Hume Dam
As a consequence of flow regulation, the winter and spring floods are now reduced, and of shorter duration than previously, with more low level flooding occurring in summer and autumn. The increased incidences of smaller summer and autumn floods, which affect low-lying areas of Barmah National Park, are sometimes caused by heavy rains. More often, they occur because there is sufficient rainfall for irrigated farmland between the Hume Dam and the Barmah Forest, consequently river diverters do not choose to take allocated water, Lake Mulwala (Yarrawonga Weir) also has inadequate storage, resulting in high level river flows referred to as "rainfall rejections".