Boat-in only. Fosthall Bay sits on the west shore of Upper Arrow Lake roughly 14-16 km north of Nakusp; there's no drive-in road to the bay itself, only lake access by boat.

What's there. A recreation site with informal camping close to the water, at the mouth of Fosthall Creek.

The draw. A short hike up from the bay reaches Fosthall Falls on the creek.

Exact facility details (number of sites, tenure, fees) aren't confirmed against the official BC Recreation Sites and Trails registry. #open

Whether the Fosthall Forest Service Road reaches the bay from inland, or only serves the upper drainage, isn't confirmed. #open

fosthall creek, the creek this bay sits on.

upper arrow lake, the lake it opens onto.

Arrow Slocan Tourism, "Spring is Waterfall Season": https://arrowslocan.com/spring-is-waterfall-season/