Spring Mill Creek (also known as Spring Mill Run) is a relatively minor Schuylkill River tributary and flows in a southwest, south, west, and south direction to the Schuylkill River at Spring Mill (just east of Conshohocken). The Spring Mill Creek drainage basin is bounded on the north and west by the southwest and south […]
The Delaware River flows in a southwest direction along the Pennsylvania-New Jersey border until it turns to flow in a south direction under the Benjamin Franklin Bridge, which links the Philadelphia City Center with the Camden City Center. The abrupt change in the Delaware River direction of flow just north of the Benjamin Franklin Bridge […]
The Schuylkill River flows in a southeast direction into Philadelphia and just after flowing under the Roosevelt Avenue Bridge makes an abrupt turn to flow in a southwest direction. After flowing in a southwest direction the Schuylkill River flows under the Columbia Bridge and just west of the East Park Reservoir makes another abrupt turn […]
Without question the deepest, longest, and most magnificent Wissahickon Creek water gap is the seven-mile long Wiisahickon Gorge eroded across a 420-foot high ridge of tightly folded metamorphic and igneous rocks and which is located entirely within the Philadelphia city limits. The erosion resistant ridge extends in an east-northeast direction across southeast Pennsylvania and is […]
Wissahickon Creek flows through the Ambler region in a southeast direction before making a turn to flow in a southwest and then south direction through its Fort Washington Water Gap located between Militia Hill and Fort Hill. In the Amber region southeast oriented Wisahickon Creek is joined by southwest oriented tributaries from the east and […]
Wissahickon Creek flows in a southwest and south-southwest direction as it travels from its headwaters to just west of North Wales and then turns to flow in a south-southwest and south-southeast direction to pass through the first of several water gaps encountered on its journey to reach the southeast oriented Schuylkill River. South of the […]
Stony Creek flows in a southwest and south direction in Montgomery County to join the southeast oriented Schuylkill River at Norristown. Southwest oriented Stony Creek headwaters and headwaters tributaries are linked by shallow through valleys with the south oriented Wissahickon Creek valley to the east. Other Stony Creek tributaries flow in south, southwest, and northeast […]
After flowing in a southwest, south, south-southeast, and east direction Wissahickon Creek turns at its Gynedd Valley Elbow of Capture to flow in a south direction through its Gynedd Valley Water Gap. Southwest and west-southwest oriented Trewellyn Creek joins the east oriented Wissahickon Creek segment at the Gynedd Valley Elbow of Capture. The Gynedd Valley […]
The Dresher-Pennypack Creek Through valley extends in a northeast direction from Dresher to the Pennypack Creek valley between Fulmor and Heaton and is today used by the Pennsylvania Turnpike and a Norfolk Southern freight rail line to cross the Pennypack Creek-Wissahickon Creek drainage divide. The through valley floor elevation at that drainage divide is between […]
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 […]
Wissahickon Creek after flowing for approximately six miles in a south-southeast direction through the Wissahickon Gorge turns to flow in an east direction where it is joined by southwest oriented Monoshone Creek. But, instead of continuing in a south-southeast or east direction Wissahickon Creek makes an abrupt turn to flow in a southwest direction along […]
The Marble Hall Through Valley between Spring Mill Creek and Wissahickon Creek is one of several through valleys linking the Wissahickon Creek valley upstream from the Wissahickon Gorge with the Schuylkill River valley and is located in Marble Hall between Lafayette Hill and Barren Hill. Wissahickon Creek flows in a south direction at the through […]
The Whitemarsh Through Valley between Plymouth Creek and Wissahickon Creeks is one of several low elevation through valleys linking the Wissahickon Creek valley upstream from Wissahickon Gorge with the Schuylkill River and is a west to east oriented valley underlain by easily eroded bedrock and bounded on the south by an erosion resistant upland and […]
Sandy Run originates in Roslyn and flows in a west direction along the Camp Hill ridge south flank or the Whitemarsh Valley north side toward the south oriented Wissahickon Creek, but instead of continuing in a west direction Sandy Run turns abruptly at the Sandy Run Elbow of Capture to flow in a north direction […]
Two adjacent water gaps can be seen just south of Fort Washington. The first, the Wissahickon Water Gap, is where Wissahickon Creek flows in a south direction between Fort Hill (east) and Militia Hill (west). The second, the Sandy Run Water Gap, is where Sandy Run turns from flowing in a west direction to flow […]
Wissahickon Creek originates near Lansdale at an elevation of approximately 400 feet and its headwaters flow in a southwest direction for a distance of approximately 4 miles before reaching an elevation of about 300 feet where the stream turns to flow in a southeast direction through its first water gap. Wissahickon Creek headwaters are bounded […]
Southwest oriented North Branch Neshaminy Creek and southwest oriented Pine Run join northeast oriented West Branch Neshaminy Creek at Chalfont to create the meandering and east oriented Neshaminy Creek, which eventually meanders in a southeast, south-southeast, and south direction to join a southwest oriented Delaware River segment. The Chalfont Elbow of Capture is just one […]
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 […]
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