Islands divided by international borders
This article is about a list of divided islands. For the 2015 Indian book about the Sri Lankan conflict, see
This Divided Island .
This is a list of
islands whose land is divided by one or more
international borders .
Buffer zone in Nicosia
Sea islands
[
Several of the density figures, such as those marked (*) , don't agree with the other statistics. ]
Island
Area (km2 /sq mi)
Population
Countries/Dependencies (Provinces /States /Sovereign)
Area
Population
Population per km2 /per sq mi
New Guinea
[1]
785,753/303,381
[2]
11,306,940
Papua New Guinea
59%
68%
17/44
Indonesia (
Central Papua ,
Highland Papua ,
Papua ,
South Papua , and
West Papua )
41%
32%
11/28
Borneo
[3]
748,168/288,869
[2]
21,258,000
Indonesia (
Central ,
East ,
North ,
South , and
West Kalimantan )
73%
70%
27/70
Malaysia (
Sabah and
Sarawak )
26%
28%
31/80
Brunei
1%
2%
78/200
Ireland
84,421/32,595
[4]
6,806,900
Ireland
83%
72%
70/180
United Kingdom (
Northern Ireland )
17%
28%
(*) 275/710
Hispaniola
[5]
76,192/29,418
[6]
[7]
21,396,000
Dominican Republic
64%
50%
221/570
Haiti
36%
50%
391/1,010
Isla Grande de Tierra del Fuego
47,992/18,530
[2]
133,861
Chile (
Antártica Chilena ,
Tierra del Fuego )
61%
5%
(*) 0.6/1.6
Argentina (
Tierra del Fuego )
39%
95%
6.9/18
Timor
28,418/10,972
[2]
3,182,693
Indonesia (
East Nusa Tenggara )
51%
63%
128/330
East Timor
49%
37%
78/200
Cyprus
9,234/3,565
[2]
1,133,803
De jure
Cyprus
97%
98%
86/220
Akrotiri and Dhekelia (
United Kingdom )
3%
2%
62/160
De facto
Cyprus
58%
56%
81/210
Northern Cyprus
35%
41%
100/260
United Nations (
UN Buffer Zone in Cyprus )
4%
1%
(*) 88/230
Akrotiri and Dhekelia (
United Kingdom )
3%
2%
62/160
Dall Island
[8]
[9]
[10]
[11]
[12]
655.2/253.0
[2]
~20
United States (
Alaska )
<100%
100%
~0.03/0.078
Canada (
British Columbia )
>0%
none
none
Sebatik Island
452.2/174.6
[2]
105,000
Indonesia (
North Kalimantan )
55%
76%
320/830
Malaysia (
Sabah )
45%
34%
120/310
Usedom
[13]
445/172
85,047
Germany (
Mecklenburg-Vorpommern )
84%
41%
84/220
Poland (
West Pomeranian Voivodeship )
16%
59%
625/1,620
Saint Martin
91.9/35.5
[2]
77,741
Saint-Martin (
France )
59%
51%
682/1,770
Sint Maarten (
Kingdom of the Netherlands )
41%
49%
1,110/2,900
Hans Island
1.2/0.46
0
Greenland (
Kingdom of Denmark )
60%
none
none
Canada (
Nunavut )
40%
none
none
Kataja (including
Inakari
[14] )
0.71/0.27
0
Sweden (
Norrbotten County )
~85%
none
none
Finland (
Lapland )
~15%
none
none
Passport Island
[15]
0.66/0.25
~10
Bahrain (
Northern Governorate )
~50%
~50%
~8/21
Saudi Arabia (
Eastern Province )
~50%
~50%
~8/21
K Island
[16]
[17]
0.56/0.22
0
Ukraine (
Odesa Oblast )
~60%
none
none
Romania (
Tulcea County )
~40%
none
none
Koiluoto
[18]
0.03/0.012
0
Finland (
Kymenlaakso )
~60%
none
none
Russia (
Leningrad Oblast )
~40%
none
none
Vanhasaari/
Maly Pogranichny [
ru ] )
[19]
[20]
Finland (
Kymenlaakso )
Russia (
Leningrad Oblast )
Jähi
[21]
0
Finland (
Kymenlaakso )
none
none
Russia (
Leningrad Oblast )
none
none
Island southeast of Peräluoto
[22]
0
Finland (
Kymenlaakso )
none
none
Russia (
Leningrad Oblast )
none
none
Märket
0.03/0.012
0
Åland (
Finland )
~55%
none
none
Sweden (
Stockholm County and
Uppsala County )
~45%
none
none
Lake islands
Among
Finland ,
Norway , and
Sweden :
Three-Country Cairn , the boundary
cairn at the
tripoint , is 10 metres from the shore of Lake Goldajärvi/Koltajauri, and hence arguably a tiny artificial island. Around 14 m2 . The lower limit for artificial islands is a matter of definition, because near
Haparanda there are boundary poles of less than 0.1 m2 .
