Multiple wind gaps (or water-eroded notches) carved in the West Branch Chester Creek-Brandywine Creek divide east and south of Chadds Ford, PA and north of the Delaware border provide evidence that multiple channels of flood flow moved in a southwest direction to the south oriented Brandywine Creek valley prior to headward erosion of the east, […]
Category archives for wind gap
Overview: Along its 21-mile distance SEPTA’s Warminster Regional Rail line ascends from sea level to approximately 320 feet and crosses the Delaware-Schuylkill River drainage divide twice as it travels from the Tookany Creek drainage basin to the Wissahickon Creek drainage basin and then to the Pennypack Creek drainage basin. Along the way observant riders can […]
The town of Radnor is located Schuylkill River-Delaware River drainage divide between Gulph Creek, which flows to the Schuylkill River, and Ithan Creek, which flows to Darby Creek, which then flows to the Delaware River. The drainage divide elevation at the Radnor saddle location is between 410 and 420 feet while the drainage divide rises […]
The towns of Villanova, Rosemont, and Bryn Mawr are located Schuylkill River-Delaware River drainage divide with Rosemont being located on the divide between Mill Creek, which flows to the Schuylkill River, and Meadowbrook Run, which flows to Darby Creek, which then flows to the Delaware River. The drainage divide elevation at the Rosemont saddle location […]
While speculation about Pennsylvania drainage route origins and more specifically water and wind gap origins can be traced back to the early 1700s the questions still persist and the speculation continues[1] This inability of researchers to explain Pennsylvania drainage features, such as the large-scale Susquehanna River and Delaware River water gaps, is puzzling as similar […]
The Valley Forge National Historical Park is located south of a northeast oriented Schuylkill River segment and at the east-northeast end of the ridge forming the Chester Valley west-northwest margin. Mount Joy in the Valley Forge Park is where the high ridge ends and west of the Mount Joy the ridge segments are named Mount […]
Christiana is a small community located about 50 miles west of Philadelphia and just north of a water gap where East Branch Octoraro Creek headwaters cross the North Valley Hills. South of that water gap the East Branch Octoraro Creek flows across the east-northeast oriented Chester Valley and then flows through another water gap as […]
The Andorra Wind Gap links an east-northeast oriented tributary to the Wissahickon Gorge north entrance with a west-southwest oriented Schuylkill River tributary and has an elevation of 266 feet. To the south Schuylkill River-Wissahickon Creek drainage divide elevations rise to 420 feet before decreasing until Wissahickon Creek joins the Schuylkill River. To the north a […]
The Laverock Wind Gap with a floor elevation slightly greater than 350 feet is located just south of the northeast trending Edge Hill Ridge and links the east oriented Tacony Creek headwaters valley with a west oriented Wissahickon Creek tributary valley (which drains to the Wissahickon Gorge north entrance). Wissahickon Creek drains to the southeast […]
Route 309 and an abandoned rail line cross Edge Hill Ridge at the Seminary Wind Gap, with Westminster Theological Seminary being located on the wind gap northeast rim. The Seminary Wind Gap is one of three wind gaps cut into the Wissahickon Creek-Tacony Creek drainage divide along the northeast oriented Edge Hill Ridge with the […]
The SEPTA Lansdale line between Glenside and North Hills and Limekiln Pike cross Edge Hill Ridge at the Edge Hill Wind Gap. The Edge Hill Wind Gap is one of three wind gaps cut into the Wissahickon Creek-Tacony Creek drainage divide along the northeast oriented Edge Hill Ridge with the other two wind gaps being […]
The SEPTA Ardsley station is located on the Ardsley Wind Gap floor and Jenkintown Road also crosses the Edge Hill Ridge at the Ardsley Wind Gap. The Ardsley Wind Gap is the deepest of three noticeable wind gaps or notches cut into the Wissahickon Creek-Tacony Creek drainage divide along the northeast oriented Edge Hill Ridge […]
Phillylandforms.info 