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{{Infobox river
| name = Sota
| image = River Niger Tributaries from Benin OSM.png
| image_caption = North Benin with the Sota in the center
| source1_location = Near [[Ndali, Benin]], [[Borgou Department]]
| mouth_location = [[Niger River]] at [[Malanville]]
| subdivision_type1 = Country
| subdivision_name1 = [[Benin]]
| length = {{convert|250|km|abbr=on}}
| source1_elevation =
| discharge1_avg = {{convert|31|m3/s|cuft/s|abbr=on}}
| basin_size = {{convert|13650|km2|sqmi|abbr=on}}
}}

The '''Sota''' is a river of northern [[Benin]] flowing through the departments of [[Borgou Department|Borgou]] and [[Alibori Department|Alibori]]. It is a tributary of the [[Niger River]] and the [[Tassiné River]] is one of its tributaries. The river is approximately {{convert|250|km|abbr=on}} in length and covers a basin area of {{convert|13650|km2|abbr=on}}.<ref>{{cite web|url=http://www.fao.org/docrep/005/t0360e/T0360E02.htm |title=COUNTRY FILES – SIFRA BOOK 2 – BENIN |publisher=Fisheries and Aquaculture Department, [[Food and Agriculture Organization of the United Nations|FAO]] |accessdate=2015-09-15}}</ref>

==Geography==
The Sota rises northeast of the town of [[Ndali, Benin|Ndali]] in the Borgou Department. The river runs toward the north-north-east and empties into the [[Niger River]] at [[Malanville]].

==Rainfall==
The annual precipitation has been recorded at several stations in the basin of the Sota:

*[[Ségbana|Segbana]] (center-east of the basin, near the Nigerian border): {{convert|1177.4|mm|abbr=on}} spread over 53 days.
*[[Kandi, Benin|Kandi]] (center-west of the basin): {{convert|1055.1|mm|abbr=on}}, spread over 80 days
*[[Malanville]] (at the north end of the basin at the confluence with Niger): {{convert|919.9|mm|abbr=on}} in 53 days
There is everywhere a large surplus rainfall from July to September (boreal summer), giving rise to violent floods, but the deficit is a severe dry season from December to April.<ref>{{cite web |url=http://www-naweb.iaea.org/nafa/ipc/public/ipc-annex3-tsetse.pdf |title=Scénarios de lutte contre les trypanosomes en Afrique occidentale (annexe 3 page 14) - 2001 |language=French |format=PDF |accessdate=2008-03-04}}</ref>

==Hydrometry==
The flow of the river has been observed for 40 years (1953–1992) at the hydro station in [[Couberi]], located near its confluence with the Niger River at Malanville.

At Couberi, the average annual flow module or observed during this period was {{convert|31|m3/s|abbr=on}} for an area taking into account {{convert|9111|to|13,410|km2|abbr=on}}. The monthly average flows observed from February to April are from {{convert|3.7|–|3.9|m3/s|abbr=on}}, which is quite remarkable in Africa at its discretion, with other rivers in the region falling consistently enough to nearly dry up in the dry season. It is true that the level of rainfall of {{convert|900|–|1200|mm|abbr=on}} per year is very consistent. On the observation period of 40 years, the minimum monthly flow was {{convert|2|m3/s|abbr=on}} while the maximum monthly flow amounted to {{convert|358|m3/s|abbr=on}} which is more than the average flow of the [[Seine]] in [[Paris]].<ref>{{cite web |url=http://www.grdc.sr.unh.edu/html/Polygons/P1734600.html |title=GRDC - La Sota à Couberi |accessdate=2008-03-04}}</ref>

;Average monthly flows of Sota (m<sup>3</sup>/s (cu ft/s)) measured at the hydrometric station Couberi. (Data calculated over 40 years)

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== References ==
{{reflist}}

==External links==
* [http://www-naweb.iaea.org/nafa/ipc/public/ipc-annex3-tsetse.pdf www-naweb.iaea.org] {{in lang|fr}}

{{Niger River}}

{{Coord|11.875|3.406|display=title}}

[[Category:Rivers of Benin]]
[[Category:Tributaries of the Niger River]]

Sota River - Revision history

imported>Nyttend: /* Geography */ Don't need to repeat the country