| Ulkayak Өлкейек / улькаяк | |
|---|---|
 Sentinel-2 image with the lower Ulkayak and lake Kyzylkol in the upper left | |
  Mouth location in Kazakhstan | |
| Location | |
| Countries | Kazakhstan |
| Physical characteristics | |
| Source | Confluence of Zhantai and Tolybai rivers |
| • coordinates | 50°31′18″N 62°18′56″E / 50.52167°N 62.31556°E |
| Mouth | Kyzylkol |
• coordinates | 48°54′41″N 62°00′26″E / 48.91139°N 62.00722°E |
• elevation | 77 metres (253 ft) |
| Length | 349 km (217 mi) |
| Basin size | 13,300 km2 (5,100 sq mi) |
| Discharge | |
| • average | 1.6 m3/s (57 cu ft/s) |
| Basin features | |
| Progression | Kyzylkol → Ayrkol → Turgay |
The Ulkayak (Kazakh: Өлкейек; Russian: улькаяк) is a river in Kazakhstan. It has a length of 349 kilometres (217 mi) and a catchment area of 13,300 square kilometres (5,100 sq mi).[1]
It is one of the rivers of the southern part of the Turgay Depression, belonging to the Irgyz -Turgay ecoregion.[2] It flows across the Zhangeldi District of the Kostanay Region, Kazakhstan.[3] There are historical Kazakh sites in the valley of the Ulkayak.[4][5]
- ^ Kazakhstan National Encyclopedia / Ch. ed. B.O. Jakyp. — Almaty: « Kazakh encyclopedia» ZhSS, 2011. ISBN 9965-893-64-0(T.Z.), ISBN 9965-893-19-5
- ^ Irgyz - Turgai — Freshwater Ecoregions of the World
- ^ Google Earth
- ^ Excursion bus tours in Kazakhstan - silkadv.com
- ^ Экспедиция на Улькаяк © e-history.kz