13' - Significant flooding affects homes in the area of Beacon Drive in Merrimack. Other low lying sections upstream into Amherst and Milford experience flooding.
11' - In Merrimack, homes in the Beacon Drive area flood. Other low lying areas upstream into Amherst and Milford flood.
10' - In Merrimack, several homes along a small portion of Beacon Drive begin to flood. In Amherst, low lying areas begin to flood.
9' - Flooding of low lying areas along the river begins in the town of Merrimack.