Fjord - Wikipedia : “Geologically, a fjord ... is a long, narrow inlet with steep sides or cliffs, created by glacial erosion.” If the inlet is connected to the ocean, the water in the fjord will be salt water. If the inlet is connected to a (freshwater) lake, the water in the fjord will be fresh water. read more
If the inlet is connected to the ocean, the water in the fjord will be salt water. If the inlet is connected to a (freshwater) lake, the water in the fjord will be fresh water. If there is a river or stream flowing fresh water into a saltwater fjord, there will be some transition zone with brackish water as they mix. read more
Fjords differ from standard estuaries because the ancient glacier movement dropped a pile of debris called a sill separating the estuary from the larger body of water. Typical estuaries feature open flows of water between salt and freshwater bodies. read more