Seybouse river

Seybouse (وادي سيبوس)
Origin Medjez Amar, Tell Atlas Algeria
Mouth Mediterranean Sea, near Annaba, Algeria
Basin countries Algeria
Length 225 km (140 mi)
Source elevation 0
Avg. discharge 11,5 m³/s (406 ft/s) at Guelma and Annaba
Basin area 6,471 km² (2,498 mi²)

Seybouse (Arabic: وادي سيبوسOued Seybouse) is a river in northeastern Algeria, near the border with Tunisia. In Roman times, it was called the Ubus.


The river runs for a distance of about 225 km flowing through Guelma and Annaba Provinces. It starts in Medjez Amar, in the Tell Atlas north-west of Guelma Province. Its flows into the Mediterranean Sea at Seybouse (called Joannonville under French rule) to the south-east of the city of Annaba.[1] Its mouth is just just north of Sidi Salem, the site of Hippo Regius where Saint Augustine lived in AD 391-430.

The Seybouse is used for irrigation of agricultural areas, but it is becoming polluted because of industrial activities.[2]


(As of 1998; source: ANRH)
Element Amount
Flow 11.5 m³/s
Temperature 21.41°C
pH 8.21
Oxygen saturation 36.61%
DBO1 18.33
DCO² 124.3
Nitrates (NO3) 5.58
PO4−3 2.29
Ammonium 9.18


external links

  • (French) ANRH (National Agency for Water Resources)
  • Augustine in Algeria
  • 1902 Encyclopedia

Coordinates: 36°52′01″N 7°46′18″E / 36.86694°N 7.77167°E / 36.86694; 7.77167

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