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Missing: geology, economy, maps, hydrological details, tributaries
There are two different figures for the length of the river in this article. The main text says 66 miles, while the Infobox says 50 miles. Which one is correct? -- Drgkl ( talk) 14:35, 1 December 2011 (UTC)
WB Name | Length km |
---|---|
Derwent from Source to R Westend | 10.2 |
Derwent from R Westend to R Ashop | 7.4 |
Derwent from R Ashop to R Wye | 29.9 |
Derwent from R Wye to R Amber | 23.6 |
Derwent from R Amber to Bottle Brook | 15.1 |
Derwent from Bottle Brook to R Trent | 31.8 |
Total | 118.0 km or 73 miles |
The article infers that Arkwright's Cromford Mill was powered by the Derwent. Whilst it may be in the Derwent Valley I understand that it used the Bonsall Brook/Cromford Sough for power. Jokulhlaup ( talk) 18:54, 26 February 2013 (UTC)
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Ladybower has two outflows, one (visible) for the river, the other (not visible) for the Rivelin Dams#Rivelin tunnel. Is there a template icon for a reservoir with two outflows? I can't find one at Category:Icons_for_canal_descriptions 2A00:23C4:D885:7F00:9131:7C99:169D:D96A ( talk) 05:59, 9 September 2018 (UTC)
ClemRutter ( talk) 21:45, 10 September 2018 (UTC)
Drgkl and Jokulhlaup had a conversation a few years ago about the correct figure for the length of this river. The figure presented now is cited back to the Peak District National Park Authority, a responsible body but we don't know where they found the figure and can put no faith in it, as with so many UK river figures. Well, I too looked at the figure of 50 miles (80 km) currently given and, as with numerous other watercourses where dubious lengths have been asserted, I assiduously measured its length on online 1:25,000 scale OS mapping using a digital tool (wheresthepath) and determined it at 110.9 kilometres (68.9 mi). I'd be confident of the accuracy of the figure to within 1% - but with caveats: I began with the furthest reach of the longest headwater stream at Swains Moss at SK 1299 9667 and headed on down, taking a smoothed centre-line through the succession of reservoirs. It's a mostly straightforward if slow process of measuring stretch by stretch but becomes more troublesome downstream of Derby where three or four alternative route choices can be made as meander loops have been cut through and both old and new lines are labelled as 'River Derwent'. Taking the longer line in each case provides the figure I give. Take each of the shorter routes and you shave 4.2km off the total, giving 106.7km - some subjectivity can creep in around this.
As I've said elsewhere, this is of course original research on my part so cannot be included in the article but it does at least give an idea of what a true figure should look like if and when an editor finds a suitable reference out there! B.t.w. in this context, the links helpfully provided by Jokulhlaup no longer work - are there new links you're aware of? cheers Geopersona ( talk) 05:29, 10 December 2021 (UTC)
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||||||||||||||||||||||
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![]() | The route diagram template for this article can be found in Template:River Derwent, Derbyshire. |
Missing: geology, economy, maps, hydrological details, tributaries
There are two different figures for the length of the river in this article. The main text says 66 miles, while the Infobox says 50 miles. Which one is correct? -- Drgkl ( talk) 14:35, 1 December 2011 (UTC)
WB Name | Length km |
---|---|
Derwent from Source to R Westend | 10.2 |
Derwent from R Westend to R Ashop | 7.4 |
Derwent from R Ashop to R Wye | 29.9 |
Derwent from R Wye to R Amber | 23.6 |
Derwent from R Amber to Bottle Brook | 15.1 |
Derwent from Bottle Brook to R Trent | 31.8 |
Total | 118.0 km or 73 miles |
The article infers that Arkwright's Cromford Mill was powered by the Derwent. Whilst it may be in the Derwent Valley I understand that it used the Bonsall Brook/Cromford Sough for power. Jokulhlaup ( talk) 18:54, 26 February 2013 (UTC)
Hello fellow Wikipedians,
I have just modified 7 external links on River Derwent, Derbyshire. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
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(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 11:33, 28 November 2017 (UTC)
Ladybower has two outflows, one (visible) for the river, the other (not visible) for the Rivelin Dams#Rivelin tunnel. Is there a template icon for a reservoir with two outflows? I can't find one at Category:Icons_for_canal_descriptions 2A00:23C4:D885:7F00:9131:7C99:169D:D96A ( talk) 05:59, 9 September 2018 (UTC)
ClemRutter ( talk) 21:45, 10 September 2018 (UTC)
Drgkl and Jokulhlaup had a conversation a few years ago about the correct figure for the length of this river. The figure presented now is cited back to the Peak District National Park Authority, a responsible body but we don't know where they found the figure and can put no faith in it, as with so many UK river figures. Well, I too looked at the figure of 50 miles (80 km) currently given and, as with numerous other watercourses where dubious lengths have been asserted, I assiduously measured its length on online 1:25,000 scale OS mapping using a digital tool (wheresthepath) and determined it at 110.9 kilometres (68.9 mi). I'd be confident of the accuracy of the figure to within 1% - but with caveats: I began with the furthest reach of the longest headwater stream at Swains Moss at SK 1299 9667 and headed on down, taking a smoothed centre-line through the succession of reservoirs. It's a mostly straightforward if slow process of measuring stretch by stretch but becomes more troublesome downstream of Derby where three or four alternative route choices can be made as meander loops have been cut through and both old and new lines are labelled as 'River Derwent'. Taking the longer line in each case provides the figure I give. Take each of the shorter routes and you shave 4.2km off the total, giving 106.7km - some subjectivity can creep in around this.
As I've said elsewhere, this is of course original research on my part so cannot be included in the article but it does at least give an idea of what a true figure should look like if and when an editor finds a suitable reference out there! B.t.w. in this context, the links helpfully provided by Jokulhlaup no longer work - are there new links you're aware of? cheers Geopersona ( talk) 05:29, 10 December 2021 (UTC)