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Aare
Aar
Aare; Aar
	The Aare at Bern
	Drainage basin of the Aare
	Mouth
Location
Country	Switzerland
Cantons	Bern, Solothurn, Aargau
Settlements	Meiringen (BE), Interlaken (BE), Thun (BE), Münsingen, Muri bei Bern, Bern, Bremgarten bei Bern, Aarberg (BE), Büren a.A. (BE), Solothurn (SO), Aarwangen (BE), Aarburg (BE), Olten (SO), Niedergösgen (SO), Schönenwerd (SO), Aarau (AG), Wildegg (AG), Brugg (AG), Windisch (AG), Döttingen (AG), Klingnau (AG)
Physical characteristics
Source
• location	Unteraar Glacier, Bernese Oberland
• coordinates	46°34′07″N 8°11′16″E / 46.56858°N 8.18774°E
• elevation	1,940 m (6,360 ft)
Mouth
• location	Rhine below Koblenz, Switzerland
• coordinates	47°36′21″N 8°13′24″E / 47.6057°N 8.2234°E
• elevation	311 m (1,020 ft)
Length	291.5 kilometres (181.1 mi)
Basin size	17,779 km2 (6,865 sq mi)
Discharge
• location	Untersiggenthal
• average	559 m3/s (19,700 cu ft/s) (MQ 1935-2013)
• minimum	351 m3/s (12,400 cu ft/s) (MNQ 1935-2013),; 138 m3/s (4,900 cu ft/s) (NNQ, 1963)
• maximum	735 m3/s (26,000 cu ft/s) (MHQ 1935-2013),; 2,656 m3/s (93,800 cu ft/s) (HHQ, 2007)
Basin features
Progression	Rhine→ North Sea
Tributaries
• left	Lütschine (Lake Brienz), Kander (Lake Thun), Gürbe, Saane/La Sarine, Zihl/La Thielle (Lakes of Neuchatel and Bienne), La Suze (Lake of Bienne), Dünnern
• right	Gadmerwasser, Zulg, Emme, Murg, Wigger, Suhre, Aabach, Reuss, Limmat, Surb
Waterbodies	Oberaarsee, Grimselsee, Räterichsbodensee, Lake Brienz, Lake Thun, Wohlensee, Lake Biel, Stausee Niederried, Klingnauer Stausee

The Aare (Swiss Standard German: [ˈaːrɛ] ^ⓘ) or Aar (Swiss Standard German: [aːr] ^ⓘ) is the main tributary of the High Rhine (its discharge even exceeds that of the latter at their confluence)^[2] and the longest river that both rises and ends entirely within Switzerland.^[3]^[4]

Its total length from its source to its junction with the Rhine comprises about 295 kilometres (183 mi),^[3]^[5] during which distance it descends 1,565 m (5,135 ft), draining an area of 17,779 km² (6,865 sq mi), almost entirely within Switzerland, and accounting for close to half the area of the country, including all of Central Switzerland.^[5]

There are more than 40 hydroelectric plants along the course of the Aare.^[6]

The river's name dates to at least the La Tène period, and it is attested as Nantaror "Aare valley" in the Berne zinc tablet.

The name was Latinized as Arula/Arola/Araris.^[7]^{[nb 1]}

Course

The Aare rises in the great Aargletschers (Aare Glaciers) of the Bernese Alps, in the canton of Bern and west of the Grimsel Pass.^[3] The Finsteraargletscher and Lauteraargletscher come together to form the Unteraargletscher (Lower Aar Glacier), which is the main source of water for the Grimselsee (Lake of Grimsel).^[4]^[6] The Oberaargletscher (Upper Aar Glacier) feeds the Oberaarsee, which also flows into the Grimselsee.^[4] The Aare leaves the Grimselsee just to the east to the Grimsel Hospiz, below the Grimsel Pass, and then flows northwest through the Haslital, forming on the way the magnificent Handegg Waterfall, 46 m (151 ft), past Guttannen.

