Cairn Curran Reservoir sits on the Loddon River in central Victoria, formed by an earth-fill dam completed in 1956. The dam wall stands 44 metres high and 1,548 metres long, creating a reservoir that covers approximately 1,900 hectares at full capacity with a storage volume of around 148 gigalitres. The reservoir lies near the townships of Baringhup, Newstead, and Welshmans Reef, roughly 10 kilometres west of Maldon and 30 kilometres east of Maryborough, and about 150 kilometres from Melbourne.

The water surface is expansive, with deep water throughout much of the reservoir and extensive submerged timber structure — drowned trees that create complex underwater habitat. This submerged timber is a defining characteristic of the paddling environment and warrants attention when navigating, particularly in shallower areas near the margins.

The primary access point for paddlers is Picnic Point on the western shore, off Joyces Creek-Baringhup Road. The boat ramp here is a single-lane sealed facility, noted as quite steep, so care is warranted during launching. Kayaks can be staged in the car park and wheeled down alongside the ramp. A second access area, Woolshed Bay, is located on the eastern shore. Both sites have amenities blocks, including all-abilities facilities. Caravan parks and picnic areas with electric barbecues are available along the foreshore.

The reservoir is shared with power boats, jet skis, and sailing craft, so paddlers should expect motorised traffic, particularly on weekends and during warmer months. The Cairn Curran Sailing Club holds regular events between October and April. Wind conditions can change quickly, and the combination of cold water, wind chill, and submerged logs presents real hazards for kayakers — a wetsuit, appropriate footwear, and gloves are advisable, especially outside summer. Late spring and early summer are noted as productive periods for fishing activity on the water, which also corresponds with increased boat traffic.

Wildlife in and around the reservoir reflects a central Victorian freshwater environment. The water holds populations of Murray cod, golden perch (yellowbelly), silver perch, redfin, and brown trout, with significant stocking programs undertaken by the Victorian Fisheries Authority in recent years. The reservoir is managed by Goulburn-Murray Water, which oversees both dam operations and recreational use under a Land and On-Water Management Plan.