Green River Island

Green River Island is one of those places that seems to belong to the wrong state. In this instance it feels like it should be part of Indiana but it’s actually part of Kentucky. It hardly seems like an island either although vestiges of its old topography continue to remain visible. Rather, the “island” has attached rather firmly to Indiana with no physical connectivity to Kentucky. It’s an exclave, albeit an accessible one for Kentuckians via the Route 41 bridge over the Ohio River.

Green River Island is also a bit of a misnomer. It’s definitely within the Ohio River, however the Green River confluence occurs on the opposite riverbank near its southeastern tip (map). That provides the name.

Big deal, an astute 12MC reader might conclude and with good reason. The major rivers of the vast North American interior — the Mississippi, Missouri and Ohio — are known to change course in various places along their routes from time-to-time. Early leaders established state boundaries along those mighty watercourses and now we have to live with the consequences, a bunch of residual chunks of land on the “wrong” sides of the rivers. It’s completely commonplace after the passage of two centuries. Why even mention Green River Island? I agree. It’s happened in dozens if not hundreds of spots.


It Sparked a Supreme Court Case

However, few instances have led to a precedence-setting Supreme Court decision like Green River Island did in 1890. The Supreme Court has original jurisdiction in disputes that cannot be resolved between individual states (Article III. Section 2.: “In all Cases affecting Ambassadors, other public Ministers and Consuls, and those in which a State shall be Party, the Supreme Court shall have original Jurisdiction.“) so it got involved directly in this mess and reached a definitive conclusion. The court ruled that Green River Island belonged within Kentucky.

My interests seem odd, I know. I rather enjoy reading through geography-related Supreme Court decisions such as Indiana v. Kentucky. Let me see if I can summarize the logic behind the Court’s decision and put it into easy-to-understand English.


The Facts

  • This entire area belonged to Virginia in its original colonial charter.
  • Virginia relinquished its colonial claim to all land northwest of the Ohio River to the nascent United States government, which accepted it in 1784. However, the Ohio River remained outside of the bargain. Virginia kept the river and ceded only the land northwest of it.
  • Virginia ceded even more of its territory in 1789 to form the new state of Kentucky which entered the Union in 1792. The adjacent Ohio River conveyed to Kentucky since it formed part of Virginia territory prior to that. The Kentucky border became the low-water mark on the far side of the river.
  • Green River Island appeared to be an actual an island when Kentucky became a state. Surveys conducted at the time confirmed this condition and fixed the border accordingly.
  • Indiana became a state in 1816. Its southern border abutted the Kentucky border.
  • Indiana started to question Kentucky’s ownership of Green River Island in the 1870’s. It compiled anecdotal evidence to suggest that the so-called Island had been connected to mainland Indiana for at least parts of the year when Indiana became a state. Thus, it must be part of Indiana.
  • The Court disagreed with Indiana. The originally established Kentucky included Green River Island. That remained the case even thought the channel silted-up over time. And by the way, Indiana shouldn’t have waited several decades to start complaining either.

The Decision

As the Supreme Court said in 1890:

“Our conclusion is, that the waters of the Ohio River, when Kentucky became a State, flowed in a channel north of the tract known as Green River Island, and that the jurisdiction of Kentucky at that time extended, and ever since has extended, to what was then low-water mark on the north side of that channel, and the boundary between Kentucky and Indiana must run on that line, as nearly as it can now be ascertained, after the channel has been filled.”


Implications

“Indiana v Kentucky” continues to be cited as precedence for an entire class of internal U.S. border disputes up to the present. It also resulted in some interesting implications on the ground over time. Green River Island, Kentucky falls directly outside of Evansville, the largest city in southern Indiana.

We’ve seen before what can happen at a border between jurisdictions with different levels of taxation or permissiveness. Green River Island caters to a couple of different vices.

