Oued Seybousse
The Seybouse in Guelma Province, Algeria
Origin	Medjez Amar, Algeria
Mouth	Mediterranean Sea near Annaba, Algeria
Basin countries	Guelma Province and Annaba Province, Algeria
Length	225 km (140 mi)
Avg. discharge	11,5 m³/s (406 ft/s) at Guelma and Annaba
Basin area	6,471 km² (2,498 mi²)

Seybouse is a oued (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 120 miles. It starts in Medjez Amar, in the north-west of Guelma Province, and its mouth is at Seybouse (called Joannonville under French rule), just to the south-east of the city of Annaba (called Bône under French rule), the site of Hippo Regius where Saint Augustine lived in AD 391-430. The Seybousse is used for irrigation of agricultural areas, but it is becoming polluted because of industrial activities.

[edit] Characteristics

(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

[edit] References

• The old metal bridge over the river Seybouse at Joannonville
• (French) ANRH (National Agency for Water Resources)
• Potential pollution of groundwater in the valley of the Seybouse River, north-eastern Algeria
• Augustine in Algeria
• 1902 Encyclopedia

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