ᐅ Rainwater harvesting is an effective measure for flood prevention.
Created on: 6 Jun 2013 09:12
L
LudMay
Hello – due to recent events – it should now be clear to everyone, especially after such massive flooding, that a main cause of these floods is the rapid runoff of rainwater caused by our extensive sealed surfaces! The most important measures that must now be implemented widely are: Break up your sealed surfaces – green your roofs and install grass pavers and rainwater management systems! Every rainwater system acts as a small retention basin. If only some narrow-minded planners and water supply and disposal authorities would consider this... Instead, they prefer to spend billions of public funds building retention basins and levees.
When I think about how it has been raining continuously here in Saxony over the past few weeks, any rainwater tank would have been full long ago. Water was standing on the meadows and fields. Not much of it soaked into the ground.
At the moment, I live in an old mill right by the stream. Fortunately, the reservoirs had enough capacity, so although the stream was full to the brim, it stayed within its banks. Unfortunately, in 2002 the purpose of the reservoir was not understood, so it was already nearly full beforehand. 🙁
When I think about the recent floods, it had always rained for days beforehand or there was such a heavy downpour that the soil couldn’t absorb the water quickly enough, causing torrents to rush down from the fields.
In both cases, a rainwater tank doesn’t help.
At the moment, I live in an old mill right by the stream. Fortunately, the reservoirs had enough capacity, so although the stream was full to the brim, it stayed within its banks. Unfortunately, in 2002 the purpose of the reservoir was not understood, so it was already nearly full beforehand. 🙁
When I think about the recent floods, it had always rained for days beforehand or there was such a heavy downpour that the soil couldn’t absorb the water quickly enough, causing torrents to rush down from the fields.
In both cases, a rainwater tank doesn’t help.
LudMay schrieb:
Break up your sealed surfaces – green the roofs and install turf reinforcement grids and rainwater systems! Every rainwater system is a small retention basin. If only some narrow-minded planners and water supply and disposal companies would think this through.... They prefer to build retention basins and levees costing billions with public funds.Hello!
You must have done the math. Up to 400 millimeters (16 inches) of rain fell in one day. So, 121 square meters (1,302 square feet) of roof area plus 36 square meters (388 square feet) of carport times 0.4 equals 62,800 liters (16,591 gallons)! Now let’s assume you have a rainwater tank with a capacity of 60,000 liters (15,850 gallons) 😉 – what do you do on the next rainy day :p?
These narrow-minded planners who don’t think things through are truly a plague 🙂.
Best regards,
TomTom
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