A water gap is a gap that flowing water has carved through a mountain range or mountain ridge and that still carries water today. Such gaps that no longer carry water currents are called wind gaps . Water gaps and wind gaps often offer a practical route for road and rail transport to cross the mountain barrier.
3-793: Swatara Gap is a water gap through Blue Mountain formed by the Swatara Creek in Lebanon County, Pennsylvania . PA Route 72 as well as Interstate 81 pass through the gap. The Appalachian Trail passes through the gap over the Waterville Bridge in Swatara State Park . The area was a fossil collecting site. "Swatara" comes from a Susquehannock word, Swahadowry or Schaha-dawa , which means "where we feed on eels". Ancient Native Americans built dozens of eel- weirs , V-shaped rock barriers designed to funnel eels to facilitate capture, on
6-467: The Susquehanna River and its tributaries. This Lebanon County, Pennsylvania state location article is a stub . You can help Misplaced Pages by expanding it . Water gap A water gap is usually an indication of a river that is older than the current topography. The likely occurrence is that a river established its course when the landform was at a low elevation, or by a rift in a portion of
9-422: The crust of the earth having a very low stream gradient and a thick layer of unconsolidated sediment . In a hypothetical example, a river would have established its channel without regard for the deeper layers of rock . A later period of uplift would cause increased erosion along the riverbed, exposing the underlying rock layers. As the uplift continued, the river, being large enough, would continue to erode
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