Great Whernside is a mountain in the Yorkshire Dales, England, not to be confused with the better known Whernside, some 27 kilometres (17 miles) to the west. Its summit is the highest point of the eastern flank of Wharfedale above Kettlewell. The curving escarpment above the pass between Wharfedale and Coverdale is known as Whernside, of which Great Whernside is the highest point; Little Whernside is a few kilometres to the north-east. Great Whernside forms the watershed between Wharfedale and Nidderdale, and is on the boundary between the Yorkshire Dales National Park and Nidderdale Area of Outstanding Natural Beauty. Little Whernside forms the watershed between Coverdale and Nidderdale. The River Nidd rises on the eastern slopes of Great Whernside, above Angram Reservoir.