Lake Cullulleraine is a freshwater lake located in Victoria, Australia, near the town of Cullulleraine, at approximately 34°15′57.7″S, 141°35′42.1″E. Originally an ephemeral wetland, the lake has been supplemented with water since the 1920s to maintain a permanent water supply, originally established to support post-war farming in the region. This managed history gives the lake a relatively stable water level compared to naturally fluctuating inland water bodies.

Paddling is a well-established activity on the lake. Canoe and kayak hire is available through Tranquil Waters Cullulleraine, an on-site camping and adventure facility that also offers guided paddling journeys and ecotours. The campground sits directly on the lake's edge, with grassed sites providing straightforward water access for launching and retrieving craft. This makes it a practical base for paddlers who do not bring their own equipment.

The lake supports populations of golden perch, Murray cod, common carp, and dewfish, which means paddlers are likely to share the water with anglers. Wildlife interactions with fish species are a notable feature of the environment. The surrounding landscape reflects the character of the Murray-Darling region of northwestern Victoria.

Tranquil Waters also caters to school groups, corporate teams, and educational programs, so the lake can see organised group activity alongside recreational visitors. The facility includes modern amenities updated in 2022, including a cafe, which provides practical support for multi-day stays. Paddlers planning a trip can contact Tranquil Waters directly at 0488 571 675 to arrange equipment hire or confirm availability.