Answer:
The rain, It rained heavily for a long period of time, (Prolonged Rain) , it rained an exceptional amount of rain in 8 hours, 2 inches in 2 hours.
as well as that, deforestation, and the fact that the soil was saturated
deforestation is when trees are cut down. when they are cut down theres nothing to suck of the water from the ground (roots) and no leaves to catch the water
interception