23 June 202120 July 2021 Diamond Creek Nillumbik Park Diamond Creek flows through Nillumbik Park between Wattle Glen and the township of Diamond Creek. From there it flows to the River Yarra via Eltham. Several bridges carry the newly completed Diamond Creek Trail over the creek shown here in flood. Oil painting by Dai Wynn on canvas panel. 50 cm high by 40 cm wide by 0.3 cm deep approximately.