Lake Yarrunga is a flatwater reservoir in the Shoalhaven region of New South Wales, located within Morton National Park near Kangaroo Valley, approximately two hours' drive from Sydney. The lake was formed by Tallowa Dam at the junction of the Shoalhaven and Kangaroo rivers, and its arms extend along both the Shoalhaven River and the Kangaroo River, creating a varied and expansive paddling environment. No powered boats are permitted on the water, and there are no rapids, making it well-suited to beginner paddlers and families as well as those seeking longer multi-day expeditions.

The two primary access points are the Bendeela Picnic and Camping Area and Tallowa Dam, both of which offer straightforward kayak launching. The Kangaroo River arm of the lake runs north-east from Tallowa Dam toward Kangaroo Valley, while the Shoalhaven arm extends in the opposite direction. A popular day trip on the Kangaroo River arm runs from Beehive Point to Bendeela, covering approximately 14 kilometres. Beehive Point, located around 15 kilometres from Bendeela on the northern shore, is accessible by 4WD track, though entry from the water is described as difficult. Notable side trips include a paddle into Yarrunga Creek to explore the drowned forest — a stand of dead trees now submerged since the dam's construction — which is approximately 8 kilometres return. Bundanoon Creek, entering from the north-west at around the 19-kilometre mark, is also worth exploring, as is Sandy Creek, a tributary of Bundanoon Creek that features tall dead trees and boulder-lined waterways.

Remote camping is available at several sites along the shoreline, accessible only by canoe or kayak. Kimberley Park and Acacia Flat are two larger sites with bush toilets located around 10 kilometres into the Shoalhaven arm. Smaller sites exist at Yarrunga Creek junction and near Sandy Creek, though these accommodate only a few tents. The Bendeela campground offers water and toilets.

Away from Bendeela and Tallowa Dam, the lake is genuinely remote with no mobile phone reception and very limited vehicle access. Paddlers should be aware of goannas at remote campsites, which are known to target food supplies. Kangaroos, wombats, wedge-tailed eagles, and various snakes are also regularly encountered. Fishing is permitted, with bass and perch reportedly restocked in the lake.