The Control of Nature
What primary factors make debris flows possible?
help
![](https://d22o6al7s0pvzr.cloudfront.net/images/bookrags/qa/avatars/.defaults/unknown.png)
Asked by
Cat
Last updated by
Cat
help
Two main factors that trigger debris flows are broken-up rock and heavy rainfall. Factors have to occur in a particular order for a flow to happen. Often an especially heavy rainfall that starts a flow is preceded by days of rain.