Skip to content

Tri-State Monument

Tri-State Monument is a historic site in New Jersey, at a modelled elevation of 126 m. High Point stands 551 m to the southeast, 3.0 miles off. The nearest named place is Airport Park, a park 0.3 miles away. Upper Delaware Scenic Byway (Route 97) passes 1.4 miles off.

The story

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, the northern end of the boundary between New Jersey and Pennsylvania, and the eastern end of the boundary between New York and Pennsylvania. The monument is located at the confluence of the Delaware and Neversink rivers. This location is also known as Carpenter's Point. The nearby Witness Monument, also known as the Reference Monument or the western State Line Monument, is a taller upright granite monument located south of the Laurel Grove Cemetery in Port Jervis, New York, and under a bridge for Interstate 84. It is not directly on any state boundary, but instead witnesses the location of two points: this tripoint and the corner boundary point between New York and Pennsylvania in the Delaware River. The Supreme Court of the United States summarized the boundaries of these three states with respect to this monument in New Jersey v. New York, 283 U.S. 336 (1931):

... where it (the Delaware) forms a boundary between New York and Pennsylvania. The Delaware continues its course as such boundary to Tristate Rock, near Port Jervis in New York, at which point Pennsylvania and New York are met by New Jersey. From there the river marks the boundary between Pennsylvania and New Jersey until Pennsylvania stops at the Delaware state line, and from then on the river divides Delaware from New Jersey until it reaches the Atlantic between Cape Henlopen and Cape May. Also, it is the northernmost point of New Jersey, in Montague Township, Sussex County.

From Wikipedia, CC BY-SA 4.0.

Dates from 1882.

Wikidata Q60521819, referenced by the OpenStreetMap record.

How to reach it

Coordinates41.35728, -74.69473

Named places within 25 miles

Parks
  • Airport Park: 0.3 mi
  • Veterans Memorial Park: 0.3 mi
  • Tri-States Playground: 0.6 mi
  • Riverside Park: 0.9 mi
  • Skinners Park: 0.9 mi
Peaks
Attractions: 51
  • Japanese Sika Deer: 10.2 mi
  • Cliff Jump: 15.1 mi
  • Sprayground: 15.1 mi
  • Fishing Village: 15.1 mi
  • Hide Tide Wavepool: 15.1 mi
Historic sites: 50
  • Indian Raid: 0.4 mi
  • Erie Roundhouse: 1.3 mi
  • High Point Monument: 3.0 mi
  • Millville Historic District: 5.3 mi
  • Lead Smelter: 7.3 mi
Beaches: 44
  • West End Beach: 1.5 mi
  • High Point Beach: 3.2 mi
  • Stone Beach: 5.2 mi
  • PWLPOA Beach: 9.8 mi
  • Stokes Beach: 11.5 mi
Nature reserves: 35
Waterfalls: 26
Museums: 19
Gardens: 12
  • The Meditation Garden: 14.5 mi
  • The Smith-Harker Community Garden: 15.1 mi
  • Founder's Park: 15.6 mi
  • New York City: 19.9 mi
  • Midtown: 19.9 mi
Rest areas: 5
  • Pike Welcome Center: 0.9 mi
  • Greenville Text Stop Eastbound: 3.0 mi
  • Greenville Text Stop Westbound: 3.1 mi
  • Middletown Rest Area: 16.2 mi
  • Wallkill Rest Area: 22.3 mi
Cliffs: 3
  • The Cliff: 7.9 mi
  • steep bluff: 8.8 mi
  • Pike Rock: 20.4 mi
Artworks: 3
  • Buffalo Statue: 10.2 mi
  • Glass Tentacles: 13.8 mi
  • Wine and Design Warwick: 18.4 mi
Springs: 2
Ghost towns: 2
Picnic sites: 2

Summits around it

The highest named summits within 19.2 miles of Tri-State Monument. Elevation from each summit’s own record; bearing measured between the two coordinates.

SummitBearingElevationDistance
High PointSE 146°551 m3.0 mi
Sunrise MountainS 188°500 m9.7 mi
Bald HillW 265°468 m13.4 mi
Bald HillWSW 248°467 m17.1 mi
Bald HillWNW 284°464 m13.1 mi
Little Bald HillWSW 249°461 m16.1 mi
Rattlesnake MountainSSW 209°454 m17.9 mi
Bald BarrenWSW 246°452 m18.5 mi

When to go

Light through the year

DateSunriseGolden hourSunset
March equinox07:0318:3519:11
June solstice05:2619:5420:36
September equinox06:4718:2118:58
December solstice07:2215:4916:33

Local time (America/New_York).

Climate normals

Months averaging 50–80 °F: May–Oct.

JanFebMarAprMayJunJulAugSepOctNovDec
Avg °F252735475867727062514030
Precip in3.12.63.73.83.64.74.74.64.54.73.33.9

1991–2020 U.S. Climate Normals, NOAA NCEI — Port Jervis, 2 mi away.

Where this comes from

Location and category confirmed against OpenStreetMap.

OpenStreetMapWikidata

OpenStreetMap element node/2406497097

More historic sites in New Jersey

Day trips start here

Drive to it

Byway plans a real route around stops like this one.

Private beta · Free to join

Take the scenic way to Tri-State Monument.

Byway plans around your taste, verified places, real weather and opening hours — then opens every leg in Google Maps with one tap.

Private beta · Free to join · No card · Invite when a spot opens