Right after Innertkirchen it is joined by its first major tributary, the Gamderwasser. Less than 1 kilometre (0.62 mi) later the river carves through a limestone ridge in the Aare Gorge (German: Aareschlucht).^[3] It is here that the Aare proves itself to be more than just a river, as it attracts thousands of tourists annually to the causeways through the gorge.^[4] A little past Meiringen, near Brienz, the river expands into Lake Brienz. Near the west end of the lake it indirectly receives its first important tributary, the Lütschine, by the Lake of Brienz. It then runs across the swampy plain of the Bödeli (Swiss German diminutive for ground) between Interlaken and Unterseen before flowing into Lake Thun.^[3]

Near the west end of Lake Thun, the river indirectly receives the waters of the Kander, which has just been joined by the Simme, by the Lake of Thun. Lake Thun marks the head of navigation.^[6] On flowing out of the lake it passes through Thun, and then flows through the city of Bern, passing beneath eighteen bridges and around the steeply-flanked peninsula on which the Old City is located. To the south of the Old City peninsula is the Mattenschwelle [de], a weir which provides water for the small Matte hydroelectric power plant. River swimming in the Aare is popular in Bern, and the river is sometimes full of bathers on summer days. The river soon changes its northwesterly flow for a due westerly direction, but after receiving the Saane or La Sarine it turns north until it nears Aarberg. There, in one of the major Swiss engineering feats of the 19th century, the Jura water correction, the river, which had previously rendered the countryside north of Bern a swampland through frequent flooding, was diverted by the Aare-Hagneck Canal into the Lac de Bienne. From the upper end of the lake, at Nidau, the river issues through the Nidau-Büren Canal, also called the Aare Canal,^[4] and then runs east to Büren. The lake absorbs huge amounts of eroded gravel and snowmelt that the river brings from the Alps, and the former swamps have become fruitful plains: they are known as the "vegetable garden of Switzerland".

From here the Aare flows northeast for a long distance, past the ambassador town Solothurn^[3] (below which the Grosse Emme flows in on the right), Aarburg (where it is joined by the Wigger), Olten, Aarau,^[3] near which is the junction with the Suhre, and Wildegg, where the Seetal Aabach falls in on the right. A short distance further, below Brugg, it receives first the Reuss, its major tributary, and shortly afterwards the Limmat, its second strongest tributary. It now turns due north, and soon becomes itself a tributary of the Rhine, which it even surpasses in volume when the two rivers unite downstream from Koblenz (Switzerland), opposite Waldshut in Germany. The Rhine, in turn, empties into the North Sea after crossing into the Netherlands.

Tributaries

Limmat (after and northeast of Brugg, and northwest of Baden)
- Reppisch
- Sihl
  - Alp
  - Minster
- Lake Zurich
  - Jona
  - Wägitaler Aa
  - Linthkanal
    - Lake Walen
      - Linth
        Löntsch
        
        Sernf
        
        Flätschbach
      - Seez
      - Seerenbach
Reuss (after and northeast of Brugg, and northwest of Baden)
- Lorze
- Kleine Emme
- Lake Lucerne
- Schächen
- Chärstelenbach
- Göschener Reuss
Aabach (coming from Seetal, in Wildegg)
- Bünz
Suhre (after and north of Aarau)
- Wyna
Aabach (from the left in Aarau)
Stegbach
Dünnern (in Olten)
Wigger (right before Aarburg)
Murg (before, west of Murgenthal)
- Rot (Roggwil)
- Langete (Langenthal)
  - Ursenbach (Kleindietwil)
  - Rotbach (Huttwil)
(Grosse) Emme (after, east of Solothurn)
Lake of Bienne
- La Suze (in Biel/Bienne, right next to the outflow)
- Zihlkanal
  - Lake of Neuchatel
    - La Broye (flows through Lake Morat)
    - Zihl/La Thielle
      - L'Orbe
      - Le Talent
Saane/La Sarine (after, west of Wohlensee)
- Sense
Gürbe (in Muri bei Bern)
Zulg (west of Steffisburg)
Lake Thun
- Kander (west of Spiez)
  - Simme
  - Entschlige
Lake Brienz
- Lütschine (at the end of Lake Brienz, right next to the outflow)
Gadmerwasser (right after, northwest of Innertkirchen)

Reservoirs

Lake Grimsel,^[9] 1,908 metres (6,260 ft)
Lake Brienz,^[9] 564 metres (1,850 ft)^[10]
Lake Thun,^[9] 558 metres (1,831 ft)^[10]
Lake Wohlen,^[11] 481 metres (1,578 ft)
Niederriedsee,^[11] 461 metres (1,512 ft)
Lake Biel,^[11] 429 metres (1,407 ft)
Klingnauer Stausee, 318 metres (1,043 ft)

