In the United States, flooding is the top weather-related killer. On the average, flooding claims the lives of about 130 people annually. Most victims are in their cars. In Maine, flooding can occur at any time of the year. However, typically, the greatest threat of flooding occurs in the spring when heavy rains and snowmelt can combine to produce excessive runoff.
Ice jams can also produce flooding during the late winter and early spring.
There are a number of different types of flood warnings issued by the National Weather Service. Here are some definitions. Widespread heavy rain, possibly coupled with snowmelt, is often responsible for this flooding. Small River and Stream Flood Warnings - These warnings are issued by county for the smaller rivers and streams. Heavy rainfall, possibly combined with snowmelt, is often responsible for this type of flooding.