| Gettys-Black divide | |
| Etymology: | Gettys Tavern & Black's Mill |
| Country: | United States |
| State: | Pennsylvania |
| Region Type: | County |
| Region: | Adams |
| Location: | northern point (confluence of Stevens Cr/Rock Cr) |
| Coordinates: | 39.7863°N -77.2392°W |
| Range Coordinates: | 39.8369°N -77.2215°W |
| Highest: | Big Round Top |
| Highest Location: | north slope |
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, the divide extends southward across several strategic features of the Gettysburg Battlefield:
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.