Rock Run
pushpin map showing location of Rock Run
pushpin map showing location of Rock Run
Rock Run
Location
CountryUnited States
StatePennsylvania
CountyBucks
TownshipLower Makefield
Falls
Physical characteristics
Source 
 • coordinates40°12′24″N 74°50′38″W / 40.20667°N 74.84389°W / 40.20667; -74.84389
 • elevation150 feet (46 m)
Mouth 
 • coordinates
40°10′36″N 74°48′39″W / 40.17667°N 74.81083°W / 40.17667; -74.81083
 • elevation
33 feet (10 m)
Length4.81 miles (7.74 km)
Basin size4.87 square miles (12.6 km2)
Basin features
ProgressionRock Run → Martins Creek → Delaware River → Delaware Bay
River systemDelaware River
BridgesStony Hill Road
David Terrace
Esther Lane
Derbyshire Road
Makefield Road
Big Oak Road
Kent Drive
Valley Road
Alden Avenue
West Trenton Avenue
Pine Grove Road
U.S. Route 1 (Lincoln Highway)
SEPTA Railroad
Newbold Road
Tyburn Road
Slope
24.32 feet per mile (4.606 m/km)

Rock Run is a tributary of Martins Creek in Lower Makefield Township in Bucks County, Pennsylvania in the United States.

Statistics

Rock Run was entered into the Geographic Names Information System of the U.S. Geological Survey on 2 August 1979 as identification number 1185276.[1] It is also listed in the Pennsylvania Gazatteer of Streams as identification number 02922.[2]

Course

Rock Run rises near Big Oak Road and Stony Hill Road in the southern portion of Lower Makefield Township at an elevation of approximately 150 feet (46 m) and is generally east oriented until river mile 2.87 where it makes a 90° turn to the right flowing south as it receives a tributary from the left. After about a mile it then turns east, then south and southwest until it discharges at Martins Creek's 3.20 river mile.[3]

Geology

Rock Run rises in the Felsic Gneiss formation laid during the Precambrian, light buff to pink and medium to fine grained rock, mineralogy includes quartz, microcline, pyroxene, and biotite. As it flows east, it runs into the Pensauken and Bridgeton Formations laid down during the Tertiary period, yellow to reddish brown feldspathic quartz sand, coarse gravel, and boulder. Then it finally flows into the Trenton Gravel Formation from the Quaternary, consisting of feldspathic quartz sand which is reddish brown, yellow, and white, with some beds of gravel.[4]

Crossings and Bridges

[5]

CrossingNBI NumberLengthLanesSpansMaterial/DesignBuiltReconstructedLatitudeLongitude
Stony Hill Road---------
David Terrace---------
Esther Lane---------
Derbyshire Road---------
Makefield Road---------
Big Oak Road719810 metres (33 ft)22Concrete slab1955-40°12'32"N74°49'8.64"W
Kent Drive---------
Valley Road---------
Alden Avenue76068 metres (26 ft)21Prestressed concrete box beam or girders - multiple1962-40°12'17.1"N74°48'41"W
West Trenton Avenue72199 metres (30 ft)21Concrete continuous stringer/multi-beam or girder1920194040°12'6.2"N74°48'33.8"W
Pine Grove Road731010 metres (33 ft)21Concrete Tee beam1957-40°11'57.2"N74°48'10.27"W
U.S. Route 1 (Lincoln Highway)674610 metres (33 ft)31Prestressed concrete box beam or girders - single or spread1954198540°11'49.1"N74°47'53.25"W
SEPTA Railroad---------
Newbold Road735518 metres (59 ft)22Concrete Tee Beam1954-40°11'36.7"N74°47'53.93"W
Tyburn Road718426 metres (85 ft)22Concrete tee beam1954-40°10'50.2"N74°48'24.87"W

See also

References

  1. ↑ U.S. Geological Survey Geographic Names Information System: Rock Run
  2. ↑ paGazetteerOfStreams, lycomingedu, p119, I.D. 02922 (PDF)
  3. ↑ "GNIS Feature Search". TNM download. U.S. Geological Survey, U.S. Department of the Interior. Retrieved 9 March 2018.
  4. ↑ "Pennsylvania Geological Survey". PaGEODE. Pennsylvania Department of Conservation and Natural Resources. Archived from the original on 9 April 2021. Retrieved 10 March 2018.
  5. ↑ "National bridges". www.nationalbridges.com. Archived from the original on 31 October 2013. Retrieved 9 March 2018.
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