In a severe drought, they might have made a difference.
A severe drought in 1933 and 1934 put many farm families out of business.
The art world now is looking at a fairly severe drought over the next year or so.
The site was later exposed by a severe drought in 2011.
The second occurred in 2001 and 2002 at the end of a severe drought.
At the same time, the country suffered a severe drought.
In 1930 there was another severe drought, and most of the residents moved away.
Due to this there was a severe drought in 1965.
The area around the station was struck by a severe drought in 1902.
However, a severe drought in the summer of 1838 made river travel all but impossible.