Pra (Oka)
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Pra Пра |
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| Data | ||
| Water code | RU : 09010102312110000026245 | |
| location | Moscow Oblast , Ryazan ( Russia ) | |
| River system | Volga | |
| Drain over | Oka → Volga → Caspian Sea | |
| Drain off |
Swjatojesee ( Russian Озеро Святое , Osero Swjatoje) 55 ° 14 ′ 38 ″ N , 40 ° 3 ′ 13 ″ E |
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| Source height | 112 m | |
| muzzle | about 30 kilometers southwest of Kassimow in the Oka coordinates: 54 ° 44 ′ 52 " N , 41 ° 0 ′ 34" E 54 ° 44 ′ 52 " N , 41 ° 0 ′ 34" E |
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| Mouth height | 85 m | |
| Height difference | 27 m | |
| Bottom slope | 0.16 ‰ | |
| length | 167 km | |
| Catchment area | 5520 km² | |
| Drain |
MQ HHQ |
25 m³ / s 600 m³ / s |
| Left tributaries | Sowka , Kad | |
| Right tributaries | Jalma , Portzewka , Urasch | |
| Flowing lakes | Swjatojesee, Sokorewosee , Martynowosee | |
| Small towns | Spas Klepiki | |
 Painting of the Pra river from 1899 |
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 Location of the Pra (Пра) in the catchment area of the Oka |
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The Pra ( Russian Пра ) is a 167 km long left tributary of the Oka in the European part of Russia .
course
The Pra rises in the Swjatojesee ( Russian Озеро Святое , Osero Swjatoje) on the border of the Moscow and Ryazan oblasts . It leaves the lake at its southwestern end and flows in a southwestern direction along the border of the oblasts. After about 12 km it turns in a southerly direction and now flows through the Meschtschora lowlands in the area of Ryazan Oblast .
Here it flows through Lake Sokorevo ( Russian Озеро Сокорево , Osero Sokorewo) and Lake Martynovo ( Russian Озеро Мартыново , Osero Martynowo). The river now flows east and reaches Spas-Klepiki . Here it turns south and now flows through partly dense coniferous forest. The river forms numerous oxbow lakes and takes in many smaller streams that drain the swampy area.
At the village of Deulino the Pra turns in an easterly direction. From now on it flows in the area of the Oka nature reserve ( Russian Окский заповедник , Okski Sapowednik). After the confluence of the Kad , it turns south again and flows through the wooded central Ryazan Oblast. East of Kidusowo it turns again to the east. It now meanders very strongly and repeatedly splits into several arms . About 30 kilometers southwest of Kassimow it finally reaches the Oka.
Hydrology and tourism
The Pra has an average gradient of 0.141 m / km and is between 20 and 25 meters wide. The river freezes over at the end of November and remains under ice until April. In the ice-free time it is used for tourism by boat hikers .
Individual evidence
- ↑ a b c d Tourist Aquatic Encyclopedia: Ryazan Oblast. The Pra and Gus rivers. ( Memento of the original from February 28, 2002 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Description of Pra (russ.)
- ↑ a b c d e article Pra in the Great Soviet Encyclopedia (BSE) , 3rd edition 1969–1978 (Russian)
- ↑ a b Pra in the State Water Register of the Russian Federation (Russian)
- ↑ a b Voronow, Ju. E.g .: 100 selected routes for kayaking trips on the tourism website skitalets.ru (russ.)
