Zigi River

Waterfalls of Sigi at Amani (photographed 1906-1918 )

Template: Infobox River / Obsolete

The Sigi, in the literature often Sigifluss, ( Swahili: Mto Sigi, English: Sigi River or Zigi River ) is a river in the Tanga Region in Tanzania.

The river rises in the Amani Nature Reserve in the Usambara Mountains, specifically in Handei Mountains, at an altitude of 1130 meters and flows 100 km long barrel and multiple change the running direction 40 kilometers north of the town of Tanga in the Indian Ocean. Its tributaries are the Kihuhui (from the south ) and the Musi ( from the north ). In the 1970s, the river was dammed with German funding (including from the KfW bank ) in order to create a reservoir of drinking water for the region. This was completed in 1978 with clay core dam was built near the village Mabayani, so he also bears the name Mabayani Dam ( Dam Mabayani ). The resulting reservoir has a length of about 3,500 m, a width of about 400 m and is about 20 km from Tanga away. The initial capacity of 7.7 million cubic meters from 1978 is no longer achieved today as a result of erosion and landslides. Overall, the flow of supplies around 100,000 people with drinking water, but also tea plantations, Sisalfarmen and the industry with hot water.

In 1996, a Danish study by a dangerous amount of heavy metals in the water, which are led by the surrounding industrial downstream of the dam in the Sigi.

Hydrometrie

Average monthly flow of Sigi measured at the hydrological station in Lanconi Estate, about 10 km above the Mabayani Dam in m³ / s (1957 - 1990). The Sigi flows stimulate time-dependent, as most of the rivers in the region.