| Bolgasyn Болғасын | |
|---|---|
 Final stretch of river Bolgasyn and its mouth in lakeTebezSentinel-2 image. | |
  Mouth location in Kazakhstan | |
| Location | |
| Countries | Kazakhstan |
| Physical characteristics | |
| Source | Mugalzhar |
| • coordinates | 48°22′22″N59°04′40″E / 48.37278°N 59.07778°E /48.37278; 59.07778 |
| Mouth | Tebez |
• coordinates | 48°11′56″N59°39′43″E / 48.19889°N 59.66194°E /48.19889; 59.66194 |
• elevation | 167 m (548 ft) |
| Length | 73 km (45 mi) |
| Basin size | 1,670 km2 (640 sq mi) |
| Discharge | |
| • average | 0.5 m3/s (18 cu ft/s) |
TheBolgasyn (Kazakh:Болғасын) is a river inShalkar District,Aktobe Region,Kazakhstan. It is 73 kilometres (45 mi) long and has a catchment area of 1,670 square kilometres (640 sq mi).[1]
The river is part of theShalkar Basin. In the spring the Bolgasyn is used to water local livestock.[1]
The Bolgasyn has its sources in theShagyray Plateau, part of the southern sector of theMugalzhar Hills. It heads first southeastwards, parallel to the upper course of theKauylzhyr river that flows a little to the south, to the northwest of lakeShalkar. In its middle course the river bends eastwards and in its final stretch it bends northeastwards, entering lakeTebez from the southwest.[2][3][1]
The Bolgasyn usually reaches its highest level for a few weeks in March and April when the snows melt. By May it splits into separate ponds and then dries up completely even before the summer. Its floodplain has 38 small tributaries with a total length of 10 km (6.2 mi).[1]
