Margallaway River, New Hampshire
Has its source among the highlands which separate Maine from Lower Canada, in the N.E. extremity of New Hampshire, about 30 miles N. from Errol. After a S. course of nearly 20 miles on the western border of Maine it enters New Hampshire at the S.E. part of the 2d grant to Dartmouth college, where it forms a junction with the united streams of Dead and Diamond rivers. Thence, after a S. course of about 6 miles to Errol, it receives the waters of Umbagog lake. After this junction the main stream is the Androscoggin river.