Draft:British watershed
Watershed of Great Britain
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The British watershed is the 1,800-mile (2,900 km) drainage divide in Great Britain that separates river systems that flow to the east and south into the North Sea and the English Channel from those that flow to the west and north into the Atlantic Ocean and the Irish Sea.
Comment: Potentially this could be a good topic, but please base the content on summarising what reliable sources have published about it, and also leave yourself out. DoubleGrazing (talk) 16:58, 31 December 2025 (UTC)
- Comment: Almost entirely unreferenced... but luckily the author at least remembered to plug their book. ;) DoubleGrazing (talk) 16:56, 31 December 2025 (UTC)
- Comment: In accordance with Wikipedia's Conflict of interest guideline, I disclose that I have a conflict of interest regarding the subject of this article. Malcolm Wylie (talk) 16:13, 31 December 2025 (UTC)
This watershed is self-defining, and is not marked on the ground in any way. Alfred Wainwright explained the concept in his Pennine Way Companion as follows:
"The main watershed of northern England is the line that divides the west-flowing streams (Irish Sea) and the east-flowing streams (North Sea). This watershed is, naturally, the crest of the Pennine Range. It is not an arbitrary or imaginary line; obviously it exists although not marked on maps and not often clearly defined on the ground. It must exist, just as the law of gravity exists – rain falling on the Pennines must run off by pre-destined courses, downhill, and whether ultimately to east or west depends on where it falls."
There are a number of possible termini for the complete British watershed, but most people who attempt the end-to-end journey (by whatever means) travel from Land's End to John o' Groats or vice versa.
Here is a summary of the route from north to south.
Scotland
| Section of watershed | Distance in miles, and start/finish | Main summits | Major rivers to the north and west | Major rivers to the south and east |
|---|---|---|---|---|
| The Flow Country | John o'Groats to Loch Merkland (145 miles) | Ben Hee | Thurso, Naver | Helmsdale |
| The Northwest Highlands | Loch Merkland to the Great Glenn (Loch Oich) (190 miles) | 40 Munros (from Conival to Sgurr nan Goirechan) | Broom, Carron, Lochy | Oykel, Bran, Beauly, Moriston, Garry |
| The Grampian Mountains | The Great Glen to Drymen (180 Miles) | 10 Munros (from Stob Poite Coire Ardair to Ben Lomond) | Spean, Orchy | Spey, Tummel, Lyon, Earn, Forth |
| The Central Lowlands | Drymen to Shotts (75 miles) | Campsie Fells | Clyde | Forth, Tweed |
| The Southern Uplands | Shotts to the Border (155 miles) | Hart Fell, Ettrick Pen, Peel Fell | Clyde, Annan | Tweed, Tyne |
England
| Section of watershed | Distance in miles, and start/finish | Main summits | Major rivers to the north and west | Major rivers to the south and east |
|---|---|---|---|---|
| The Pennines | The Border to Settle (150 miles) | Cross Fell, High Seat, Pen-y-Ghent | Eden, Lune, Ribble, Mersey | Tyne, Tees, Ure, Trent |
| The Peak District | Settle to Buxton (130 miles) | Bleaklow, Kinder Plateau | Goyt, Thame | Derwent, Dove |
| The Midlands | Buxton to Daventry (210 miles) | The Roaches | Severn, Avon, Stour | Trent, Nene, Welland |
| The Northamptonshire Uplands and Cotswolds | Daventry to Swindon (130 miles) | Cleeve Hill | Severn, Avon, Churn | Swere, Windrush, Colne, Thames |
| Wessex | Swindon to Exmoor (190 Miles) | Salisbury Plain, Exmoor | Parrett, Tone | Wylye, Culme |
| The Southwest | Exmoor to Land's End (240 miles) | Dartmoor, Bodmin Moor | Taw, Torridge, Camel, Hayle | Exe, Tamar, Fowey, Fal |
The only way to complete this journey along the watershed is on foot. Two people are known to have completed it:
- Malcolm Wylie completed a 130-day traverse of the UK from John o'Groats to Land's End in 14 sections between 1996 and 2009, covering 1800 miles; the route is documented in his book Walking the British Watershed.[1]
- the late Mike Allen walked a slightly different route, from Land's End to Cape Wrath, in numerous mainly short sections, April 1988 – October 1994. The working title for this achievement was "Mike's Silly Walk", but sadly it was never written up.[2]
Although the Scottish watershed has been walked and described by several people, the English section of the British watershed has apparently received less attention. Its northern section, the Pennine watershed, is described and illustrated by Andrew Bibby in his book The Backbone of England.[3] The UK Environment Agency has a website which identifies the catchment areas of the river systems, and can thus be used to trace the watersheds between them.[4] The Foundation for Water Research displayed a map showing the river basin districts" into which it divided the country, thus illustrating the watershed except in the south west of England which was considered as one district.[5]