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  1. #21
    Join Date
    Dec 2009
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    Mostly the Don South Yorks,but also Derbyshire streams
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    Default

    I have got your message,infact I have two.But you forgot to put your e-mail address on each of them. Try again

  2. #22
    Join Date
    Feb 2007
    Location
    Barnsley
    Posts
    3,260

    Default

    Andreafish et al; regarding the major tributaries of the urban Don (Loxley, Rivelin, Sheaf and Porter Brook), we do try to keep a weather eye out for potential problems and issues affecting them (apart from holding independant populations of wild trout - they are also important spawning tributaries of the main river).

    There have been two fish kill pollutions (raw sewage) on the Porter Brook last year as a result of maintenance works and we are fully engaged in the battle to change the Flood Alleviation works practices (both the works strategy and the post-works mitigation efforts - particularly at Malin Bridge and also at Bridge-End in Penistone). We (as the WTT, SPRITE, S&TA) have had significant input into the form of the current works that are going on around the Nursery Street area - but we wait with bated breath to see whether the promised changes to working practices will be followed through.

    This is Malin Bridge "Pre Works" - you can see the upstream bridge arch (viewed from the downstream bridge)


    "During" works - at this point (although fairly severe) there is at least a functional and varied cross section to the channel as well as a variety of sizes of stream- bed gravel/cobble etc. The coppiced trees will regrow giving low bushy cover.


    "After" - Totally destroyed channel cross section, no vegetation, overwide, uniform over-shallow at low flow (and a raging sheet of water at high flow - preventing fish passage when there is enough water to cover their backs!). There is no additional benefit to flood risk compared to picture 2, because the bridge arches define the hydraulic limit to the channel at this point. A point that the E.A. have since conceded and have promised to change in future works......


    The only saving grace (which exists purely by chance) is that both the Rivelin (top left of picture) and the Loxley (Top right) are relatively steep in their bed slope and have begun to "heal" the channel by depositing cobbles from upstream following the snow melt.

  3. #23

    Default

    That should win the award for the most depressing post of the year!

    At least we know its in good hands with you and Mr Crofts fighting for it, I can only imagine how mad you guys must have felt when you saw what the flood 'defence' ( flood relocation further down stream in someone elses patch) had done to your years of care and hard work.
    Isn't it time you guys where recognised by the EA as specialist in this field and consulted when policy like this is driven through?

  4. #24

    Default

    The flood works to date have indeed made several of us weep. The EA have now recognised some of the expertise that is around and have consulted widely on the next phase of works (WTT, S&TA, SPRITE but also Sheffield wildlife trusts, five weir's walk and others). it is frightening the lack of understanding on behalf of some of the flood works people, but they are giving the impression of trying to do much better. The plans for the next phase (Nursery St, Blonk St and Effingham Rd) are better in terms of limiting habitat damage and undetaking mitigation works, and they are also promising mitigation works at Malin Bridge (see the last of Paul's photos). The devil as always is in the detail so we need to watch carefully to see that all this consultation has an effect on the ground.

    willb

  5. #25
    Join Date
    Feb 2007
    Location
    Barnsley
    Posts
    3,260

    Default

    Cheers WP, that is now the situation we have negotiated (along with some other key stakeholders like the river stewardship company, the URSULA project at the catchment science centre in Sheffield and the Kayak club).

    What I don't know yet how to achieve is how to get investment in controlling the inputs of flash floodwater (i.e. sustainable urban drainage systems, porous residential driveway materials, upland land management (planting shelter belts to increase ground penetration of rainfall and attenuate runoff), surface water storage capacity in playing fields.

    It is no good trying to keep making the "plughole" of the river bigger - as there are so many bridges and pinch points that you will make things worse if you speed the transit of water into these bottlenecks.

    We need to find a way of getting investment in "turning down the taps" as they are doing in places like Pickering and Sinnington following their flood events.

    N.B. I have heard (unsubstantiated as yet) reports that the floods at Workington may not have been helped by the removal of gravel shoal material from the channel (resulting in faster water flow and more synchronised arrival of floodwater at bottlenecks from disparate parts of the catchment).

    There needs to be a campaign to change people's attitudes to flood alleviation - too much is concentrated on digging out the channel (and removal of self-seeded trees).

    The difficult point to make is that, whilst you can reduce the amount of trees in the channel throughout the catchment, the large-scale dredging and shoal removal is likely to produce sheets of floodwater that are going like the clappers in a straight line and smashing fallen trees into structures at a far greater velocity than would be the case in a more complex, sinuous channel with greater "roughness". A situation that is not helped by ignoring identification and creation of sensible opportunities for floodwater storage

    Flood the parks, not the properties!!

  6. #26
    Join Date
    Dec 2009
    Location
    Mostly the Don South Yorks,but also Derbyshire streams
    Posts
    186
    Blog Entries
    1

    Thumbs up

    Im new to this forum game.How do you get the photos from the computer to the forum. Im sure someone out ther can help!
    Last edited by royal; 16-02-2010 at 11:40 AM.

  7. #27
    Join Date
    Feb 2007
    Location
    Barnsley
    Posts
    3,260

    Default

    P.S. Neil Trudgill (E.A. fisheries) has been driving a project forward to tackle fish passage all the way up the Sheaf (by making weirs passable).

    Some details here from an early blog post of mine:
    Trout in the Town: Weirs tha bin?

  8. #28
    Join Date
    May 2006
    Location
    Mainly on my local river :)
    Posts
    2,213

    Default

    -----------------------------
    Last edited by Martin_Introna; 12-10-2010 at 08:30 PM.
    I dont yell I'm Italian but tell it 'as it is' in plain English Hidden Content

  9. #29
    Join Date
    Dec 2009
    Location
    Mostly the Don South Yorks,but also Derbyshire streams
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    186
    Blog Entries
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    Default

    [/IMG]

    [QUOTE=captain;645664]There you go fella.... follow instructions....
    Lets have a go

  10. #30
    Join Date
    Feb 2007
    Location
    Barnsley
    Posts
    3,260

    Default

    John - there must have been a typo in your code. The picture below was posted by me using the code below - BUT JUST REPLACE THE "<" and ">" with "[" and "]"

    <IMG>http://i46.tinypic.com/14cb42x.jpg</IMG>

    Don't include the inverted commas of course!



    Last edited by Paul G; 16-02-2010 at 12:29 PM.

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