
Flooding, although it usually carries a negative connotation, is quite a natural process and is simply the response of a natural system---a river system---to the presence of too much water during an interval of time. When excess discharge is present in a river or stream, at first the water moves more quickly and perhaps some erosion of the channel takes place. If discharge increases too rapidly, however, water must move out of the channel and out onto the surrounding area, known as the floodplain. (Science.jrank.org)
Tago is a floodplain, and so the recent flood was par for the course!
(read the article in full here: http://kspy65.blogspot.com/)