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flood

A flood is an overflow of water that submerges land that is usually dry. In the sense of "flowing water", the word may also be applied to the inflow of the tide. Floods are an area of study of the discipline hydrology and are of significant concern in agriculture, civil engineering and public health. Human changes to the environment often increase the intensity and frequency of flooding, for example land use changes such as deforestation and removal of wetlands, changes in waterway course or flood controls such as with levees, and larger environmental issues such as climate change and sea level rise. In particular climate change's increased rainfall and extreme weather events increases the severity of other causes for flooding, resulting in more intense floods and increased flood risk.Flooding may occur as an overflow of water from water bodies, such as a river, lake, or ocean, in which the water overtops or breaks levees, resulting in some of that water escaping its usual boundaries, or it may occur due to an accumulation of rainwater on saturated ground in an areal flood. While the size of a lake or other body of water will vary with seasonal changes in precipitation and snow melt, these changes in size are unlikely to be considered significant unless they flood property or drown domestic animals.
Floods can also occur in rivers when the flow rate exceeds the capacity of the river channel, particularly at bends or meanders in the waterway. Floods often cause damage to homes and businesses if they are in the natural flood plains of rivers. While riverine flood damage can be eliminated by moving away from rivers and other bodies of water, people have traditionally lived and worked by rivers because the land is usually flat and fertile and because rivers provide easy travel and access to commerce and industry. Flooding can lead to secondary consequences in addition to damage to property, such as long-term displacement of residents and creating increased spread of waterborne diseases and vector-bourne disesases transmitted by mosquitos.

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Recent contents Top users
  1. M

    Cold Water Tank In Loft - Cause Of Flood Dispute?

    Having just moved into a property and discovering the central heating not functioning, after 3 months we eventually was able to get the property management to have one of their heating engineers attend. He was literally here 10mins and in the loft space for 2mins, where he stated he discovered...
    • Mijacmad
    • Thread
    • america cause cold cold water cold water tank flood loft tank usa water water tank
    • Replies: 14
    • Forum: USA
  2. S

    anti flood inlet hose

    busted a hose on a new dishwasher. The pipe inside bent so much back it cracked a little. Had to cut into it seeing as it already had a small break. Seeing as the flexi is running into the back of the dishwasher, is it ok to remove the back, disconnect and just shorten the pipe and cable where...
  3. 1

    AAV below sink flood level.

    OK, I understand the "reasons" for a AAV/Durgo required to be fitted above the highest flood level on a stack. In the case of - say - an upstairs WC flushing that all makes sense, no point in fitting AAV below if there's a fat heavy plug of water falling down the pipe. ..But in the case where...
  4. D

    Mystery Occasional Flood from Hot Water Tank

    Hi all, I'm intrigued by an odd leak and wondered if anyone can shed light on this... Twice, we have gone away from home for some weeks and so shut off the water supply at the stopcock and shut off the immersion heaters to our hot water tank in our apartment. Around three days after we leave...
  5. AlexGas

    Major Flood In Apartment...DOH!

    https://www.youtube.com/watch?v=OP30okjpCko
  6. B

    Flood victims need help

    We are the Rendezvous cafe in hebden bridge . We desperately need a registered plumber to fit our boiler.. weve been sat waiting to get a food kitchen running for two days ... this is an Urgent Appeal
  7. L

    I feel for all the flood victims up there.............

    Looks like their misery is never ending, RNLI flood rescue teams have been put on alert to turn out Xmas and boxing day, so muggins may be duty mechanic as our full time lad may be missing his turkey!!!!!!!!!!!
  8. 8

    Toilet flood

    My 87 year old gran had a terrible experience yesterday when she woke up to ankle deep water in her first floor sheltered flat. Seemingly the toilet flooded and kept flooding at some point. She may have been putting a lot of toilet paper down over time and may have had problems flushing and...
  9. R

    Complete novice: Baxi Bermuda/Grundfos/No heating after draining down system.

