which is located further east, The Susquehanna and Tidewater Canal or the Portage Canal?
Susquehanna and Tidewater Canal The Susquehanna and Tidewater Canal between Wrightsville, Pennsylvania, and Havre de Grace, Maryland, at the head of Chesapeake Bay, provided an interstate shipping alternative to 19th-century arks, rafts, and boats plying the difficult waters of the lower Susquehanna River. Built between 1836 and 1840, it ran 43 mi along the west bank of the river and rendered obsolete an older, shorter canal along the east bank. Of its total length, 30 mi were in Pennsylvania and 13 mi in Maryland. Though rivalry between Philadelphia, Pennsylvania, and Baltimore, Maryland, delayed its construction, the finished canal brought increased shipments of coal and other raw materials to both cities from Pennsylvania's interior. Competition from railroads was a large factor in the canal's decline after 1855. Canal remnants, including a lock keeper's house, have been preserved in Maryland, and locks 12 and 15 have been preserved in Pennsylvania. A copy of a detailed survey blueprint of the entire canal system including structures and property ownership details was donated (date unknown) by the Safe Harbor Water Power Corporation to Millersville University (assessed on 10/06/2016 in the MU Archives at Sp. Coll. Map 386.409748 S128 Folio). The survey consists of 67 pages, 98 x 30 cm. and is undated but the assumption is the original was created while the canal was in use.
Frog Portage Frog Portage or Portage du Traite was one of the most important portages on the voyageur route from eastern Canada to the Mackenzie River basin. It allowed boatmen to move from the Saskatchewan River basin to the Churchill River basin. The Churchill then led west to the Mackenzie River basin. The fur trade route ran from Cumberland House, Saskatchewan north up the Sturgeon-Weir River. At its source the 300-yard Frog Portage ran, with a 20-foot drop, to Trade Lake on the Churchill a few miles west of the mouth of the Reindeer River. The route then ran at least 250 miles northwest up the Churchill to Methye Portage which led to the Mackenzie basin. For background see Canadian canoe routes (early).