MacDonalds campsite sits on the northern shore of Lake Mapourika/Māpouriki, within Westland Tai Poutini National Park, about 15 km north of Franz Josef/Waiau via SH6.

The site is reached by a short gravel driveway off the highway and is part of the wider Otto/MacDonalds campground, which is split into two sections — the lakeside Otto area and the larger MacDonalds area alongside the river.

The campground offers 20 non-powered tent sites along with flushing toilets, tap water, a boat ramp, and wheelchair access with assistance. Bookings are required year-round, and freedom camping is prohibited. Dogs are not permitted on site.

Lake Mapourika itself is the largest lake in the national park and is well suited to boating, trout fishing, and swimming.

The lake is a kettle lake formed roughly 14,000 years ago by a retreating glacier, and is noted for its reflections and views of the surrounding landscape.