    Hi all, I've just replaced my grundfos pump with a new grundfos ups2 pump which is situated next to an old smc comet 2 controller. Before fitting the pump I had to drain the system down as the shut off valves either side of the pump weren't working correctly. I have now refilled the system...
    • Roger44
    • Thread
    • after baxi complete draining flood grundfos heating novice switch system water
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  10. R

    Flood

    I am a self employed Bench Joiner with limited plumbing skills. I helped a collegue plumb in a bathroom, the collegue knows I am not a qualified plumber. One of the connectors failed (plactic pipe) flooding the property and resulted in a claim being made against the collegue (£10,000). I was...
  11. J

    I got a flood in my kitchen what am a gonna do?

    w w w dot youtube dot com/watch?v=cfncwKhrB9c As you can see from the video, the leak is coming from the bit where the pipe enters the wall. Problem is, any piping beyond that block wall you can see in the video is not accessible, as beyond the block work is the outer brickwork. If I can get...
  12. AMGasServices

    Vaillant ecotec plus 937 flood

    Hi guys, I went out to a ecotec 937 showing error code f75. I thought ill check it the pump is ok. As I open the silver nut I was flooded with water is this normal? Usually pumps only has a few drops of water dripping not a whole flood. Secondly, can I just change the pump head or do it...
  13. E

    Narrow Escape - No major flood

    I finished my bathroom - Now Shower room upgrade and toilet replacement over 6 months ago. My next job was to replace the two header tanks and F&E tank in the loft. All galvanised tanks and 45 years old. As I am suffering with arthritis I thought 'to hell with it - get a man in. Arranged for...
  14. R

    catastrophic flood

    well, just had a call out at 6pm this evening. owner had been away for 3-4 days came home to a total, and i mean total flood. when i arrived the guy who was sitting in the car got out and re-opened the front door for me to be greeted with a rush of water over the threshold......no rush then i...
  15. A

    Help maceratorthreatens to flood my toilet on boxing day

    Hi Guys i don't know much about plumbing but I am rather desperate for some advice and i came accross your great forum. It's boxing day and my 6 year old macerator behind the toilte doesn't stop activating. In fact it is non stop now. Instead of reducing the flow in the toilet, the level has...
  16. D

    flood level of new bathroom?

    Hi Intend to install an AAV for soil vent pipe in new bathroom. This must be above flood level, so above sink overflow. What's the point in that if the shower outlet is at floor level? Surely if the system gets blocked somewhere, then the waste water from the sink or toilet will come out the...
    • djboyd
    • Thread
    • aav air basin bathroom buy fitting flood install level new bathroom overflow pipe seal shower shower tray sink soil system toilet trap traps valve vent waste water
    • Replies: 4
    • Forum: Plumbing Jobs | The Job-board
  17. G

    Illegal heating engineer

    Hello gentleman. I've had a new boiler and cylinder installed. I became suspicious after a few things were done wrong - nothing serious, but silly things like wires being attached to hot pipes instead of being properly tied to the wall and also the controller was wired wrong which meant that...
    • Gromit
    • Thread
    • bar boiler boilers central heating system controller corgi cylinder engineer flood gas gas safe heating engineer hot illegal pipes plumbers plumbing polish problem pump roller safe system trade train unvented wall work
    • Replies: 28
    • Forum: Plumbing Jobs | The Job-board
  18. J

    trv removal

    if i remove a trv (its not connected to a rad and i live in a bungalow dont know if that makes a diference) how much water will i have to contend with - need to know because it is so awkward to get at and i want to remove it and put a compressino elbow to the pipe so it could take a while thanks
  19. D

    Where do you stick an AAV?

    Hi I am fitting a vanity unit in a new build bathroom. Since the air admittance valve must be above the flood level, does that mean it cannot go within the vanity unit since the sink is mounted on the shelf? Or is it normal to stagger the level of the shelf so it is higher at the cistern...
    • djboyd
    • Thread
    • aav air basin bathroom cistern durgo fitting flood gas guide overflow plug problem sink soil stick system tips toilet trap valve valves wall waste where work
    • Replies: 22
    • Forum: Plumbing Jobs | The Job-board
  20. C

    sievert powerjet- propane canister help

    i recently aqquired a sivert powerjet nozzle for soldering but cant get the prpoane canister a bought to fit does it need an adapter or do some not fit?
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