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Zeroud Oued (واد زرود) is a 
The
Zeroud Oued (واد زرود) is a stream
A stream is a continuous body of water, body of surface water Current (stream), flowing within the stream bed, bed and bank (geography), banks of a channel (geography), channel. Depending on its location or certain characteristics, a strea ...
in central Tunisia
Tunisia, officially the Republic of Tunisia, is a country in the Maghreb region of North Africa. It is bordered by Algeria to the west and southwest, Libya to the southeast, and the Mediterranean Sea to the north and east. Tunisia also shares m ...
at Latitude
In geography, latitude is a geographic coordinate system, geographic coordinate that specifies the north-south position of a point on the surface of the Earth or another celestial body. Latitude is given as an angle that ranges from −90° at t ...
, it flows via Sebkhet Cherita The Sebkhet Cherita is a salt lake wetland in the Sousse Governorate of Tunisia, 25 kilometers southwest of the city of Sousse and 25 kilometers southeast of the city of Kairouan. It covers an area of 11600hectares and is 17 by 9 kilometers wide. ...
Lake, into the Mediterranean Sea
The Mediterranean Sea ( ) is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean basin and almost completely enclosed by land: on the east by the Levant in West Asia, on the north by Anatolia in West Asia and Southern Eur ...
at the Gulf of Hammamet
Gulf of Hammamet () is a large gulf in northeastern Tunisia.
Geography
The Gulf of Hammamet is located south of the Cape Bon peninsula. To the other side of the Cape Bon peninsula is the Gulf of Tunis
The Gulf of Tunis () is a large Mediterrane ...
.
Its average course is forty kilometers even if the maximum length of its bed reaches 150 kilometers.
It collects its water basin upstream by a series of wadi
Wadi ( ; ) is a river valley or a wet (ephemerality, ephemeral) Stream bed, riverbed that contains water only when heavy rain occurs. Wadis are located on gently sloping, nearly flat parts of deserts; commonly they begin on the distal portion ...
s draining the Nara
The National Archives and Records Administration (NARA) is an independent agency of the United States government within the executive branch, charged with the preservation and documentation of government and historical records. It is also task ...
region and Jebel Tazza, all being retained by the dam Sidi Saad, located about 45 kilometers southwest of Kairouan
Kairouan (, ), also spelled El Qayrawān or Kairwan ( , ), is the capital of the Kairouan Governorate in Tunisia and a UNESCO World Heritage Site. The city was founded by the Umayyads around 670, in the period of Caliph Mu'awiya (reigned 661 ...
. Downstream of the dam, a series of wadis flow into the Wadi Zeroud, flowing to a zone located about ten kilometer
The kilometre ( SI symbol: km; or ), spelt kilometer in American and Philippine English, is a unit of length in the International System of Units (SI), equal to one thousand metres (kilo- being the SI prefix for ). It is the preferred mea ...
s south-east of Kairouan where it ceases to be a single wadi and splits into several parts some of which joined the sebkha Kelbia.
The rainfall
Rain is a form of precipitation where water droplets that have condensed from atmospheric water vapor fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. ...
reduced the region led to the near-absence of water in summer but also to floods in autumn, when rain falls during a short period of time. Construction of the dam has allowed the irrigation of farmland and helped prevent flooding, but, however, reduced the level of groundwater also overexploited.
During Roman times
In modern historiography, ancient Rome is the Roman civilisation from the founding of the Italian city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. It encompasses the Roman Kingd ...
the area was intensely farmed.
Sidi Saad Dam
The dam Sidi Saad (سد سيدي سعد) is a dam on the Oued Zeroud built in 1982, at 35°22'53"North
North is one of the four compass points or cardinal directions. It is the opposite of south and is perpendicular to east and west. ''North'' is a noun, adjective, or adverb indicating Direction (geometry), direction or geography.
Etymology
T ...
, 9° 41'42"East
East is one of the four cardinal directions or points of the compass. It is the opposite direction from west and is the direction from which the Sun rises on the Earth.
Etymology
As in other languages, the word is formed from the fact that ea ...
between Nasrallah
Nasrallah () is a masculine given name, commonly found in the Arabic language and is used by Muslims, Christians, and other Arabs. It may also be transliterated as Nasralla, Nasrollah, Nasrullah, and Al-Nasrallah. Bearing the surname often ind ...
and Hajeb El Ayoun
Hajeb El Ayoun () is a town and commune in the Kairouan Governorate, Tunisia. As of 2004 it had a population of 9,648. It is also the capital of a district of 35,403 inhabitants.
The Mayor is Hassen Zaïdi, and the post code is 3160.
Geograph ...
.
At a height of 82 meter
The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of of ...
s, it can hold up to 120 million cubic meter
The cubic metre (in Commonwealth English and international spelling as used by the International Bureau of Weights and Measures) or cubic meter (in American English) is the unit of volume in the International System of Units (SI). Its symbol is m ...
s of water
Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and Color of water, nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known liv ...
in a reservoir
A reservoir (; ) is an enlarged lake behind a dam, usually built to water storage, store fresh water, often doubling for hydroelectric power generation.
Reservoirs are created by controlling a watercourse that drains an existing body of wa ...
with a surface area of 9000 hectare
The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), that is, square metres (), and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. ...
s. It is used for flood mitigation
Flood management or flood control are methods used to reduce or prevent the detrimental effects of flood waters. Flooding can be caused by a mix of both natural processes, such as extreme weather upstream, and human changes to waterbodies and ru ...
and irrigation
Irrigation (also referred to as watering of plants) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has bee ...
. On 2 February 2012, the dam Sidi Saad was recognized as a Ramsar site
A Ramsar site is a wetland site designated to be of international importance under the Ramsar Convention,8 ha (O)
*** Permanent 8 ha (P)
*** Seasonal Intermittent < 8 ha(Ts)
**
Oued Zeroud
at Ramsar Sites Information Service.
at Ramsar Sites Information Service.
References
{{coord missing, Tunisia Zeroud Ramsar sites in Tunisia