Home/Gauges/New Hampshire/Hillsborough CountyHillsborough County River Gauges7 active river gauges in Hillsborough County, New Hampshire.Contoocook River at PeterboroughPTRN3Merrimack River at Goffs FallsGOFN3Merrimack River at NashuaNSHN3Piscataquog River at GoffstownGFFN3Souhegan River at MerrimackSOHN3Souhegan River at MilfordMFDN3South Branch Piscataquog River near GoffstownSBPN3