Between
Canada and the United States :
A lake island at
62°38′59″N 141°00′00″W / 62.649677°N 141°W / 62.649677; -141 , north of the
Yukon –
Alaska Highway
border crossing
A lake island at
62°38′28″N 141°00′00″W / 62.641158°N 141°W / 62.641158; -141 , north of the Yukon–Alaska Highway border crossing
A lake island at
62°38′14″N 141°00′00″W / 62.637174°N 141°W / 62.637174; -141 , just north of the Yukon–Alaska Highway border crossing
Two islands in a small lake at
62°32′18″N 141°00′00″W / 62.538443°N 141°W / 62.538443; -141 , 8.2 km south of the Yukon–Alaska Highway border crossing
Several rocky islets in a small lake on the
Okanogan County ,
Washington /
British Columbia border at
49°00′00″N 120°10′39″W / 49°N 120.177376°W / 49; -120.177376
An island in a small lake on the Okanogan County, Washington/British Columbia border at
49°00′00″N 120°10′23″W / 49°N 120.172980°W / 49; -120.172980
An island in a small lake adjacent to the
Milk River at
49°00′00″N 110°32′49″W / 49°N 110.546975°W / 49; -110.546975 in
Montana /
Alberta
An island in
Salt Lake (Alkali Lake)
49°00′00″N 104°18′40″W / 49°N 104.311173°W / 49; -104.311173 in Montana/
Saskatchewan
An island
[23]
[24] in
Brush Lake at
49°00′00″N 103°58′54″W / 49°N 103.981638°W / 49; -103.981638 in
North Dakota /Saskatchewan
Two islands
[25]
[26] in
Boundary Lake at
49°00′00″N 100°13′02″W / 49°N 100.217095°W / 49; -100.217095 , in North Dakota/
Manitoba
An island
[27]
[28] in
Lake Metigoshe at
49°00′00″N 100°21′14″W / 49°N 100.353901°W / 49; -100.353901 in North Dakota/Manitoba
An islet
[29]
[30] east of
Ross Lake at
49°00′00″N 100°17′56″W / 49°N 100.298939°W / 49; -100.298939 in North Dakota/Manitoba
An island
[31]
[32] in a small lake on the
Rolette County , North Dakota/Manitoba border at
49°00′00″N 100°00′47″W / 49°N 100.013149°W / 49; -100.013149
An island
[33]
[34] in a small lake on the
Towner County , North Dakota/Manitoba border at
49°00′00″N 99°13′05″W / 49°N 99.218163°W / 49; -99.218163
An island
[35]
[36] in a small lake on the
Cavalier County , North Dakota/Manitoba border at
49°00′00″N 98°32′29″W / 49°N 98.541357°W / 49; -98.541357
An islet
[37] in a small reservoir (when filled) just east of the
Maida
port of entry on
North Dakota Highway 1 at
49°00′01″N 98°21′25″W / 49.000253°N 98.356943°W / 49.000253; -98.356943 , North Dakota/Manitoba
Pine and Curry Island
[38] in
Lake of the Woods on the Minnesota/Ontario border at
48°52′37″N 94°41′02″W / 48.876967°N 94.683964°W / 48.876967; -94.683964
Seaway Island in
Lake St. Clair on the Michigan/Ontario border at
42°31′25″N 82°40′39″W / 42.523639°N 82.677582°W / 42.523639; -82.677582
An island in a small lake on the border of
Maine /
New Brunswick at
46°00′18″N 67°46′52″W / 46.004988°N 67.7810°W / 46.004988; -67.7810 , southeast of
Hodgdon, Maine
Province Island in
Lake Memphremagog , between
Quebec (91%) and
Vermont (9%)
[39]
Between
Norway and Russia :
In Klistervatn: Store Grenenholmen
[40]
In Grensevatn: Korkeasaari and an unnamed islet
[41]
Between
Finland and Russia :
Between
Finland and Norway :
Island in Kivisarijärvi/Keđgisualuijävri
[54]
Island in lake SE of boundary marker 347A
[55]
Between
Sweden and Norway :
[56]
Island in Sör Vammsjön/Vammen Søndre (≈2000 m2 )
[57]
Hisön/Hisøya in Norra Kornsjön/Nordre Kornsjø (≈0,09 km2 )
[58]
Kulleholmen/Kalholmen (≈5500 m2 ) and Tagholm/Tåkeholmen (≈600 m2 ) in Södra Boksjön/Søndre Boksjø
[59]
Salholmen (≈4000 m2 ), Mosvikøya (≈0.17 km2 ) and Trollön/Trolløya (≈0.18 km2 ) in
Stora Le/Store Le
[60]
Tannsjöröset (≈50 m2 ) in Tannsjøen/Tannsjön
[61]
Linneholmene (≈2000 m2 ) in Helgesjøen/Helgesjön
[62]
Jensøya in Holmsjøen (≈0,04 km2 )
[63]
Storøya in Utgardsjøen (≈0,04 km2 )
[64]
Fallsjøholmen in Fallsjøen (Nordre Røgden) (≈4000 m2 )
[65]
Island in Kroksjøen
[66]
Island in Vonsjøen (≈9000 m2 )
[67]
Island in Skurdalssjøen/Kruehkiejaevrie
[68]
Island in a lake at altitude 710m on the Gihcijoka/Gihtsejåhkå river
[69]
Three islands in Čoarvejávri
[70]
Between
Belarus and Latvia :
Between
Lithuania and Belarus :
Between the
United Kingdom and Ireland :
Pollatawny in Lough Vearty.
[75]
Between
Argentina and
Chile :
Between
Ethiopia and
Djibouti :
The border between
Austria and
Hungary cuts across the
Neusiedler See/Fertő tó , where the water level fluctuates, sometimes exposing island flats which straddle the border.
River islands
Island (
Staustufe Apach [
de ] ) in the
Moselle River near
Schengen : mostly in
France , the tip is in the Moselle
condominium shared by
Luxembourg and
Germany
[78]
Bolshoy Ussuriyskiy (Heixiazi) at the confluence of the
Ussuri and
Amur rivers, between
China and
Russia .
[79]
Bolshoy (Abagaitu) at the
Argun River , between
China and
Russia .
[79]
An island in the
Šešupė River divided between Lithuania and the Kaliningrad Oblast of Russia [
citation needed ]
Corocoro Island in the
delta of the
Barima River : split between
Venezuela and
Guyana
[80]
San Jose Island,
Río Negro : between
Colombia and
Brazil .
