The primary and most popular access point for paddlers on Lake Rotoiti is Kerr Bay, located near the village of Saint Arnaud. From here, you can embark on a full exploration of the lake, which stretches approximately 8 kilometers in length. A complete circuit of the lake's shoreline is a significant undertaking, covering about 20 kilometers, and is suited for experienced paddlers seeking a full-day challenge. The lake is well-suited for kayaking, canoeing, and stand-up paddleboarding, with conditions that can be calm for a gentle paddle or suitable for a longer, more vigorous trip. A notable hazard is the presence of wasps, bees, and sandflies along the lakeshore, particularly in the summer months, making time on the water a welcome relief. The lake is nestled within Nelson Lakes National Park, surrounded by a compact but stunning mountain range and beech forests, creating a dramatic alpine backdrop that becomes more pronounced as you paddle south. A key feature for a mid-paddle stop is the jetty on the western bank along the Lakeside Track; from there, a fifteen-minute walk through the bush leads to Whiskey Falls, a 40-meter waterfall hidden in the forest. The lake is a substantial mountain lake with a depth of about 82 meters. Facilities include campsites and the Lakeside Track for hiking at both ends of the lake, and a water taxi operates on the lake, which can be used for creating one-way paddle routes or for accessing more remote areas. The overall character is that of a pristine, picture-perfect alpine lake, popular with both locals and tourists, and offering a sense of remote wilderness despite being just over an hour's drive from Nelson.