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Kalchik river, Ukraine
Ukraine, Donetsk region, Mariupol
The Kalchik River is the right tributary of the Kalmius River, flowing through the territory of the Donetsk region of Ukraine.
Kalchik flows into Kalmius 6 km from its mouth. Length – 88 km, catchment area – 1.263 km². Water consumption ranges from 3.0 to 30 m³ / sec. The tributary is Maliy Kalchik. Mirror carp, grass carp, silver carp and other fish are found in Kalchik.
- Submitted by
- Artem Bereznev
- Approved by
- Alexey Malyshev & Philippe Chevoleau
- GPS
- 47.1199989, 37.6100006
- Geographical region
- Eastern Europe
- Drainage Basin
- Drainage area - is 1.263 km²
- River catchment
- Water body type
- River
- Water body name
- Kalchik River
- Water body part
- River mouth
- Water body course
- Lower course
- Water body: tributary of
- Tributary name
Videos above and below water
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Water Chemistry
Water information
- Water type
- fresh-water
- Water color
- Clear water
- Water transparency
- Medium
- Concentration of sediments
- Low
- Water temperature
- 22 °C
- Water flow/curent
- Slow
Chemical parameters
- pH
- 7.8
- Conductivity
- 1200
- GH
- 30 mg/l
- dGH
- KH
- 7 mg/l
- dKH
- Dissolved Oxygen
- 5 %
Substrate in nature
- Sand
- Grey
- Pebble/Gravel
- Stone
- Grey
- Stone form
- Irregular
- Silt/Mud
- Black
- Leaves
- no
- Driftwood
- Few
- Submerged terrestrial vegetation
- no
Aquatic Biotope
- Date of collecting
- 12.07.2020
- Collecting area
- River bank
- Water depth
- 2,0m
- Air temperature
- 26 °C
- Sunlight
- Full sun
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:
Aquatic plant:
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.
Comment by the expert
Alexey Malyshev: In general, the biotope is well studied, but there is a big mistake in the work. Rhodeus amarus lives in this river. Rhodeus sericeus lives in East Asia. Earlier, the European bitter pot was considered a subspecies of the Far Eastern bitter pot, but today most scientists distinguish it as a separate species.
Philippe Chevoleau: Nice job regarding your research on the aquatic biotope. Well documentted. It’s nice to get so much information about a locality. I wish there could have been some sources (biography, sitography) in English, but I understand that it’s not easy to find, if it exists. So, congratulations.