[81]
The
island complex Martín García–Timoteo Domínguez is the only land border between
Argentina and
Uruguay . The
island complex Martín García–Timoteo Domínguez in the
Río de la Plata between
Argentina and
Uruguay .
[82]
The lower reaches of the
Ganges ,
[83]
Teesta ,
[84] and
Brahmaputra
[85] Rivers, approaching the
Ganges Delta , are
braided and contain numerous sand islands called chars.
[86] These can be large and inhabited but are impermanent. At any given time, several are likely to straddle the border between
India (
Assam and
West Bengal ) and
Bangladesh , though this border is not fully specified.
An island labelled 'Q' in the
Maritsa River, between
Greece and
Turkey .
[87]
An islet in the Uutuanjoki, between
Finland and
Norway , at
69°34′47″N 29°13′54″E / 69.579665°N 29.231701°E / 69.579665; 29.231701 .
An islet in the Vadet near Tunnsjø, between
Norway and
Sweden , at
64°38′40″N 13°42′38″E / 64.644443°N 13.71056°E / 64.644443; 13.71056 .
An islet on the western side of the golf course that straddles the municipalities of
Tornio in
Finland , and
Haparanda in
Sweden , at
65°51′41″N 24°07′47″E / 65.861513°N 24.129624°E / 65.861513; 24.129624 .
An islet[
vague ] in the
Euphrates River on the border of
Iraq and
Syria .[
citation needed ]
Nokiel and another unnamed islet in the
Dunajec river, between
Slovakia and
Poland , at
49°23′54″N 20°21′35″E / 49.3984°N 20.359726°E / 49.3984; 20.359726 .
[88]
Nicaragua and
Honduras share four islands along a straight-line border in the delta of the
Río Negro at the
Gulf of Fonseca .
Argentina and
Chile share an island formed by branches of the
Río Mayer .
[89]
Bolivia and
Chile share an island formed by the
Putani River [
es ] and its branch, Quebrado Coipacoipani.
[90]
Canada /
United States :
9 islands serially located in the
Clarence River on the
Alaska North Slope near
Demarcation Bay ; northernmost at
69°37′00″N 141°00′00″W / 69.616789°N 141°W / 69.616789; -141 , southernmost at
69°33′26″N 141°00′00″W / 69.557094°N 141°W / 69.557094; -141
One or more islands in
Trail Creek at
68°52′54″N 141°00′00″W / 68.881754°N 141°W / 68.881754; -141 , northeast of
Arctic Village, Alaska
An island in
Mancha Creek at
68°39′50″N 141°00′00″W / 68.663957°N 141°W / 68.663957; -141 , northeast of Arctic Village, Alaska
6 (or more) islands in bifurcated flow in the
Firth River at
68°38′30″N 141°00′00″W / 68.641781°N 141°W / 68.641781; -141 , northeast of Arctic Village, Alaska
An island in
Sunaghun Creek at
67°25′34″N 141°00′00″W / 67.426117°N 141°W / 67.426117; -141 , near its mouth at the
Porcupine River , downstream of
Old Crow, Yukon
An island in the watershed of the
Bluefish River at
66°50′17″N 141°00′00″W / 66.838155°N 141°W / 66.838155; -141 , east of
Chalkyitsik, Alaska and 15 km WWSW of
Bluefish Lake, Yukon
An island in
Fort Creek at
66°45′32″N 141°00′00″W / 66.759004°N 141°W / 66.759004; -141 , east of Chalkyitsik, Alaska
An island in the
Black River (Salmon Fork) at
66°32′37″N 141°00′00″W / 66.543661°N 141°W / 66.543661; -141 , east of Chalkyitsik, Alaska
An island in
Beaver Creek at
62°13′39″N 141°00′00″W / 62.227460°N 141°W / 62.227460; -141 , southwest of
Beaver Creek, Yukon
Two islands in
Klehini River at
59°26′53″N 136°21′55″W / 59.448142°N 136.365213°W / 59.448142; -136.365213 , near
Klukwan, Alaska
11 (or more) islands in bifurcated river flow on
Whiting River at
58°11′06″N 133°13′16″W / 58.184862°N 133.221034°W / 58.184862; -133.221034 , upstream of Gilbert Bay, which empties into
Stephens Passage
Two islands in
Stikine River at
56°39′31″N 131°50′55″W / 56.658546°N 131.848698°W / 56.658546; -131.848698 , downstream of
Great Glacier , Yukon
An island in
Columbia River at
Waneta border crossing at
49°00′03″N 117°38′01″W / 49.000766°N 117.6335648°W / 49.000766; -117.6335648 in
Washington /
British Columbia
An island in
Belly River at
49°00′00″N 113°41′00″W / 49°N 113.683294°W / 49; -113.683294 in
Montana /
Alberta
An island in a branch of
Lee Creek at
49°00′00″N 113°36′03″W / 49°N 113.600862°W / 49; -113.600862 in Montana/Alberta
An islet in
Boundary Creek at
49°00′00″N 113°21′26″W / 49°N 113.357300°W / 49; -113.357300 in Montana/Alberta
An island in
St. Mary River
49°00′00″N 113°19′34″W / 49°N 113.326222°W / 49; -113.326222 in Montana/Alberta
An islet in
Milk River at
48°59′55″N 112°33′20″W / 48.998739°N 112.555541°W / 48.998739; -112.555541 in Montana/Alberta
An island in
Mundell Creek at
49°00′00″N 109°05′21″W / 49°N 109.089222°W / 49; -109.089222 in Montana/
Saskatchewan
An island in
McEachern Creek at
49°00′00″N 106°56′19″W / 49°N 106.938504°W / 49; -106.938504 in Montana/Saskatchewan
An island
[91] in the
Pembina River at
49°00′01″N 98°12′22″W / 49.000288°N 98.206118°W / 49.000288; -98.206118 in North Dakota/Manitoba
An island in tributary of
Northwest Branch Saint John River at
46°41′13″N 69°59′56″W / 46.687062°N 69.998996°W / 46.687062; -69.998996 in
Maine /
Quebec
Two islands on the Maine/New Brunswick border southeast of
Monticello, Maine (
46°16′22″N 67°46′55″W / 46.272890°N 67.782°W / 46.272890; -67.782 and
46°16′20″N 67°46′55″W / 46.272293°N 67.782°W / 46.272293; -67.782 ) that are formed by the forks of a stream that rises from Gentle Lake in Maine, then flows into the North Branch–Meduxnekeag River.
