Loch Ness is an elongated
loch located southwest of
Inverness, extending for approximately and flowing from southwest to northeast. At , it is the second-largest
Scottish loch by surface area after
Loch Lomond, but due to its great depth it is the largest by volume in the British Isles, containing more water than all the lakes in England and Wales combined. Its deepest point is , making it the second deepest loch in Scotland after
Loch Morar. A 2016 survey claimed to have discovered a crevice extending to a depth of , but further research determined this to be a
sonar anomaly. Its surface is above
sea level, having been raised around during the construction of the Caledonian Canal. The loch is one of a series of interconnected, murky bodies of water in Scotland; its water visibility is exceptionally low due to a high
peat content in the surrounding soil. The southern end is fed by the
River Oich, which runs from Loch Oich. The northern end flows out through the Bona
Narrows into
Loch Dochfour; the
Bathymetrical survey of the Scottish fresh-water lochs considered Loch Dochfour to be distinct from
Loch Ness proper, but capable of being regarded as forming part of Loch Ness.
Dochgarroch weir at the downstream end of Loch Dochfour delineates the start of the
River Ness, which flows through Inverness to the
North Sea via the
Moray Firth. Loch Ness forms part of the
Caledonian Canal, which comprises of waterways connecting the east coast of Scotland at Inverness with the west coast at
Corpach near
Fort William. Only one-third of the entire length is man-made, the rest being formed by Loch Dochfour, Loch Ness, Loch Oich, and Loch Lochy, with the man-made canals running parallel with rivers such as the River Oich. The canal was constructed in the early nineteenth century by Scottish engineer
Thomas Telford.
Cherry Island Loch Ness has one small island, Cherry Island (, meaning Murdoch's Island), at the southwestern end of the loch. It is an artificial island, known as a
crannog, and was likely constructed during the
Iron Age. The island was originally by across, but is now smaller as the water level was raised during the construction of the
Caledonian Canal in the early nineteenth century. A castle stood on Cherry Island during the 15th century; this was constructed of stone and oak wood and was likely used as a fortified refuge. Rev. Odo Blundell, writing in 1909, suggested that Eilean Muireach may have been a hunting lodge, with Eilean nan Con the home for the hunting dogs. which examines the natural history and legend of Loch Ness. Boat cruises operate from various locations on the loch shore, giving visitors the chance to look for the "
monster".
Urquhart Castle is located on the western shore, east of Drumnadrochit.
Lighthouses are located at the northern and southern ends at Lochend (Bona Lighthouse) and Fort Augustus. There is an
RNLI lifeboat station on the northern shore near Drumnadrochit, which has been operational since 2008 and was the first non-coastal RNLI station. It is staffed by a volunteer crew and equipped with an inshore lifeboat (ILB). ==Etymology==