The inlet has been of importance as a fishery to the Malahat and SaanichFirst Nations for centuries, and many Indian reserves are situated on the shoreline. Since the arrival of Europeans, the inlet has also provided a recreational and commercial fishery. It has also been popular with SCUBA divers. For several years, a port existed on the western shore at Bamberton, servicing a cement works.
For most of the year the deep waters are anoxic, and hydrogen sulphide (H2S) is often detected near the bottom. In the late summer and early fall, oxygenated waters from the Haro Strait and the Satellite Channel spill over into the deep basin of Saanich Inlet.
Bays and inlets
Notable bays and inlets adjacent to Saanich Inlet include:
Finlayson Arm, a long narrow arm on the south of the Inlet draining Goldstream River at Goldstream Provincial Park. It is named for Roderick Finlayson (1818–1892). The scenic and steep Malahat Drive is on the west side of Finlayson Arm, while Gowlland Tod Provincial Park is on its east.
Mill Bay, a calm bay and community centre on the west side of the Inlet. The ferry to Brentwood Bay allows a way of travelling to Greater Victoria while avoiding the steep Malahat Drive.