Historically divided islands
Other islands have been divided by international borders in the past but they are now unified.
The definite borders of modern
nation states do not apply in other forms of societal organisation, where "divided" islands may consequently be less noteworthy. For example, in
Ancient Greece , the island of
Euboea was divided among several
city-states , including
Chalcis and
Eretria ; and before its settlement by
Europeans , the Island of
Tasmania was divided among nine
indigenous tribes .
Islands in wartime may be divided between an invading and defending power, as with
Crete in 1645–1669 between the
Ottoman Empire and the
Republic of Venice .
Examples of formerly divided islands include:
Boundary Islet – divided between the colonies of Victoria (part of New South Wales until 1851) and Tasmania (known as Van Diemen's Land until 1856); remained separated between two Australian states
Corsica – was divided between the
Republic of Pisa and the
Republic of Genoa by a ruling by
Pope Innocent II in 1132, and it remained so until the
Battle of Meloria of 1284 . Subsequently Corsica became part of Genoa,
Aragon , Genoa again, the
Corsican Republic ,
France ,
Anglo-Corsican Kingdom , and finally
France again.
Sardinia – was divided into indigenous
giudicati since before the year 900 through the extinction of the
Giudicato of Arborea in 1420. Since then, Sardinia has successively been a part of
Aragon , the
Spanish Empire ,
Piedmont–Sardinia , the
Kingdom of Italy , and the
Republic of Italy .
Saaremaa (1237–1570) and
Hiiumaa (1254–1563) – Divided between the
Livonian Order and the
Bishopric of Ösel-Wiek (the
Kingdom of Denmark after 1560). Thereafter these were part of Denmark (Saaremaa only), the
Kingdom of Sweden ,
Imperial Russia ,
Estonia , the
Soviet Union ,
Nazi Germany (1941–1944), the Soviet Union again, and finally Estonia after the dissolution of the Soviet Union in 1991.
Piirissaar in
Lake Peipus – literally "Border Island" in Estonian, it was first divided in the 13th or 14th century and remained divided between the
Bishopric of Dorpat and the later
Polish Livonia and
Swedish Livonia on one side and the
Novgorod Republic and the later
Principality of Pskov ,
Pskov Republic and the
Tsardom of Russia on the other side until the annexation of Swedish Livonia into Russia in 1721.
Saint Croix – Dutch, English and French colonists in different settlements from the early 17th century until 1645.
[92]
Tobago – from 1654 through 1659, this island had colonies from both the
Duchy of Courland and Semigallia and the
Dutch Republic . Both of these colonies failed economically and were abandoned.
[93] Later, Tobago became part of the
French Empire , then the
Kingdom of Great Britain (1706), the
United Kingdom of Great Britain and Ireland , the present
United Kingdom , and the independent country of
Trinidad and Tobago .
Ternate – divided between the
Spanish Empire allied with
Tidore , and the
Dutch Republic allied with the Sultan of Ternate from 1607 through 1663. Later, Ternate has successive been owned by the
Netherlands , the
Japanese Empire (1942–1945), Netherlands again, and the independent country of
Indonesia , beginning in 1949.
Long Island, New York – divided between the Dutch Republic and the
Kingdom of England beginning in 1640 (
de facto , by the founding of the
Southold ), or in 1650 (
de jure , by the
Treaty of Hartford ), through to the surrender of
New Netherland to the
British Army in 1664. Thereafter, Long Island has been owned by Kingdom of England, the
Kingdom of Great Britain , and the
United States from 1781 through the present. Long Island has been part of the
State of New York since 1781, and it is the largest island in the
Contiguous United States (48 states).
Great Britain – Earlier divided into three or more kingdoms, including
England ,
Wales , and
Scotland , and sometimes ruled in part by the
Roman Empire and the
Danish Empire . These parts were reduced to just two before 1707, when the
Kingdom of England and the
Kingdom of Scotland enacted the
Acts of Union of 1707 , establishing just one
monarchy and one
parliament . Since 1707, England, Scotland, and Wales have been part of (successively) the
Kingdom of Great Britain , the
United Kingdom of Great Britain and Ireland , and the
United Kingdom of Great Britain and Northern Ireland , often called the
United Kingdom for short.
Sri Lanka – In the 1000s, the island was ruled in part by the
Chola Empire , the
Tamil Kingdoms in the North, and the
Sinhalese Kingdoms in the south. The island was later divided into three or more kingdoms, including the
Jaffna Kingdom , the
Vanni Nadu , the
Kingdom of Kandy , and the
Kingdom of Kotte . After waves of
Portuguese ,
Dutch and
British colonization, the island was united as a single entity under the British. The country then known as Ceylon attained independence in 1948, and in 1972, the current
Democratic Socialist Republic of Sri Lanka was established.
Newfoundland Island – Earlier divided between Great Britain and the French Empire until the enactment of the
Treaty of Utrecht in 1713. Following this treaty, Newfoundland was part of the
British Empire . Then it became the partially independent
Dominion of Newfoundland , which next became a
Province of Canada in 1949.
Saint Kitts – Divided between
Great Britain and the French Empire in 1628. "The island fell to the French in April 1666, but by the Treaty of Utrecht, April 11, 1713, it was yielded entirely to the British crown."
