you can not leave the scene of a accident
48 hours
You have 10 days to file a police report
90 days
In Oregon, if you are involved in an accident that results in death, disappearance, or injury, you are required to file an accident report within 72 hours of the incident. This report must be submitted to the Department of Transportation. Additionally, if the accident involves property damage exceeding $2,500, a report is also required.
24 hours I think
90 days
as long as it takes for you to write your statement
Typically you have 30 days to file.
48 hoursThe vessel operator has 48 hours to file a boating accident report when an injured person requires medical attention beyond first aid.
You must do this right away.
It varies by state, but don't delay - it's usually not a long time.