The station lies within the Merrimack River watershed.

This in turn is part of the Concord River and Merrimack River watersheds.

The town is drained by the Smith River and lies fully within the Merrimack River watershed.

The lake lies in the Merrimack River watershed.

Center Harbor lies fully within the Merrimack River watershed.

Hill lies fully within the Merrimack River watershed.

Brookline lies within the Merrimack River watershed.

It is part of the Merrimack River watershed.

The town lies fully within the Merrimack River watershed.

Via the Blackwater and Contoocook rivers, it is part of the Merrimack River watershed.