There was an interesting letter in the Telegraph yesterday.
We are experiencing the worse drought since 1976. Back then it was pointed out that we didn't have any means of moving water around the country from places where there was plenty to places where there aren't.
Forty six years later, we're in the same boat.
Anyway, in 1976 rainfall in the South East was only 60% of what it has been this year.
Such droughts used to be common. From 1920 to 1950 there were five years when rainfall was less than it has been this year.
From 1873, when records started to 1970 the average rainfall in the south east for the first seven months of each year was 375mm.
Since the year 2000 it has increased by nearly 7% to 400mm.
However what has changed is the population of London and the south east, which is vastly more than it was in 1976.
So perhaps the problem isn't just lack of rainfall, but a total lack of planning?