I heard a report about the Army Corps of Engineers being forced to adopt a policy by the Clinton Administration where they would control the flow of rivers to mimic the seasonal flooding that would "benefit the ecosystem and wildlife" along the rivers and specifically not be controlled to benefit the people and businesses along the river. The adoption of this policy, during an extended period of drought, was initially not discovered to be a problem. But now that snowfall/rainfall are returning to normal and higher levels, the lack of action by the Corps to release water early in the year is resulting in record flooding and loss of property in the spring and summer.
Apparently this is not "normal" flooding.