Just feel around your elbows, and if there's a tingling sensation, you know you better run, 'dem floods are a' comin!
Yes, you can predict a flood
Floods are almost impossible to predict. When a flood happens in an area with agriculture and animal husbandry it carries away or kills genetic material that is needed for breeding the next generation of plants and animals.
Why do forecasters try to predict flood heights at different points along a river? - they do this to issue warnings fast.
By observing the stars.
they read the reports that they reported in the past.
it happens in 1999
A flash flood.
Not always, but if it is due to a storm, they do their best, and if it is because of a busted dam, they usually have predicted scenarios so they know where to evacuate... it just depends on how fast the flooding happens.
gamgam style
A flood that happens do to the overflow of a lake/river.
a flood happens when there is a drought then it rains a lot then it creates a floof that makes a flood
Using records of flood patterns to predict future flooding.