yellow belly
Member
- Location
- south west lincolnshire
done the same upstreme of melton mowbreyOur local town used to be prone to bad floods after heavy rain. So many years ago they built a dam with an open flow upstream of the town. If the flow increases drastically they shut off the flow and store the water till it can be released when conditions allow. Seems to work very well.
but once the soil is saturated as stated above the dam needs to be big enough to hold all the water that falls out of the sky
hydrologists talk of planning for 1 inch in an hour but take no account of the state of the ground water in the previous week
since october our rivers here are full to the banks with 15 mm rain events in 24 hours
the wettest days we have ever had have been in excess of 100 mm in 24 hours
imho all flood planning should be able to cope with 100mm in 24 hours on saturated soil