The Australian Post issued a set of flood stamps in 2011, the sale of which contributed to the Premier's Flood Relief Appeal. They show photos taken during the Queensland flood. (Scan found on the Victorian Stamp Trader's page.)
A herd of cattle is trapped on a slightly elevated roadway during the Hikuranga flood of 2007 on North Island, New Zealand.The white irregular contour on the right in the stamp appears to be the contour of Northland.
An International Decade for Natural Disaster Reduction, 1990-200, was launched by the UN. The Decade was intended to reduce, through concerted international action, especially in developing countries, loss of life, poverty damage and social and economic disruption caused by natural disasters.
In 2013 vast areas of Germany were flooded along the Elbe river and its tributaries. The charity stamp has already appeared on an earlier page. These are special cancels which make the use of the stamp even more attractive.
During the catastrophic flood of 1962 in the low-lands of northwestern Germany, which cost more than 300 lives, the army was called in to help with helicopters. This was also the case during the flood of 2013. Commemorative cover and cancellations (in the background of the newer one is the Cathedral of Magdeburg). Both floods involved the Elbe river.
Cuba issued a stamp in 1980 showing how important satellite pictures are for assessing the size and path of a hurricane, important information for being prepared. Photo of Irma taken this week from the space station.