Incidents

On May 26, 2022, Indonesia West Java Governor Ridwan Kamil's eldest child, Emmeril Kahn Mumtadz,^[12] was declared missing after being swept away by the river current. Chronologically, Eril was swimming in the river with his sister and friends.^[13] When he wanted to rise to the surface, Eril was dragged by a fairly swift current of the river which had previously received help from his friend.^[14] The search efforts involving the police search and rescue team, maritime police, fire department, and authority of the city of Bern.^[12] One week after declared missing, Emmeril Kahn Mumtadz was declared dead in absentia at the age of 22.^[15] Although on June 9, 2022, Eril's body was located.^[16] The funeral procession of Emmeril “Eril” Kahn Mumtadz took place in the family's burial ground located in Cimaung, Bandung regency, West Java.^[17] Soon after news about Eril's body brought back to his home, Indonesian netizens review bombed Aare River's Google listing, leaving negative comments and one-star ratings as if the waterway was fully to blame for the tragedy.^[18]

Notes

^ The river Obringa, mentioned by Ptolemy (2.7.9) as a tributary of the Rhine, has been identified with either the Mosel or the Aare.^[8]

Footnotes

^ Geoserver of the Swiss Confederation
^ "High Rhine". ICPR – International Commission for the Protection of the Rhine. Retrieved 2024-06-15.
^ ^a ^b ^c ^d ^e ^f ^g Bridgwater & Aldrich 1968, p. 11
^ ^a ^b ^c ^d ^e Gresswell & Huxley 1965, p. 27
^ ^a ^b Hoiberg 2010, p. 4
^ ^a ^b ^c Cohen 1998, p. 1
^ Kristol et al. 2005, p. 73
^ Forbiger 1848, p. 126f
^ ^a ^b ^c Anon 1973, p. 74
^ ^a ^b Gresswell & Huxley 1965, p. 272
^ ^a ^b ^c Anon 1973, p. 70
^ ^a ^b "Family Declares Indonesian Governor's Son Who Drowned in Swiss River Dead".
^ "Indonesians mourn governor's son found dead in Swiss river". The Straits Times. 2022-06-13. ISSN 0585-3923. Retrieved 2024-08-30.
^ "Ridwan Kamil's Eldest Son Is Missing in Switzerland".
^ antaranews.com (2022-06-09). "Progress in search for governor's son, presumed drowned in Aare River". Antara News. Retrieved 2024-08-30.
^ Arkyasa, Mahinda (2022-06-09). "Ridwan Kamil's Son Found Dead in Aare River". Tempo. Retrieved 2024-08-30.
^ "Ridwan Kamil's drowned son laid to rest as Bandung mourns - Tue, June 14, 2022". The Jakarta Post. Retrieved 2024-08-30.
^ "Indonesians review bomb Swiss river where governor's son went missing". Retrieved 2024-08-30.

References

Anon (1973). Atlas Routier et Touristique (in French). Paris, France: Bordas-Tirade.
Bridgwater, W.; Aldrich, Beatrice, eds. (1968). "Aare". The Columbia-Viking Desk Encyclopedia (3rd ed.). New York, NY: Columbia University Press. ISBN 978-0670230709.
Cohen, Saul B., ed. (1998). "Aare". The Columbia Gazetteer of the World. New York, NY: Columbia University Press. ISBN 0-231-11040-5.
Forbiger, Albert (1848). Handbuch Der Alten Geographie. Vol. 3. Leipzig, Germany: Veriag von Gustav Mayer.
Gresswell, R. Kay; Huxley, Anthony, eds. (1965). Standard Encyclopedia of the World's Rivers and Lakes. New York, NY: G. P. Putnam's Sons.
Hoiberg, Dale H., ed. (2010). "Aare River". Encyclopædia Britannica (15th ed.). Chicago, IL: Encyclopædia Britannica, Inc. ISBN 978-0-85229-961-6.
Kristol, Andres; Cattin, Florence; Meroni, Barbara; Schmid, Gabrielle, eds. (2005). "Aarau AG (Aarau)" [Encyclopedia of the Swiss municipality of LSG: Dictionnaire de toponymique scommunes Suisses DTS / Dizionario dei comuni toponomastico svizzeri DTS]. Lexikon der schweizerischen Gemeindenamen LSG: Dictionnaire toponymique de scommunes suisses DTS /Dizionario toponomastico dei comuni svizzeri DTS (in German) (1st ed.). Stuttgart, Germany: Huber Frauenfeld. ISBN 3-7193-1308-5.