Avar Koisu (in the headwaters - Dzhurmut ) - the river in Dagestan , the right component of Sulak . The length of the river is 178 km.
| Avar Coicu | |
|---|---|
| avar Avar Gor | |
 The confluence of the Avar Koisu and Andean Koisu rivers | |
| Characteristic | |
| Length | 178 km |
| Pool | 7660 km² |
| Water flow | 95 m³ / s (village Maydanskoe ) |
| Watercourse | |
| Source | |
| • Location | Guton ( Main Caucasus Range ), Tlyaratinsky District of Dagestan |
| • Height | 2740 m |
| • Coordinates | |
| Mouth | Sulak |
| • Location | confluence with the river Andean Koisu |
| • Height | 300 m |
| • Coordinates | |
| River slope | 13.7 m / km |
| Location | |
| Water system | Sulak → Caspian Sea |
| A country |
|
| Region | Dagestan |
| HWR Code | |
 - source  - mouth | |
Content
Toponymy
The name "Koisu" received from the Turkic ( Kumyk ) "kyuy suv" - sheep water [2] . Until the middle of the 20th century, the name “Kyoisu” was borne by the river Sulak .
Geography
It originates on the slope of the town of Guton (the Main Caucasian ridge ), flows around the ridge. Nukatl, in a narrow valley, often a canyon. Flowing mainly in the northeastern direction, it merges with the Andy Koisu River , 6 kilometers east of. Chirkot, forms the Sulak River.
The length of the river is 178 km, the total fall is 2440 m, the catchment area is 7660 km², its average height is 2160 m. The area of glaciation in the river basin is 6.8 km². The height of the source is 2740 m above sea level [3] . The slope of the river is 13.7 m / km [3] .
The catchment of the river in the north-west is limited by the Bogossky Range, in the south-west by the Main Caucasus Range, in the south by the Dulty-Dag massif and the Sarfun-Yal ridge. A significant part of the area lies above 1500 m above sea level, including 10% above 3000 m.
Hydrology
The Avar Koisu River is characterized by spring and summer floods and low winter low water. Distribution of flow within the year is not uniform. The most abounding river is in the period from May to August, during which up to 65% of the annual volume of flow passes.
The highest water discharge is formed in some years mainly by melt water, and in others - by rainwater. The average annual consumption is 95.0 m³ / s. Maximum - 1350 m³ / s (recorded in 1963 near the village of Maidanskoe). The river carries a large amount of suspended and drawn sediment (the highest turbidity is 17,000 g / m³).
Tributaries
The total number of rivers in the basin reaches 1,440, of which 52 rivers have a length of more than 10 km. The main tributaries are the rivers: Tsemar-or , Khzan-or , Rutlukh , Temir , Tobot , Karakois , Gichinu .
River study and water value
The regime of the river was studied at 9 posts: Tlyarata (Ukal), Antsukh, Golotl, B. Gotsatl, Arakan Gorge, Red Bridge, Balakhani Bridge, Untsukul, Gimry and Ashilta Bridge. To date, GP Ukal, Golotl, Red Bridge are operating.
The river is important water management. It is used for water supply and irrigation of adjacent villages and fields. It has great hydropower potential. The Irganayskaya HPP operates on the river, the Gotsatlinskaya HPP is under construction. In addition, the construction of the Golotlinskaya, Sovetskaya, Avar and Magarskaya HPPs was planned.
See also
- Gotsatlinskaya HPP
- Irganay HPP
Links
- Koisu // The Great Soviet Encyclopedia : [in 30 t.] / Ch. ed. A. M. Prokhorov . - 3rd ed. - M .: Soviet Encyclopedia, 1969-1978.
- Water Travel Club New Rogue
- Avar Koisu - Water Routes
- [green-pages.narod.ru/albums/kojsu/index.html/ Avar Koisu River] (inaccessible link) . Archived December 25, 2012.
- Construction Gotsatlinskaya HPP
Notes
- ↑ Surface water resources of the USSR: Hydrological knowledge. T. 9. Transcaucasia and Dagestan. Issue 3. Dagestan / ed. P. P. Burtova. - L .: Gidrometeoizdat, 1964. - 76 p.
- ↑ Kumyk-Russian Dictionary (Kumukuch-Oruscha Sözliuk), Bammatov B. G., Gadzhiakhmedov N. E. 2013
- ↑ 1 2 Surface water resources of the USSR: Hydrological knowledge. T. 9. Transcaucasia and Dagestan. Issue 3. Dagestan / Ed. P. P. Burtova. - L .: Gidrometeoizdat, 1964. - 76 p.