[94] Then it became part of the British Empire for about 250 years, and finally part of the independent country of
Saint Kitts and Nevis . At various times of war in the
Caribbean Sea , either France or Great Britain occupied all of Saint Kitts both before and after 1713.
Elba – divided from 1548 through 1802.
Portoferraio belonged to the
Duke of Florence (later the
Grand Duchy of Tuscany ) from 1548 until this was ceded to France in 1802 under the
Treaty of Amiens .
Porto Longone belonged to the
State of Presidi , a client of first the
Spanish Empire and then the
Kingdom of Naples , from 1557 until ceded to France in 1801 by the
Treaty of Florence . The rest of this island belonged to the
Principality of Piombino until conquered by the
French Empire , and then in 1802
Napoleon made Elba into the
Kingdom of Etruria . This island was successively part of the French Empire, the Principality of Piombino under
Elisa Baciocchi ,
under the sovereignty of Napoleon by the terms of the
Treaty of Fontainebleau (1814) , part of
Tuscany again, part of the
Kingdom of Italy ,
Italian Social Republic (1943–44), and finally a part of the
Republic of Italy .
[95]
[96]
Efate – Divided for several months during 1889 between
Franceville and the
New Hebrides , then under an Anglo-French joint naval commission.
Sakhalin Island – Divided between the
Russian Empire , then the
Soviet Union , and the
Japanese Empire along the
50th parallel north by the terms of the
Treaty of Portsmouth of 1905 through the
final Surrender of the Japanese Empire in 1945. Henceforth, all of Sakhalin became part of the Soviet Union, and then the
Russian Federation , de facto . The Japanese Empire still considers the ownership of Sakhalin to be undetermined , and Sakhalin is shown on many Japanese maps as a "
no man's land ".
Killiniq Island – divided between
Canada and the
Colony of Newfoundland and then the
Dominion of Newfoundland beginning with the
cession of the Rupert's Land to the Dominion of Canada in 1870 as the
North-West Territories and the province of
Manitoba through 1949 with the
confederation of Newfoundland as a Canadian province .
Ankoko Island in the
Cuyuni River on the border between
Venezuela and
British Guiana (now
Guyana ).
Zhongshan Island in the
Pearl River Delta was divided between the
People's Repulic of China and
Portuguese Macau before the
handover of Macao to China in 1999.
Frijoles Island within
Gatun Lake in the former
Panama Canal Zone was split between the United States and Panama on 1 October 1979, the date that the 1977
Panama Canal Treaty took effect. Much of the former Canal Zone area was transferred to Panama on that day. The Panama Railroad served as the new border in an area where it crosses Gatun Lake via a causeway, with the railroad bisecting Frijoles Island. The entire island transferred to exclusive Panamanian jurisdiction on 31 December 1999.
[97]
[98]
The small middle island of Las Tres Hermanas ("The Three Sisters") off the Pacific coast of Panama City was split between the U.S.
Panama Canal Zone and Panama by the
Taft Agreement on 12 December 1904. The entire island was placed in the Canal Zone on 11 February 1915. Today the
Cinta Costera lies on top of it.
Popes Folly Island in
Passamaquoddy Bay between the United States (Maine) and Canada (New Brunswick) had been divided prior to the 1908 border treaty between the U.S. and Great Britain.
[99]
[100]
Taiwan , historically known as Formosa and Tywan, was in the 17th century colonised by
the Dutch and
the Spaniards , along with the indigenous
Kingdom of Middag .
A few former islands have disappeared because of changes in water levels:
Subnationally divided islands
There are islands that lie across different provinces or states of the same country.
Killiniq Island of Canada, which is divided between
Newfoundland and Labrador and
Nunavut , whereas
Melville Island and
Victoria Island are divided between Nunavut and the
Northwest Territories . In Australia, the
Boundary Islet is divided between
Tasmania and
Victoria .
Smith Island in
Chesapeake Bay and
Assateague Island , a
barrier island on the Atlantic coast of the
United States , are divided between the states of
Maryland and
Virginia .
Ellis Island contains a true exclave of the state of
New York , which is largely the area of the original natural island, while all land reclamation extensions from 1890-1935 are in
New Jersey . The states also share
Shooters Island in
Newark Bay . Owing only to accretion of silt, an island has arisen spontaneously in the
Mississippi River at the location of the boundary trijunction of
Arkansas ,
Louisiana , and
Mississippi , and is thus divided among the three states.
Pag , in
Croatia , is divided between
Zadar County and
Lika-Senj County .
Ishima, in
Japan , is divided between
Kagawa Prefecture in the South and
Okayama Prefecture in the north.
Chek Lap Kok in Hong Kong is divided between
Islands and
Tuen Mun districts, and Lantau is divided between Islands and Tsuen Wan districts.
See also
References
^
New Guinea is the second most extensive sea island and the highest sea island with the summit of
Puncak Jaya at 4,884 metres (16,024 ft).
^
a
b
c
d
e
f
g
h
"Islands by land area" .
UN system-wide Earthwatch .
United Nations Environment Programme . 1998-02-18. Archived from
the original on 2018-02-20. Retrieved 2009-09-27 .
^
Borneo is the third most extensive sea island and the third highest sea island with the summit of
Mount Kinabalu at 4,095 metres (13,435 ft).
^ Nolan, William.
"Geography of Ireland" .
Government of Ireland . Archived from
the original on 24 November 2009. Retrieved 11 November 2009 .
^
Lago Enriquillo on
Hispaniola is the lowest point on any sea island at -46 metres (151 ft).
