Seym
Seym is a mapped river in the YearMaps hydrographic index. River courses organise settlement, agriculture and frontier-making more durably than any political boundary, and this reach is indexed against the dams, lakes and cities within its catchment.
- Feature Class
- River
- Coordinates
- 51.44°, 34.85°
About Seym
The Seym or Seim (Russian: Сейм; Ukrainian: Сейм) is a river that flows westward in Russia and Ukraine. It is 748 kilometres (465 mi) long (250 km within Ukraine) and its basin area about 27,500 square kilometres (10,600 sq mi). It is the largest tributary of the Desna.
Places on the river include Kursk, Kurchatov, Rylsk, Glushkovo, Putyvl, Baturyn, and the junction with the Desna, which continues west and south past Chernihiv to Kyiv.
In September 2024, during the Russian invasion of Ukraine, Ukrainian officials accused Russia of polluting the river by dumping sewage from a sugar factory in Tyotkino, Kursk Oblast, resulting in environmental damage estimated at Hr 186 million ($4.5 million) in Chernihiv Oblast that included a decrease in oxygen levels and fish kills downstream.
The river also serves cooling water for the Kursk Nuclear Power Plant in Russia.
Encyclopedic summary adapted from Wikipedia: Seym (river) (CC BY-SA 4.0).
Seym: Key Facts
| Length | 696 km |
|---|---|
| Average discharge | 100 m³/s |
| Drainage basin | 27,500 km² |
| Source | Belgorod Oblast |
| Mouth | Desna |
| Drainage system | Desna basin |
| Tributaries | Svapa, Kleven, Leshchinka, Schemlya, Vir, Chasha, Yezuch, Kukilka |
Facts from Wikidata Q738986 (CC0).
Major River Dossiers
Hand-written studies of the great river systems of history.
Connected Reaches
Nearby watercourses in the same drainage network.
Water Bodies in the Catchment
Settlements Along the Reach
Hydraulic Infrastructure Nearby
Surrounding Terrain
Seym: Quick Answers
- Where is Seym?
- Seym is located in Russia and Ukraine, at 51.4381° N, 34.8453° E.
- Are there dams on the Seym?
- No dam on the Seym is recorded in the YearMaps dam index, which covers major structures only.