The immediate result of this agitation was the formation of the celebrated Potomac Company under joint resolutions passed by Virginia and Maryland. Washington was at once elected to the presidency of this company, an office he filled until his election to the presidency of the United States five years later (1789). The plan of the Potomac Company was to improve the navigation of the Potomac to the most advantageous point on its headwaters and build a twenty-mile portage road to Dunkard's Bottom on the Cheat River. With the improvement of the Cheat and Monongahela rivers, a waterway, with a twenty-mile portage, was secured from the Ohio to tide-water on the Potomac. Washington's plan, however, did not stop here. This proposed line of communication was not to stop at the Ohio, but the northern tributaries of that river were to be explored and rendered navigable, and portage roads were to be built between them and the interlocking streams which flowed into the Great Lakes. With the improvement of these waterways, in their turn, a complete trunk line of communication was thus established from the Lakes to the sea. Washington spent no little time in endeavoring to secure the best possible information concerning the nature of the northern tributaries of the Ohio, the Beaver, the Muskingum, the Scioto, and the Miami, and of the lake streams, the Grand, the Cuyahoga, the Sandusky, and the Maumee. It was because of such conceptions as these that all the portage paths of the territory northwest of the Ohio River were declared by the famous Ordinance of 1787, "common highways forever free."