Halden havn med Iddefjorden sett fra Fredriksten

Iddefjord ( en, Idd Fjord or Idde Fjord; no, Iddefjorden); sv, Idefjorden) is a classic

fjord In physical geography, a fjord or fiord () is a long, narrow inlet with steep sides or cliffs, created by a glacier. Fjords exist on the coasts of Alaska, Antarctica, British Columbia, Chile, Denmark, Germany, Greenland, the Faroe Islands, Icel ...

with a narrow watercourse and steep natural formations on both sides. It runs along the Norwegian-Swedish border from the Singlefjord ( en, Single Fjord).''A Brief Geographical and Hydro Graphical Study of Bays and Estuaries the Coasts of which Belong to Different States''. 2009. Geneva: United Nations, p. 218. The Iddefjord separates the province of

Bohuslän Bohuslän (; da, Bohuslen; no, Båhuslen) is a Swedish province in Götaland, on the northernmost part of the country's west coast. It is bordered by Dalsland to the northeast, Västergötland to the southeast, the Skagerrak arm of the North ...

in the county of Västra Götaland in

Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic countries, Nordic c ...

from the municipality of

Halden Halden (), between 1665 and 1928 known as Fredrikshald, is both a town and a municipality in Viken county, Norway. The municipality borders Sarpsborg to the northwest, Rakkestad to the north and Aremark to the east, as well as the Swedish ...

in the county of

Østfold Østfold is a traditional region, a former county and a current electoral district in southeastern Norway. It borders Akershus and southwestern Sweden ( Västra Götaland County and Värmland), while Buskerud and Vestfold are on the other s ...

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country in Northern Europe, the mainland territory of which comprises the western and northernmost portion of the Scandinavian Peninsula. The remote Arctic island of ...

. It opens to the

Skagerrak The Skagerrak (, , ) is a strait running between the Jutland peninsula of Denmark, the southeast coast of Norway and the west coast of Sweden, connecting the North Sea and the Kattegat sea area through the Danish Straits to the Baltic Sea. T ...

via the

Svinesund Svinesund is a sound separating the Swedish municipality of Strömstad in the province of Bohuslän in the county of Västra Götaland from the Norwegian municipality of Halden in the county of Viken. Two bridges, the old and new Svinesund ...

and

Hvaler Hvaler is a municipality that is a group of islands in the southern part of Viken County, Norway. The administrative centre of the municipality is the village of Skjærhalden, on the island of Kirkeøy. The only police station in the municip ...

archipelago An archipelago ( ), sometimes called an island group or island chain, is a chain, cluster, or collection of islands, or sometimes a sea containing a small number of scattered islands. Examples of archipelagos include: the Indonesian Arch ...

(a cluster of classic skerries). The outermost stretch is called the Ringdalsfjord ( en, Ringdals Fjord),Hyde, Robert. 1979. The Sparks Flew in Sweden. ''Cruising World'' (January): 92–93. but from the point where it makes a sharp bend and further south, it is called the Iddefjord. Like several other fjords, it was named after a part of its coast, in this case the parish of

Idd Idd is a parish and former municipality in Halden, Østfold county, Norway. The parish of ''Id'' was established as a municipality January 1, 1838 (see formannskapsdistrikt). The rural municipality was (together with Berg) merged with the ci ...

References

Fjords of Viken Halden Fjords of Sweden Norway–Sweden border International fjords Landforms of Västra Götaland County {{Norway-fjord-stub