Archives for January, 2015

Delaware River-North Branch Neshaminy Creek Plumstead Township Through Valley

The Delaware River-North Branch Neshaminy Creek Plumstead Township through valley extends in a southwest direction from Point Pleasant along the Delaware River to southwest oriented North Branch Neshaminy Creek, which at Chalfont joins east and southeast oriented Neshaminy Creek as a barbed tributary. Geddes Creek and a tributary drain the through valley northeast end. Geddes […]

Core Creek Elbow of Capture East of Newtown, PA

The Core Creek Elbow of Capture east of Newtown, PA poses an intriguing problem as Core Creek first flows in a southeast direction toward the nearby Delaware River and then abruptly turns to flow in a southwest direction to eventually join Neshaminy Creek. Further shallow west-southwest to east-northeast oriented through valleys link the southeast and […]

Shallow Through Valleys Crossing the Neshaminy Creek-Newtown Creek Drainage Divide

Newtown Creek (location 2, 4, and 5 in figure 1) is a relatively minor stream flowing in a southeast, east-northeast, and south direction near and through Newtown, PA to join southeast and south oriented Neshaminy Creek south of figure 1 (Neshaminy Creek flows in a southeast direction from location 1 to the figure 1 south […]

Aligned drainage and barbed tributaries in the Delaware River Valley near New Hope, PA

Aligned and barbed tributaries are commonly found along south and southeast oriented Delaware River valley segments marking the Pennsylvania and New Jersey border. One such region is the New Hope, PA and Lambertville, NJ region where the Delaware River flows in a southeast and south direction as seen in figure 1. Most tributaries from the […]

Neshimany Creek-Ironworks Creek Through Valley at Richboro

A shallow (20-40 foot deep) through valley at location 1 (in figure 1) and shown in more detail in figure 2 (at end of text) links the south and south-southeast oriented Ironworks Creek valley head with a northeast oriented valley (Potter Run) draining through Northampton Country Club and Tyler State Park to southeast and south […]

Neshaminy Creek Elbow of Capture near Neshaminy Falls

The Neshaminy Creek drainage route just downstream from Neshaminy Falls exhibits an intriguing elbow of capture seen in figure 1 below. Neshaminy Creek flows in a south, southwest and south direction from location 1 to location 2 and then turns to flow in a northeast direction before turning again to flow in a southeast direction […]

Neshaminy Creek Water Gap and Elbows of Capture near Langhorne

The Neshaminy Creek drainage route north and west of Langhorne exhibits several intriguing elbows of capture. Figure 1 below shows Neshaminy Creek flowing in a southeast direction to Bridgetown (near map northeast corner) where it then makes a U-turn to flow in a west-southwest direction to Playwick Park (near map center). East-northeast oriented Mill Creek […]

Mill Creek-Southampton Creek Through Valley

The Mill Creek-Southampton Creek through valley (illustrated in figure 1) links south-southwest oriented Southampton Creek (location 2), which flows to Pennypack Creek (seen in the figure 1 southwest corner), with southeast and east-northeast oriented Mill Creek (location 3), which flows to Neshaminy Creek (located east of figure 1). The deepest notch (location 1) has a […]

Somerton-Huntingdon Valley Through Valley

The Somerton-Huntingdon Valley Through Valley is a shallow west-southwest to east-northeast oriented continuous valley linking the south oriented Poquessing Creek valley (east) with the south oriented Pennypack Creek valley (west). The through valley west-southwest end is drained by Huntingdon Valley Creek, which flows in a south and south-southwest direction before entering the valley. The through […]

Tacony Creek Cheltenham Elbow of Capture

Tacony Creek (known also as Tookany Creek further upstream and as Frankford Creek further downstream) flows in roughly a southeast direction from Elkins Park to between Cheltenham and Ashmead Village and then turns abruptly to flow in a southwest direction between Ashmead Village and Lawndale. This abrupt change of direction is here named the Cheltenham […]

Schuylkill River Gorge

The Schuylkill River Gorge, as defined here, extends in a southeast direction for about eight miles from Spring Mill (east of Consohocken) to the Roosevelt Avenue Bridge Elbow of Capture in the City of Philadelphia. While longer than the seven-mile long Wissahickon Creek Gorge the Schuylkill River Gorge is much wider and unlike the Wissahickon […]

Tacony Creek Gorge Between Jenkintown and Elkins Park

The stream referred to in this discussion as Tacony Creek, is sometimes known as Tookany Creek in its upper reaches and as Frankford Creek as it approaches the Delaware River. This distinction probably had more significance in the past than it does today as urbanization has buried tributary creeks and otherwise altered the drainage basin. […]

Aligned drainage and Pennypack Creek barbed tributaries near Fox Chase

Pennypack Creek as seen in figure 1 flows in a southeast direction from location 1 to location 2 with two noticeable northeast oriented turns and two noticeable southwest oriented segments. Tributaries from the east identified by locations 3, 4, 5, and 6 all flow in southwest directions to join south oriented Pennypack Creek segments at […]

Schuylkill River Spring Mill Elbow of Capture

The Schuylkill River flows in a south direction from Norristown to West Conshohocken where it turns to flow in an east-northeast direction to Spring Mill and then turns abruptly to flow in a southeast direction through the eight-mile long Schuylkill Gorge carved in erosion resistant metamorphic and igneous rocks. The gorge southeast end is in the […]

Spring Mill Creek Drainage Basin Origin and History

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 […]

Delaware River Benjamin Franklin Bridge Elbow of Capture

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 […]

Schuylkill River Roosevelt Avenue and Columbia Bridge Elbows of Capture

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 […]

The Wissahickon Gorge: Philadelphia’s Unique and Magnificent Water Gap

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 […]

Ambler Area Aligned Drainage, Barbed Tributaries, and Water Gaps

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 […]

North Wales Area Aligned Drainage, Elbow of Capture, and Water Gap

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 […]

Aligned Drainage, Barbed Tributaries, Through Valleys and Water Gaps in the Stony Creek Headwaters Area

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 […]

Wissahickon Creek Elbow of Capture and Water Gap at Gynedd Valley

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 […]

Dresher-Pennypack Creek Through 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 […]

Andorra Wind Gap

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 […]