Horse Racing & Gambling

Indiana didn’t have any horse racing tracks or parimutuel betting until a couple of decades ago and Kentucky, well, Kentucky had its famous Derby and a huge entrenched horse racing industry. It didn’t take a genius to sense a business opportunity. Sure enough, the Ellis Park horse track sprouted on Green River Island in 1922 where it remains to this day. The island sits at the doorstep of a metropolitan area with upwards of 350,000 residents.

Tobacco

Gambling wasn’t the only vice-based business opportunity on Green River Island. I zoomed-in on the northern tip and found another: Marina Pointe Tobacco Outlet. It maintains an Indiana address according to internet resources (1827 Waterworks Road, Evansville, Indiana) BUT it also advertises “Kentucky Prices.”

It appears that the smoke shop actually sits on the Kentucky side of the border. I checked a USGS topographic map and it seems the border drawn by Google Maps appears essentially correct in spite of the oddly-placed road. As one website explained, “Ed knew way too many people who were making a weekly pilgrimage across the Ohio River to save a few dollars on tobacco, and he decided to do something about it.

Indeed, cigarette excise taxes vary greatly by state. A carton of cigarettes in Kentucky will cost almost $4 less than an identical carton in Indiana due solely to tax rate differences.

And One More Thing

Evansville, IN \ Landing Ship memorial (#0428). Photo by Don Barrett; (CC BY-NC-ND 2.0)
LST-325

I found one other interesting feature on Green River Island where the state border cuts through its present-day tip. This has absolutely nothing to do with vices or business opportunities. Rather, it’s a museum, the USS LST Ship Memorial: “The LST (Landing Ship, Tank) is an amphibious vessel designed to land battle-ready tanks, troops and supplies directly onto enemy shores.” The ship moored at the museum is the LST-325 and it served in World War II, Arctic operations and the Greek Navy before coming to the museum in 2000. Thus, the museum sits in Indiana while the ship itself rests in Kentucky!

UPDATE: the ship and museum moved across the river next to downtown Evansville. I visited it in 2021.

I’m going to have to add Green River Island to the list of places I hope to visit someday.

Comments

4 responses to “Green River Island”

  1. Daniel Harper Avatar

    I don’t really have anything to add to this except that I just read it and couldn’t bear to have an entry with such a quantity of research be left with no comments whatsoever. It’s perhaps not the kind of sexy geo-geek stuff that drives the pageviews via random Google searches, but it’s the kind of stuff that brings me back, so kudos.

    For the sake of conversation I’ll add that the only times I’ve been in Kentucky are of the “just passing through” variety, going from my birth state of Alabama to my current home, Michigan, and pretty much always along I-65. While I love bridges in concept I have a bit of a phobia in practice, and that bridge connecting northern Kentucky to southern Indiana is a bit of a beast from my perspective.

    One day I hope to have the time to do the bourbon trail, but I haven’t managed it yet.

    1. Twelve Mile Circle Avatar

      Thanks Daniel. Travel plans for next summer are beginning to gel and Kentucky is high on the list of 12MC adventure possibilities. We’ve spent a boatload of $$$ shipping a family of four to Oregon, Utah and Alaska respectively the last three summers so we’re honing-in on places within driving distance. Stay tuned!

  2. Fritz Keppler Avatar
    Fritz Keppler

    These vagaries of historical river flow patterns creating islands are very helpful in my quest to cross county lines, especially along the Mississippi but also on some other smaller rivers such as the Wabash. Adjacent counties in states bordering the rivers can sometimes be accessed by driving or walking along roads crossing over to these islands, many of which are not bridged or otherwise conveyanced by ferry. Earlier this year I walked along a dirt road to cross from Tunica County MS to Crittenden County AR, and then tramped through a brambly thicket to cross the line between Crittenden and De Soto County MS.

    Some lines I have to try to cross again, due to periods of high water when I was there, such as between Mississippi County MO and Carlisle County KY.

  3. Joseph Vanbibber Avatar
    Joseph Vanbibber

    This happens to be “up my river” lol I can tell a ton of cool info about the green river island. Shoot me an email

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