Frozen Ocean Lake sits within Kejimkujik National Park in southwestern Nova Scotia, part of a well-established backcountry canoe circuit that has been travelled for thousands of years, originally by the Mi'kmaq people whose portage trails are still in use today. The lake is most commonly reached as part of the Big Dam to Frozen Ocean loop, a multi-day route that passes through Big Dam Lake and Still Brook before arriving at the lake via Portage S (160 metres), which is necessary to avoid shallow rapids at the end of Still Brook. This portage is short but rocky and rooted underfoot, requiring care. Entry from the north is river right.

The lake's shoreline requires attentive navigation due to numerous rocks, many of which are difficult to spot because of the tea-coloured water. This brown hue is characteristic of Kejimkujik's lakes and results from tannic acids released by decaying peat. Paddlers should hug the shoreline carefully and watch for submerged obstacles throughout.

Several backcountry campsites are located on Frozen Ocean Lake, numbered 5 through 8, as well as sites 45 and 46. Campsite 7 can accommodate larger groups of seven to ten people, while campsite 8 features a roofed shelter suitable for poor weather. Campsite 44 is technically accessible from the lake but requires travelling up a small creek that is not navigable by canoe. Guided trip operators typically aim for a Frozen Ocean Lake site on the first night of the loop.

Exiting the lake to the south is via Portage T (130 metres) in the southeast corner, which leads to a short stillwater section above Portage U (330 metres). A significant portion of Portage U is a boardwalk, and paddlers should be aware that both sides of this boardwalk are flanked by dense poison ivy. Beyond these portages, the route reconnects with Little River and the Channel Lake Stillwater, eventually reaching Channel Lake after approximately 3 kilometres.

A valid Parks Canada entry pass is required to paddle within Kejimkujik National Park, and backcountry camping reservations must be booked in advance. Spring paddling is possible but evening frosts can persist well into June, and ticks are present in the park during this season.