Rock Creek (Monocacy River tributary)
Rock Creek is an 18.9-mile-long (30.4 km) tributary of the Monocacy River in south-central Pennsylvania and serves as the border between Cumberland and Mount Joy townships.

Rock Creek (Monocacy River tributary)

Section Title:
Table Section Text: Rock Creek is an 18.9-mile-long (30.4 km) tributary of the Monocacy River in south-central Pennsylvania and serves as the border between Cumberland and Mount Joy townships.

Rock Creek intersections, north-to-south

Intersection	Location/Description	Coordinates

Sources	On drainage divide with Conewago Creek Northernmost watershed point: Summit near Oak Hill Rd: Summit on Stone Jug Rd: Summit on Harrisburg Rd:	39°55′17″N 77°11′21″W / 39.92145°N 77.18907°W [specify] [specify] [specify]

Leedy Rd	39°53′55″N 77°11′24″W / 39.898669°N 77.190043°W

Shriver's Corner Rd	39°53′38″N 77°11′40″W / 39.894012°N 77.194464°W

Keller Rd	39°53′18″N 77°11′57″W / 39.888435°N 77.199297°W

Branch	-	39°52′14″N 77°12′50″W / 39.87042°N 77.213781°W

Branch	Extends beyond Shriver's Corner Road (at Goldenville Rd) to just beyond Rentzel Rd: 39°54′43″N 77°11′44″W / 39.911909°N 77.19552°W	39°51′53″N 77°13′07″W / 39.864656°N 77.21848°W

Boyd's Schoolhouse Rd	Cumberland/Straban township border	39°51′24″N 77°13′24″W / 39.85667°N 77.22333°W

Survey line	Borough line

"Site 59" on creek in Cumberland and Straban townships "intended for flood control".[4]

Blocher's Run	Flow from Marsh Creek (west) & Conewago Creek (north) triple pt on Oak Ridge:39°51′32″N 77°14′41″W / 39.858792°N 77.24483°W}	39°50′52″N 77°13′33″W / 39.847665°N 77.225797°W

US 15 Bus.	Harrisburg Road site of former 1846 covered bridge built by Joseph Clapsaddle near Barlow Knoll	39°50′41″N 77°13′22″W / 39.84472°N 77.22278°W

Run	drainage from the east

Run	Drainage along former site of Alm's house from Gettysburg College's Quarry Lake & Oak Ridge triple point (with Willoughby/Pitzer Runs)	39°50′17″N 77°13′17″W / 39.838126°N 77.221412°W

Stevens Creek	39°50′13″N 77°13′17″W / 39.836882°N 77.221527°W

Island	Depicted on 1916 Gettysburg National Military Park map

Run	(Depicted on battlefield map at right)

Railroad	Early's Confederates burned the trestle on June 27, 1863 [5](rebuilt days later & in 1912)[6]

-	1807 3-arch [7] stone bridge of 60 ft (18 m), 1853 covered bridge, 1919 Lincoln Highway bridge,[8] replacement [9]	39°50′54″N 77°13′11″W / 39.84833°N 77.21972°W

-	Site of former 1853 90-foot covered bridge built by John Finly and 1932 concrete bridge.[10][11]	39°49′51″N 77°13′4″W / 39.83083°N 77.21778°W

Survey line	Borough line

Winebrenner Run	[12][13]	39°49′47″N 77°13′05″W / 39.829632°N 77.217922°W

Rock Creek Ravine	Location noted in several battle records	39°49′35″N 77°13′03″W / 39.826369°N 77.217579°W

Jones Bridge Run?	Flows north of Culp's Hill to confluence just upstream of island	39°49′20″N 77°13′03″W / 39.822117°N 77.217504°W

Survey line	1893 Warren survey line for Gettysburg Battlefield crossed creek [14]

Benner Run	Flows southeast of Benner's Hill artillery location ("Ladys Run" in 1886)[15]	39°49′11″N 77°12′50″W / 39.819645°N 77.213974°W

Ford	between Spangler Spring and farm (Z. Tawney during the battle)

Spangler Spring Run	Drainage southward from Stevens Knoll	39°48′51″N 77°12′54″W / 39.814124°N 77.215079°W

