A substantial number of 'Waterfalls' were shown during 1964, notably at the Eric Scholes Gallery in Rotorua and at Ikon Fine Arts in Auckland. However, given the large number of works with this motif, and the lack of documentary evidence, it is difficult to identify the works which appeared in particular exhibition.
During this period, McCahon was experimenting with a number of commercial oil and water-based paints. In some cases, he mixed these with artists' oil colours. The exact nature of the medium can be difficult to determine.