Rising waters on Prior Lake last week led to an organized community effort to surround homes with sandbags to prevent flooding. While that has helped, residents such as Tim Mannion and his son, Cooper Youngs, at right, also have been trying to salvage other items — in this case, their dock. The flooding has prompted a federal disaster assessment by FEMA on Tuesday, according to Sen. Amy Klobuchar. See story on A5. For more images of area flooding, go to startribune.com.