Baffin Bay pack ice. Winds are predominantly north-western through the whole year. South-eastern and eastern winds are common in July and August. Between May and July (sometimes April), a significant portion of navigable open water (polynya) forms at the extreme north of the bay, presumably due to the relatively warm Greenland Current. With an area of about in summer, it is the largest polynya of the Canadian Arctic and covers the Smith Sound between the Ellesmere Island and Greenland. This polynya has a stable position and existed for at least 9,000 years. It was first described in 1616 by William Baffin and
Australian south-east coast drainage division and the associated Australian Alps. Major rivers of the division, from north to south, then east to west include the Clarence, Macleay, Hunter, Hawkesbury-Nepean, Shoalhaven, Clyde, Snowy, La Trobe, Hopkins, and Glenelg rivers. For administrative purposes, within the drainage division, the basins are generally classified into the following catchments, from north to south, then east to west: Australian south-east coast drainage division The south-east coast drainage division is the very long, narrow area of southern Australia between the Great Dividing Range and the Coral and Tasman seas, and the Bass Strait. It includes the small part of south-eastern South Australia