^
Central America and Caribbean: Haiti, CIA World Factbook
^
Central America and Caribbean: Dominican Republic, CIA World Factbook
^ The tip of
Cape Muzon was established as the "point of commencement" of the international boundary with Alaska in the
Anglo-Russian Convention of 1825 . A Court of Arbitration in 1903 ruled that Point "A" (
54°39′43.993″N 132°41′3.093″W / 54.66222028°N 132.68419250°W / 54.66222028; -132.68419250 ) was the initial point of this boundary. Canada has accepted this as a demarcated boundary; however, the U.S. disputes that Point "A" is a boundary point.
^ Davidson, George (1903).
The Alaska Boundary . San Francisco: Alaska Packers Association. pp.
79 –81, 129–134, 177–179, 229.
^
"International Boundary Commission definition of the Canada/US boundary in the NAD83 CSRS reference frame" . Archived from
the original on 2011-07-26. Retrieved 2015-03-21 .
^ White, James (1914).
Boundary Disputes and Treaties . Toronto: Glasgow, Brook & Company. pp.
936 –958.
^ Gray, David H. (Autumn 1997).
"Canada's Unresolved Maritime Boundaries" (PDF) . IBRU Boundary and Security Bulletin . p. 61. Retrieved 2015-03-21 .
^ Margedant, Udo; Thomas Ellerbeck (1991). Politische Landeskunde Mecklenburg-Vorpommern (in German). Mecklenburg-Vorpommern: Landeszentrale für politische Bildung. p. 89.
^
Map of Inakari, the Finnish part of Kataja
65°41′59″N 24°10′08″E / 65.699644°N 24.168781°E / 65.699644; 24.168781
^
Passport Island is an artificial island approximately in the middle of the
King Fahd Causeway .
^
Nova Zemlia Island or
K Island is a barrier island formed in Danube River Delta in 1988.
^ Giosan, Liviu; Donenelly, Jeffrey P.; Vespremeanu, Emil; Bhattacharya, Janok P.; Olariu, Cornel; Buonaiuto, Frank S. (2005).
"River Delta Morphodynamics: Examples from the Danube Delta" (PDF) . River Deltas—Concepts, Models, and Examples (Special Publication No. 83) . Society for Sedimentary Geology: 403–405.
ISBN
1-56576-113-8 .
^
Map of Koiluoto
60°30′21″N 27°46′21″E / 60.50575°N 27.772472°E / 60.50575; 27.772472
^
Map of Vanhasaari
60°28′19″N 27°46′01″E / 60.472069°N 27.766914°E / 60.472069; 27.766914
^
Map of Vanhasaari/Maly Pogranichny
^
Map of Jähi
60°19′31″N 27°36′58″E / 60.325211°N 27.616037°E / 60.325211; 27.616037
^
Map of divided island southeast of Peräluoto
60°32′09″N 27°46′41″E / 60.535716°N 27.778154°E / 60.535716; 27.778154
^ Retrieved 19 June 2013
Bing Maps
^ Retrieved 19 June 2013
North Dakota Hub Explorer
Archived 2013-05-08 at the
Wayback Machine
^ Retrieved 19 June 2013
Bing Maps
^ Retrieved 19 June 2013
North Dakota Hub Explorer
Archived 2013-05-08 at the
Wayback Machine
^ Retrieved 19 June 2013
Bing Maps
^ Retrieved 19 June 2013
North Dakota Hub Explorer
Archived 2013-05-08 at the
Wayback Machine
^ Retrieved 19 June 2013
Bing Maps
^ Retrieved 19 June 2013
North Dakota Hub Explorer
Archived 2013-05-08 at the
Wayback Machine
^ Retrieved 19 June 2013
Bing Maps
^ Retrieved 19 June 2013
North Dakota Hub Explorer
Archived 2013-05-08 at the
Wayback Machine
^ Retrieved 19 June 2013
Bing Maps
^ Retrieved 19 June 2013
North Dakota Hub Explorer
Archived 2013-05-08 at the
Wayback Machine
^ Retrieved 19 June 2013
Bing Maps
^ Retrieved 19 June 2013
North Dakota Hub Explorer
Archived 2013-05-08 at the
Wayback Machine
^ Retrieved 19 June 2013
North Dakota Hub Explorer
Archived 2013-05-08 at the
Wayback Machine
^
"Pine and Curry Island SNA" . Minnesota Department of Natural Resources . Retrieved 2021-04-27 .
^ Jacques Boisvert.
"Province Island" . Retrieved 2006-11-04 . It is the largest island in Lake Memphremagog, being 77 acres, of which 7 acres, are in the United States.
^
"Norway-Russia Boundary Map: Boundary markers 167–177: Sandneset-Klistervatn" (in Norwegian and Russian). Norwegian Boundary Commission for the Norway-Russia border. Archived from
the original on 2007-08-14. Retrieved 2007-09-25 . — boundary markers #169–172
^
"Norway-Russia Boundary Map: Boundary markers 7–14: Grenseberg-Ødevasselva" (in Norwegian and Russian). Norwegian Boundary Commission for the Norway-Russia border. Archived from
the original on 2007-08-14. Retrieved 2007-09-25 . — boundary markers #12–13 (Korkeasaari) & #14 (unnamed islet)
^
Portion of Nuijamaanjärvi with Äikkäänniemi marked from Citizen's Mapsite of Finland.
^
Portion of Yla-Tirja with divided islands at markers 93 (Suursaari) and 94 (smaller island) from Citizen's Mapsite of Finland.
^
Portion of Melaselänjärvi showing Tarraassiinsaari and Härkäsaari from Citizen's Mapsite of Finland.
^
Portion of Melaselänjärvi showing Kiteensaari from Citizen's Mapsite of Finland.
^
Portion of Kokkojärvi showing Rajasaari from Citizen's Mapsite of Finland.
^
Portion of Vuokkijärvi showing Kalmasaari from Citizen's Mapsite of Finland.