Guinn Run[16]	39°48′39″N 77°12′52″W / 39.81083°N 77.21444°W

Former site of McAllister's Mill dam (destroyed by 1870 flood)[17]

Run	(Depicted on battlefield map at right)

Ford	1889 road downstream of McAllister's Mill[18]

Baltimore Pike	-	39°48′18″N 77°12′41″W / 39.80500°N 77.21139°W

Run	Flows under Baltimore Pike	39°48′10″N 77°12′39″W / 39.802645°N 77.210825°W

Run	39°47′55″N 77°12′28″W / 39.798701°N 77.207869°W

Run	39°47′38″N 77°12′33″W / 39.794015°N 77.209296°W

-	Near site of Battle of Gettysburg field hospital at George Bushman Farm:39°47′27″N 77°12′54″W / 39.79083°N 77.21500°W

White Run	Drainage from Lake Heritage, Pennsylvania	39°47′05″N 77°12′20″W / 39.784651°N 77.205552°W

Run	Drainage from Weikert Hill and Round Top, Pennsylvania	39°46′52″N 77°12′42″W / 39.781234°N 77.211699°W

Wright Avenue Run	from Big Round Top

Sachs Road	1891 bridge	39°46.950′N 77°12.387′W / 39.782500°N 77.206450°W

Little's Run	"Two Taverns Run" in 1901 [19] when bridge was built at Little's Tavern headpoint near White Hall:39°47′25″N 77°06′46″W / 39.79027°N 77.112651°W	39°46′45″N 77°12′45″W / 39.77928°N 77.212579°W

Soloman Road	1895 steel Burr arch bridge[20] "Lott's Bridge"[21] at "Lott's fording" & 1977 ("Lott's Bridge") near Pine Bank Cemetery	39°46.339′N 77°12.532′W / 39.772317°N 77.208867°W

Run	39°46′18″N 77°12′43″W / 39.771634°N 77.212029°W

Rock Creek Ford	Former ford just upstream of bend in creek with overhanging cliff	39°46′17″N 77°13′09″W / 39.771504°N 77.219124°W

Distributary	Former headpoint of millrace	39°45′30″N 77°13′31″W / 39.758325°N 77.225368°W

Dam ruins	Former 1798 Black's/Horner's Mill dam to provide head for millrace (rebuilt 1937)	39°46′17″N 77°13′09″W / 39.771504°N 77.219124°W

Plum Run	Named "Rock" Run in 1821	39°45′32″N 77°13′37″W / 39.758969°N 77.226806°W

-	Taneytown Rd at Barlow: 1841 covered bridge, c. 1872 replacement, 1923 & 1989 concrete bridges	39°45′24″N 77°13′53″W / 39.75667°N 77.23139°W

Run	Flow from southwest of Big Round Top	39°45′16″N 77°13′58″W / 39.754449°N 77.232642°W

Run	39°45′15″N 77°13′58″W / 39.754152°N 77.232771°W

Cromer's Ford	Former ford for Chapel Road route south to Taneytown Rd (horse team, wagon, & driver swept away in 1875)	39°45′14″N 77°13′57″W / 39.75402°N 77.232599°W

Run	Upstream of site of former ford at Benner Rd	39°44′44″N 77°13′57″W / 39.745606°N 77.232385°W

Run	Near former intersection of Taneytown Rd & Basehoar-Roth Rd, and upstream of former Swetland Rd ford	39°44′24″N 77°13′08″W / 39.740095°N 77.218995°W

Mason-Dixon Rd	("Rock Creek Rd") site of 192-foot, single-span 1890 Burr arch bridge (east span collapsed January 5, 1946)[22]	39°43.800′N 77°13.819′W / 39.730000°N 77.230317°W

Lousy Run	Near The Links	39°43′24″N 77°13′44″W / 39.723445°N 77.228887°W

Mouth	Confluence with Marsh Creek ("The Points")	39°43′12.7″N 77°13′3.7″W / 39.720194°N 77.217694°W

Sentence(s)

Blocher's Run is a stream which flows from Oak Ridge (triple point at 39.858792°N 77.24483°W), to the Rock Creek (39.847665°N 77.225797°W).

final_sentence: Blocher's Run is a stream which flows from Oak Ridge (triple point at 39.858792°N 77.24483°W), to the Rock Creek (39.847665°N 77.225797°W).