Research The Biodiversity Research Institute monitors bald eagle populations along the Saco River. The Saco River Corridor Commission conducts a volunteer program of water quality monitoring. The Saco River Salmon Club publishes statistics on Saco River fish return. United States Geological Survey data includes daily values for gage height, discharge, and air temperature on the site near Conway, New Hampshire. The University of New England‘s Saco River Estuary Project studies the river where it converges with the Atlantic Ocean.