River Sheet Harbour begins at the Marshall Flowage, near Malay Falls. It flows southwest through the Malay Falls and Ruth Falls Flowages. Lake Mulgrave, a large lake west of the Marshall Flowage, flows into the Marshall Flowage via the Mulgrave River. The Fifteen Mile Stream also flows into the Marshall Flowage from the north. It extends northward, into Guysborough County. Grant River, a short river, flows into the Ruth Falls Flowage.

The East River Campground is located at the mouth of East River.