Indian Arm is a steep-sided glacial fjord adjacent to the city of Vancouver in southwestern British Columbia. Formed during the last Ice Age, it extends due north from Burrard Inlet, between the communities of Belcarra (to the east) and the District of North Vancouver (to the west), then on into mountainous wilderness. Burrard Inlet and the opening of Indian Arm was mapped by Captain George Vancouver and fully explored days later by Dionisio Alcalá Galiano in June 1792.
Indian Arm is a salt-water fjord that extends about 20 km (12 mi) north from Burrard Inlet. There are no crossings, and road access is limited to the communities on the southern portion of the arm. The steep mountain slopes are so impassable that most have seen no development, despite the proximity to a major city. Indian River, marked by a small dock at the north end of the arm, can be reached by boat from the Vancouver area or by a logging road from Squamish.
The slopes along Indian Arm are either heavily forested or sheer granite cliffs. The inlet is narrow and the mountains rise steeply on both sides directly from the sea.
There are several waterfalls, with the largest being Granite Falls at the north end on the east side. Spray of Pearls Falls at Wigwam Creek is in the north west corner, and Silver Falls is on the western side at Elsay Creek. There are also numerous unnamed seasonal waterfalls running over the rocky cliff walls that can best be viewed during spring run off. In winter, frozen ice-falls can be viewed.
Wildlife viewing can include seals, bald eagles, herons, and black bears. A large pink salmon run in odd-numbered years starts in July and continues to October; salmon and bear viewing opportunities concentrate at the Indian River estuary in the northwest corner of the inlet.
Indian Arm Provincial Park includes large parts of both shores of the fjord, as well as Racoon and Twin Islands. This park is 6,826 hectares in total. There are wilderness campgrounds at sea level at Bishop Creek (west side), Granite Falls, and Twin Islands. The Park is popular with boaters and kayakers, and is also visited by charter boat day tours leaving from Granville Island, Port Moody, or Coal Harbour. Divers can visit the shallow water surrounding Racoon and Twin Islands.