Kalchik river, Ukraine

Environment

Environment

Affected by human activity

Affected by human activity

Agriculture

Agriculture

Massive

Surrounding area

The Kalchik River flows on the territory of Ukraine through the Donetsk region. The city of Mariupol is located on its banks.

Underwater landscape

The relief of the basin is predominantly flat, moderately crossed by ravines and gullies. The river bed is branched, meandering, and in places very winding. The river flow speed is from 0.4 m / s to 1.5 m / s. The nature of the current is varied throughout. In the upper reaches it has a weakly expressed mountain character, in the lower reaches it is a typical steppe species. In the upper and middle reaches, the character of the shores is mountainous and treeless, in the lower shores are low with sparse trees, in some places there are thickets of reeds. The floodplain of the river is two-sided, in places of narrowing of the valley it is absent, the width of the floodplain is from 150 m to 2 km. The bottom is stony and clayey, covered with a layer of silt.

Fishes:

• Rhodeus sericeus
• Neogobius melanostomus
• Rutilus rutilus
• Ponticola platyrostris

Wetland plant:

• Phragmites sp.
• Typha sp.

Aquatic plant:

• Ceratophyllum sp.

Aufwuchs on Salix willow (Salicaceae)

Threats to ecology

In the upper and middle reaches, Kalchik is polluted with Mariupol household wastewater, as well as salts washed away from agricultural areas. The water contains an increased content of oil products and non-volatile phenols. Water salinity increases from source to mouth. Near the mouth, mineralization reaches 2.5 g / l.

Bibliography

• → ПУТИ СОХРАНЕНИЯ АБОРИГЕННОЙ БИОТЫ РЕКИ КАЛЬМИУС by Паладий И.П.
  
• → О реках Донецких на Кальмиусской дороге by Николай ЛОМАКО
  

Sitography

Comment by the expert