Editing Geography of the United Kingdom (section)

===Rivers and lakes===
;Main articles:
*[[List of lakes and lochs in the United Kingdom]];
*[[List of rivers of the United Kingdom]];
*[[List of waterfalls of the United Kingdom]].

The longest river in the UK is the [[River Severn]] ({{convert|220|mi|km|abbr=on|disp=semicolon}}) which flows through both Wales and England.

The longest rivers in the UK contained fully within each of its constituent nations are:
*England: [[River Thames]] ({{convert|215|mi|km|abbr=on|disp=semicolon}})
*Scotland: [[River Tay]] ({{convert|117|mi|km|abbr=on|disp=semicolon}})
*Northern Ireland: [[River Bann]] ({{convert|76|mi|km|abbr=on|disp=semicolon}})
*Wales: [[River Usk]] ({{convert|78|mi|km|abbr=on|disp=semicolon}})

The largest lakes (by surface area) in the UK by country are:
*Northern Ireland: [[Lough Neagh]] ({{convert|147.39|mi2|km2|abbr=on|disp=semicolon}})
*Scotland: [[Loch Lomond]] ({{convert|27.46|mi2|km2|abbr=on|disp=semicolon}})
*England: [[Windermere]] ({{convert|5.69|mi2|km2|abbr=on|disp=semicolon}})
*Wales: [[Bala Lake]] (Llyn Tegid) ({{convert|1.87|mi2|km2|abbr=on|disp=semicolon}})

The deepest lake in the UK is [[Loch Morar]] with a maximum depth of {{convert|309|m}}; [[Loch Ness]] is second at {{convert|228|m}} deep. The deepest lake in England is [[Wastwater]] which achieves a depth of {{convert|79|m}}.

[[Loch Ness]] is the UK's largest lake in terms of volume.