Ojat
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Ojat Оять |
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| Data | ||
| Water code | RU : 01040100812102000012850 | |
| location | Vologda Oblast , Leningrad Oblast ( Russia ) | |
| River system | Neva | |
| Drain over | Swir → Neva → Baltic Sea | |
| origin |
Chaimosero 60 ° 24 ′ 29 ″ N , 35 ° 20 ′ 26 ″ E |
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| Source height | 222 m | |
| muzzle |
Swir coordinates: 60 ° 30 ′ 19 " N , 33 ° 1 ′ 38" E 60 ° 30 ′ 19 " N , 33 ° 1 ′ 38" E |
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| Mouth height | 5.3 m | |
| Height difference | 216.7 m | |
| Bottom slope | 0.81 ‰ | |
| length | 266 km | |
| Catchment area | 5220 km² | |
| Drainage location: 39 km above the mouth |
MQ |
51.8 m³ / s |
 Location of the Ojat (Оять) in the catchment area of the Swir |
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The Ojat ( Russian Оять ) is a left tributary of the Swir in the Vologda and Leningrad oblasts in the north of the European part of Russia .
The ojat has its origin in the lake Tchaimosero on the Vepsovsk heights . It flows mainly in a westerly direction and flows into the Swir - 15 km before it flows into Lake Ladoga . The Ojat has a length of 266 km. It drains a lake-rich catchment area in the east of Leningrad Oblast, which covers an area of 5220 km². The mean discharge 39 km above the mouth is 51.8 m³ / s.
The river has rapids in its lower reaches. The spring flood forms a significant part of the annual runoff. At the end of November / beginning of December the river freezes. The ice cover of the Ojat remains closed until the end of April / beginning of May.