^
Portion of Hietajärvi showing Varposaari from Citizen's Mapsite of Finland.
^
Portion of Parvajärvi showing Parvajärvensaari from Citizen's Mapsite of Finland.
^ Office of the Geographer,
Bureau of Intelligence and Research (1967-02-01).
International Boundary Study No. 74: Finland–U.S.S.R. boundary (PDF) .
United States Department of State . p. 21. Archived from
the original (PDF) on 2006-09-16. Hence the frontier runs...to a point on a small unnamed island in Lake Pukarinjarvi between the cape west of the village of Laitela and the Niittysaaryi island.
^
Portion of Pukarijärvi with Keuhkosaari marked from Citizen's Mapsite of Finland.
^ International Boundary Study No. 74, page 22. ""The frontier follows the creek down to Lake Onkamojarvi, intersects the small island of Siiheojansuusaai and proceeds in a straight line to the small island of Tossensaari."
^
Portion of Onkamojärvi from Citizen's Mapsite of Finland (Siiheojansuusaari is IV/179; Tossonsaari is IV/180)
^
Portion of Kivisarijärvi with divided island marked from Citizen's Mapsite of Finland.
69°44′09″N 28°52′56″E / 69.735926°N 28.88235°E / 69.735926; 28.88235
^
Neighborhood of boundary marker 347A, with divided island marked from Citizen's Mapsite of Finland.
69°53′N 28°18′E / 69.89°N 28.3°E / 69.89; 28.3
^ Verified at
Norwegian state cartographic agency website (in English, Norwegian, and Northern Sami)
^
58°53′18″N 11°27′27″E / 58.88843°N 11.45739°E / 58.88843; 11.45739
^ Hisøya:
58°54′22.8″N 11°39′7.1″E / 58.906333°N 11.651972°E / 58.906333; 11.651972
^ Søndre Boksjø:
59°02′N 11°42′E / 59.03°N 11.7°E / 59.03; 11.7
^ Salholmen:
59°14′15.96″N 11°49′32.24″E / 59.2377667°N 11.8256222°E / 59.2377667; 11.8256222 ; Mosvikøya
59°15′55″N 11°49′32″E / 59.26528°N 11.82556°E / 59.26528; 11.82556 ; Trollön :
59°15′17.76406″N 11°49′13.45279″E / 59.2549344611°N 11.8204035528°E / 59.2549344611; 11.8204035528
^ Tannsjøen Island ("Nr 54" on Norwegian map):
59°52′21.67″N 11°54′59.31″E / 59.8726861°N 11.9164750°E / 59.8726861; 11.9164750
^ Linneholmene:
59°53′20.98″N 12°1′59.96″E / 59.8891611°N 12.0333222°E / 59.8891611; 12.0333222
^ Jensøya:
59°53′35.77″N 12°6′47.88″E / 59.8932694°N 12.1133000°E / 59.8932694; 12.1133000
^ Storøya:
60°0′55.9″N 12°23′42.5″E / 60.015528°N 12.395139°E / 60.015528; 12.395139
^ Fallsjøholmen:
60°33′2.9″N 12°34′54.76″E / 60.550806°N 12.5818778°E / 60.550806; 12.5818778
^ Kroksjøen's island:
60°44′02″N 12°23′43″E / 60.733895°N 12.395381°E / 60.733895; 12.395381
^ Vonsjøen's island:
62°15′38″N 12°17′46″E / 62.260625°N 12.296161°E / 62.260625; 12.296161
^ Skurdalssjøen's island:
63°21′28″N 12°05′10″E / 63.357646°N 12.085973°E / 63.357646; 12.085973
^ Gihcijoka island:
67°39′55″N 16°34′11″E / 67.665396°N 16.569616°E / 67.665396; 16.569616
^ Čoarvejávri's islands: largest:
68°01′46″N 17°57′48″E / 68.029364°N 17.963228°E / 68.029364; 17.963228 ; middle:
68°01′35″N 17°57′43″E / 68.0262611°N 17.9620527°E / 68.0262611; 17.9620527 ; southern:
68°01′29″N 17°57′37″E / 68.0247914°N 17.9604023°E / 68.0247914; 17.9604023
^ Krogh, Jan S.
"Lake Druksiai" . Retrieved 2006-12-10 . The international border is marked on the map.
^
"World Lakes Database: LAKE DRUKSIAI" . International lakes environment committee. Archived from
the original on 2007-03-12. Retrieved 2006-12-10 . Number of main islands (name and area): Zamok (0.26 km2 ), Sosnovec (0.048 km2 ), Utovec (0.0088 km2 ) and 5 nameless islands.
^
"Bathymetric map of Lake Drūkšiai" . International lakes environment committee. Archived from
the original (
GIF ) on 8 January 2006. Retrieved 2006-12-10 . Sosnovec is named on this map.
^ Coordinates of Lake Drūkšiai:
55°37′N 26°38′E / 55.617°N 26.633°E / 55.617; 26.633
^ Verified against
Ordnance Survey of Ireland 6-inch map of the
townland of Tober,
County Donegal ; surveyed 1905-05-05. Coordinates:
54°32′39″N 8°00′30″W / 54.5441°N 8.0084°W / 54.5441; -8.0084
Irish national grid reference system :
G996663
Archived 2013-11-09 at the
Wayback Machine
^
"Visor cartográfico de Chile" . Retrieved 2020-07-07 .
^ Office of the Geographer,
Bureau of Intelligence and Research (1976-02-20).
International Boundary Study No. No. 154 – Djibouti – Ethiopia Boundary (PDF) .
United States Department of State . p. 8. Archived from
the original (PDF) on 2013-11-09. From Monument No. 53 on the south bank of Lake Abbe, the border crosses the lake from south to north continuing in a straight line for 30 kilometers. It cuts across the islet of hill 255 off Cape Aleilou.
