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The New York–Pennsylvania border is the state line between the 
The survey of the 
The survey of the Erie Triangle boundary in 1789 was by the top surveyor in the United States of the time,
Map of the initial monument
{{DEFAULTSORT:New York-Pennsylvania border Pennsylvania border Borders of Pennsylvania
The New York–Pennsylvania border is the state line between the U.S. state
In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its so ...
s of New York
New York most commonly refers to:
* New York (state), a state in the northeastern United States
* New York City, the most populous city in the United States, located in the state of New York
New York may also refer to:
Places United Kingdom
* ...
and Pennsylvania
Pennsylvania, officially the Commonwealth of Pennsylvania, is a U.S. state, state spanning the Mid-Atlantic (United States), Mid-Atlantic, Northeastern United States, Northeastern, Appalachian, and Great Lakes region, Great Lakes regions o ...
. It has three sections:
* Along the center line of the Delaware River
The Delaware River is a major river in the Mid-Atlantic region of the United States and is the longest free-flowing (undammed) river in the Eastern United States. From the meeting of its branches in Hancock, New York, the river flows for a ...
from the Tri-States Monument
The Tri-States Monument (also known as Tri-State Rock) is a granite monument that marks the tripoint of the state boundaries of New Jersey, New York, and Pennsylvania. It is at the northwestern end of the boundary between New Jersey and New York, ...
tripoint
A triple border, tripoint, trijunction, triple point, or tri-border area is a geography, geographical point at which the boundaries of three countries or Administrative division, subnational entities meet. There are 175 international tripoints ...
with New Jersey
New Jersey is a U.S. state, state located in both the Mid-Atlantic States, Mid-Atlantic and Northeastern United States, Northeastern regions of the United States. Located at the geographic hub of the urban area, heavily urbanized Northeas ...
at the confluence of the Delaware with the Neversink River in Port Jervis, New York
Port Jervis, named after John Bloomfield Jervis, a Roman civil engineer who oversaw the construction of the Delaware and Hudson Canal, is a city located at the confluence of the Neversink and Delaware rivers in western Orange County, New York, ...
to the 42nd parallel north
The 42nd parallel north is a circle of latitude that is 42 degree (angle), degrees true north, north of the Earth, Earth's equator, equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atla ...
between Hancock, New York
Hancock is a town in Delaware County, New York, United States. The town contains a village, also named Hancock. The town is in the southwest part of the county. The population was 2,764 at the 2020 census. The town is the largest by area in De ...
and Deposit, New York
Deposit is a Administrative divisions of New York#Town, town in Delaware County, New York, Delaware County, New York (state), New York, United States. As of the 2020 census, the town's population was 1,427.United States Census Bureau, 2020 U.S. ...
about 2.8 km downstream from Hale Eddy; above Hancock
Hancock may refer to:
Places
Places in the United States
* Hancock, Iowa
* Hancock, Maine
* Hancock, Maryland
* Hancock, Massachusetts
* Hancock, Michigan
* Hancock, Minnesota
* Hancock, Missouri
* Hancock, New Hampshire
** Hancock (CDP), New H ...
this is the West branch of the Delaware;
* Across the 42nd parallel north
The 42nd parallel north is a circle of latitude that is 42 degree (angle), degrees true north, north of the Earth, Earth's equator, equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atla ...
to the corner of the Erie Triangle;
* North along the east boundary of the Erie Triangle to Lake Erie
Lake Erie ( ) is the fourth-largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and also has the shortest avera ...
.
The survey of the 42nd parallel north
The 42nd parallel north is a circle of latitude that is 42 degree (angle), degrees true north, north of the Earth, Earth's equator, equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atla ...
was carried out in 1785–86 and accepted by the two states in 1787. The surveying technique that was used at the time was not especially accurate, and as such, this boundary wanders a bit on both sides of the true parallel. The 82nd mile stone was used as the starting point of the Preemption Line
The Preemption Line (also spelled Pre-Emption) divided the aboriginal lands of western New York State awarded to New York from those awarded to the Commonwealth of Massachusetts by the Treaty of Hartford of 1786. It was defined as the meridian (n ...
defined in the Treaty of Hartford in 1786 to separate Massachusetts
Massachusetts ( ; ), officially the Commonwealth of Massachusetts, is a U.S. state, state in the New England region of the Northeastern United States. It borders the Atlantic Ocean and the Gulf of Maine to its east, Connecticut and Rhode ...
and New York State
New York, also called New York State, is a state in the northeastern United States. Bordered by New England to the east, Canada to the north, and Pennsylvania and New Jersey to the south, its territory extends into both the Atlantic Ocean and ...
land claims in Western New York
Western New York (WNY) is the westernmost region of the U.S. state of New York (state), New York. The eastern boundary of the region is not consistently defined by state agencies or those who call themselves "Western New Yorkers". Almost all so ...
.
The survey of the Erie Triangle boundary in 1789 was by the top surveyor in the United States of the time, Andrew Ellicott
Andrew Ellicott (January 24, 1754 – August 28, 1820) was an American land surveyor who helped map many of the territories west of the Appalachians, surveyed the boundaries of the District of Columbia, continued and completed Pierre (Pe ...
.
The starting point of the 42nd parallel north
The 42nd parallel north is a circle of latitude that is 42 degree (angle), degrees true north, north of the Earth, Earth's equator, equatorial plane. It crosses Europe, the Mediterranean Sea, Asia, the Pacific Ocean, North America, and the Atla ...
line is in the Delaware River
The Delaware River is a major river in the Mid-Atlantic region of the United States and is the longest free-flowing (undammed) river in the Eastern United States. From the meeting of its branches in Hancock, New York, the river flows for a ...
at the northeast corner of Wayne County, Pennsylvania
Wayne County is a county in the Commonwealth of Pennsylvania. The county's population was 51,155 at the 2020 census. The county seat is the Borough of Honesdale. The county was formed from part of Northampton County on March 21, 1798, and was ...
at 41°59′57″ N, 75°21′35″ W WGS 84
The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS. The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also descri ...
. The initial surveyor's monument is just west of Faulkner Road at 41°59′58″ N, 75°21′43″ W.
The corner point of the Erie Triangle in modern coordinates is 41°59′55″ N, 79°45′43″ W.
The distance along the east–west line is approximately .
The counties that surround the east–west line are known collectively as the Twin Tiers
The Twin Tiers are the collective counties that lie on the New York–Pennsylvania border on either side of the 42nd parallel north. The region is predominantly rural and contains many small towns.
Separately, the two halves of the Twin Tiers ...
.
See also
*Northern Tier (Pennsylvania)
The Northern Tier is a geographic region consisting of five rural counties in North Central Pennsylvania, north-central Pennsylvania.
Geography
The region is bordered to the north by the Southern Tier of New York (state), New York state. Togeth ...
* Southern Tier
The Southern Tier is a geographic subregion of the broader Upstate New York, Upstate region of New York (state), New York State, geographically situated along or very near the state border with Pennsylvania. Definitions of the region vary wide ...
(New York)
References
External links
Map of the initial monument
{{DEFAULTSORT:New York-Pennsylvania border Pennsylvania border Borders of Pennsylvania