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The Treaty of 1783 defined the Northeast boundary of the United States, toward Canada, as extending from the source of the St. Croix due north to the highlands or watershed between the Atlantic and St. Lawrence systems, thence along those highlands to the northwesternmost head of the Connecticut River. Disputes over this definition lasted from that time to 1842. In 1831 the king of the Netherlands, as arbitrator, made an award which neither party was willing to accept. Finally, by the Webster-Ashburton Treaty of 1842, the present line was agreed upon, not greatly differing from that suggested by the Dutch king, and giving about seven-twelfths of the disputed territory to the United States and about five twelfths to Great Britain.