Valley Creek originates as a north oriented stream along the Chester Valley south wall and turns in an east-northeast direction to flow along the Chester Valley floor, but before reaching the southeast oriented Schuylkill River turns in a north direction to cross the Chester Valley north wall between Mount Joy and Mount Misery and to […]
Category archives for barbed tributary
Longwood Gardens near Kennett Square in Chester County is located on the drainage divide between Brandywine Creek to the east and Red Clay Creek to the west. A former east-to-west oriented water flow channel crosses the present-day Brandywine Creek-Red Clay Creek divide on the Longwood Gardens grounds on the north side of the main conservatory […]
This inventory identifies most of each township’s obvious barbed tributaries and elbows of capture as seen on 1:24,000-scale United States Geological Survey topographic maps, but should not be regarded as being complete. Also many of the barbed tributaries and elbows of capture are best seen and understood by observing the evidence in an area much […]
This inventory is an effort to identify each township’s most prominent through valley, or through valleys and many less prominent through valleys are not included. The through valleys provide evidence of former drainage routes that can best be explained in the context of massive and prolonged southwest oriented floods that were sequentially captured by headward […]
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, […]
Neshaminy Creek “meanders” in an east direction north of Warrington Township while Little Neshaming Creek flows in an east, southeast, and east direction through southern Warrington Township. Mill Creek is a significant northeast oriented Neshaminy Creek tributary originating in Warrington Township. The Neshaminy Creek-Little Neshaminy Creek drainage divide elevation northeast of Montgomeryville along the Montgomery-Bucks […]
Crum Creek and Darby Creek both originate in the same region near Paoli and Berwyn just south of the Chester Valley south rim and diverge slightly before flowing in southeast and south-southeast directions to join the southwest oriented Delaware River at almost the same location. Both streams are joined by northeast oriented barbed tributaries from […]
Cheney, PA is located in an east oriented East Branch Chester Creek valley segment and is located a short distance downstream from the confluence of south-southeast oriented East Branch Chester Creek with southeast oriented Goose Creek and a short distance upstream from where the East Branch Chester Creek turns to flow again in a south-southeast […]
Darby Creek flows in a southeast direction from near Berwyn and Daylesford, PA to southwest Philadelphia where it turns to flow in a southwest direction to join the southwest oriented Delaware River. Crum Creek headwaters are located just west of the Darby Creek headwaters near Paoli and Crum Creek flows in a south-southeast direction to […]
Figure 1 illustrates the drainage divide area at Chester Heights between Chester Creek and West Branch Chester Creek and also illustrates at locations 1 and 2 two well-defined gaps (or notches) linking northeast oriented tributary valleys with southwest oriented tributary valleys. Note how Chester Creek flows in a southeast direction from the north center edge […]
Ridley Creek flows in a south-southeast direction along the west edge of Media and eventually reaches the southwest oriented Delaware River while Chester Creek flows in a southeast direction approximately 3 kilometers to the west and independently reaches the Delaware River. In addition to being two closely spaced and roughly parallel southeast oriented Delaware River […]
Media (Delaware County, PA) is located on the relatively narrow drainage divide between south oriented Crum Creek and south-southeast oriented Ridley Creek. Northeast oriented and barbed tributaries drain to Crum Creek and to Ridley Creek from the west and tributaries to both creeks from the east are oriented in southwest directions. The northeast and southeast […]
North of Media (Delaware County, PA) Crum Creek and Ridley Creek flow in closely spaced southeast oriented valleys and then turn to flow in south-southeast oriented valley. Geist Reservoir is an artificial lake flooding a Crum Creek valley segment. Both Crum Creek and Ridley Creek in this region are joined by northeast and north-northeast oriented […]
Mill Creek originates just north of the Villanova University campus and flows in an east direction along the north sides of the Rosemont College and Bryn Mawr campuses until it turns to flow in an east-southeast and a south-southeast direction before making an abrupt turn to flow in a northeast direction to join the southeast […]
Morris Run is an East Branch Perkiomen Creek tributary located between Perkasie and Dublin in Bucks County and originates as a northeast oriented stream before turning in north, west, north, and northwest directions to join southwest oriented East Branch Perkiomen Creek. Most Morris Run tributaries flow in southwest directions to join north oriented Morris Run […]
Shallow wind gaps in Souderton and Telford area link headwaters of northeast and southwest oriented Perkiomen Creek tributaries and provide evidence of what were diverging and converging flood flow channels. Evidence of former channels include the present day southwest oriented East Branch Perkiomen Creek valley, a shallow wind gap in Telford linking a northeast oriented […]
The Schuylkill River between Phoenixville and Norristown makes several remarkable direction changes including two complete U-turns just upstream from Valley Forge National Historical Park. Other interesting Schuylkill River U-turns or perhaps incised meanders are found between Pottstown and Phoenixville, although this essay will focus on the U-turns between Phoenixville and Valley Forge National Historical Park. […]
The Chester Valley between Parkesburg and Coatesville is an east-northeast oriented segment of a much longer through valley and includes the drainage divide between south oriented Buck Run at Pomeroy and south oriented West Branch Brandywine Creek at Coatesville. West Branch Brandywine Creek flows from the 600-700 foot high North Valley Hills (north of the […]
The Chester Valley between Coatesville and Dowingtown is an east-northeast oriented through valley linking south oriented West Branch Brandywine Creek with south oriented East Branch Brandywine Creek. West Branch Brandywine Creek flows from the 500-600 foot high North Valley Hills (north of the Chester Valley) to enter and cross the less than 350-foot high Chester […]
West of the City of West Chester, Pennsylvania the East Branch Brandywine Creek flows in a south-southeast and southwest direction to join southeast, northeast, and southeast oriented West Branch Brandywine Creek and to form southeast oriented Brandywine Creek. Broad Run is a southeast, east, and south-southeast oriented West Branch Brandywine Creek tributary located between the […]
Figure 1: Chester Valley segment between Valley Creek and East Brandywine Creek showing East Brandy Creek and Valley Creek valleys in the South Valley Hills. United States Geological Survey map digitally presented using National Geographic TOPO software. One the Philadelphia region’s most easily recognized landforms is the Chester Valley, which extends in an east-northeast direction […]
The Pidcock Creek drainage basin is located east of Doylestown in Bucks County and is bounded on the southwest by the southeast and south oriented Mill Creek drainage basin, the northwest by Buckingham Mountain, the north by Solebury Mountain, the northeast by the southeast oriented Delaware River, and the south and southeast by Bowman Hill […]
Northeast oriented Aquetong Creek headwaters originate north and east of Lahaska, Pa area and eventually reach the south oriented Delaware River while south and south-southwest oriented Lahaska Creek flows just west and south of Lahaska to reach Mill Creek and then Neshaminy Creek, which eventually flows to a southwest oriented Delaware River segment. Through valleys […]
Watson Creek is a relatively minor stream located east of Doylestown and flows in a south and northeast direction to join southeast oriented Mill Creek, which then joins southeast and south oriented Neshaminy Creek. In its short distance Watson Creek passes through two water gaps and abruptly changes direction at an elbow of capture. The […]
The Delaware River flows in a south and southeast direction to Bulls Island and then turns to flow in an east-northeast direction for approximately one mile to Hendrick Island before turning to again flow in a southeast and south direction. Delaware River tributaries from the northeast are aligned in a southwest direction while tributaries from […]
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