Wahweap Marina, about 8 kilometres north of Page, is the main gateway for water-based access to Lake Powell. The marina offers boat and houseboat rentals, kayak hire, and guided tours including the full-day trip to Rainbow Bridge National Monument. It's operated by Aramark under concession from the National Park Service.
The lakeside setting — the characteristic red canyon walls rising directly from the water, the houseboats clustered at their moorings — is striking regardless of water level. Even if you're not renting a boat, the viewpoint from the marina gives a good sense of the lake's scale and the canyon landscape it occupies.