^
"Map of Commune of Schengen" (PDF) . Commune of Schengen. Archived from
the original (PDF) on 2007-06-15. Retrieved 2006-12-10 . . Coordinates:
49°28′08″N 6°22′05″E / 49.46894°N 6.36812°E / 49.46894; 6.36812
^
a
b
Дополнительное соглашение между Российской Федерацией и Китайской Народной Республикой о российско-китайской государственной границе на ее Восточной части
Archived 2011-08-12 at the
Wayback Machine от 14 октября 2004 года.
^ The northern shore of Corocoro is on the open ocean, but it is not truly a sea island as the southern boundary is a
freshwater channel. The island is claimed in its entirety by Venezuela.
8°31′01″N 60°04′59″W / 8.517°N 60.083°W / 8.517; -60.083
^ Office of the Geographer,
Bureau of Intelligence and Research (1985-04-15).
International Boundary Study No. 174: Brazil – Colombia boundary (PDF) .
United States Department of State . p. 8. Archived from
the original (PDF) on 2006-09-16. The final report allocated all river islands on the basis of the
thalweg with the exception of San Jose Island on the Rio Negro which was split between Brazil (southern half) and Colombia. Co-ordinates:
1°13′42″N 66°51′17″W / 1.228401°N 66.854811°W / 1.228401; -66.854811
^
Barros, Vicente (Coordinator) Impact Of Global Change On The Coastal Areas Of The Rio De La Plata: Sea Level Rise And Meteorological Effects. Page 7 [
permanent dead link ]
^ See
map of
Nawabganj District ,
map of
Rajshahi District , and
map of Daulatpur upazila of
Kushtia District , all in Bangladesh.
^ See
map of Dilma upazila in
Nilphamari District , Bangladesh.
^ See
map of
Kurigram district, Bangladesh.
^ Chowdhury, Sifatul Quader; Chowdhury, Masud Hasan (2012).
"Char" . In
Islam, Sirajul ; Jamal, Ahmed A. (eds.). Banglapedia: National Encyclopedia of Bangladesh (Second ed.).
Asiatic Society of Bangladesh .
^ Office of the Geographer,
Bureau of Intelligence and Research (1964-11-23).
International Boundary Study No. 41: Greece – Turkey boundary (PDF) .
United States Department of State . p. 7. Archived from
the original (PDF) on 2009-03-16. Returning to the median of the Maritsa, [...] the boundary continues [...] to boundary marker No. 24 on the northern end of an island designated "Q". Thence, the boundary line extends a distance of 800.5 feet to marker No. 25 near the center, thence a distance of 1,804 feet to marker No. 26 on the southwestern extremity of island "Q".
^
"Zmluva medzi Poľskou republikou a Slovenskou republikou o zmenách priebehu štátnej hranice a schválení hraničnej dokumentácie (AGREEMENT between the Polish Republic and the Slovak Republic on changes of the boundary line and the approval of border documentation, drawn up in the Old Ľubovňa on 29 July 2002.)" .
Dziennik Ustaw (in Slovak) (203). Prime Minister of Poland: 1686. 2005. Archived from
the original on 2013-11-09. Retrieved 28 May 2013 .
^
"Visor cartográfico de Chile" . Retrieved 2020-07-07 .
^
"Visor cartográfico de Chile" . Retrieved 2020-07-07 .
^
"NDGIS North Dakota Hub Explorer" . Archived from
the original on 8 May 2013. Retrieved 19 June 2013 .
^ Dookhan, Isaac (1994).
A History of the Virgin Islands of the United States . Kingston, Jamaica: Canoe Press.
ISBN
9789768125057 . , pp. 40-49
^
Ramerini, Marco.
"Dutch and Courlanders in Tobago: A history of the first settlements, 1628–1677" . Archived from
the original on 2007-09-28. Retrieved 2007-10-01 .
^ Ireland, Gordon (1941). Boundaries, possessions, and conflicts in Central and North America and the Caribbean . New York: Octagon Books. p. 344.
^ Wolff, Sir Henry Drummond (1855).
The island empire, or, Scenes of the first exile of the Emperor Napoleon I: together with a narrative of his residence on the island of Elba, taken from local information, the papers of the British resident, and other authentic sources . Bosworth. pp.
304 –322. Retrieved 27 August 2011 .
^ Frey, Linda; Frey, Marsha (1995).
The treaties of the War of the Spanish Succession: an historical and critical dictionary . Greenwood Publishing Group. pp. 421–2.
ISBN
978-0-313-27884-6 . Retrieved 27 August 2011 .
^ United States. Central Intelligence Agency. (1987).
"Land and waters of the Panama Canal Treaty (map)" . Washington, D.C. Archived from
the original on 2016-03-04. Retrieved 2015-07-15 .
^
"Carte IV. Aires de terre et d'eau mises à disposition du fonctionnement et de la défense du canal de Panama par le traité relatif au canal de Panama du 7 septembre 1977" . Dirección ejecutiva para los asuntos del tratado (DEPAT) . Ciudad de Panama. 1981. Retrieved 2015-07-11 .
^ A treaty between Great Britain and the United States providing for the more complete definition and demarcation of the international boundary between the Dominion of Canada and the United States . 1908. pp. 1–3.
hdl :
2027/hvd.32044086241809 .
^
"Eastport Quadrant 15x15 grid map" . United States Geological Survey. 1907. Archived from
the original on 2017-08-03. Retrieved 2016-02-07 . (download)
^ Office of the Geographer (June 1969).
"Chad-Nigeria boundary" .
United States Department of State . Archived from
the original (
JPEG ) on 2007-06-15. Retrieved 2006-12-06 .
External links