The Gettys-Black divide is the primary drainage divide of Cumberland Township, Adams County, Pennsylvania; extending from the mouth of Stevens Creek southward past Samuel Gettys' 1761 tavern ~7 miles to the mouth of Plum Run at the dam site for Robert Black's 1798 Mill.[1] From a ridge within the Gettysburg borough,^[specify] the divide extends southward across several strategic features of the Gettysburg Battlefield:

• Cemetery Hill (503 ft)^{[verification needed]}
• Cemetery Ridge, including the triple point for Plum R/Stevens Cr (west) & Rock Cr (east)
• Weikert Hill
• Little Round Top
• Big Round Top

Gettys-Black divide
The northern part of the divide is roughly along a Union line (blue) during the Battle of Gettysburg (the map inaccurately depicts Big Round Top west of Plum Run).
Highest point
Peak	Big Round Top, north slope [verification needed]
Elevation	[specify]
Coordinates	39°47′10.73″N 77°14′21.15″W
Naming
Etymology	Gettys Tavern & Black's Mill
Geography
Location	northern point (confluence of Stevens Cr/Rock Cr)
Country	United States
State	Pennsylvania
County	Adams
Range coordinates	39°50′12.77″N 77°13′17.5″W

The divide descends the east slope of Big Round Top and passes north of a drainage, then extends south-southeast across farm fields near the Taneytown Road to Rock Creek at the unincorporated community of Barlow, Pennsylvania.

References