Rivière· 210 segments
Сейм
Crosses 22 administrative regions : Bakhmats'kyi, Bilopils'kyi, Borznians'kyi, Buryns'kyi, Glushkovskiy rayon +17
Total length
826km
Max discharge
119,1m³/s
Max Strahler
6
Segments matched
210
River geography22 admin regions · 0 communes
22 administrative regions crossed (GADM L2)
- Kurskiy rayonKursk · Russia105.2 kmin this dpt
- Solntsevskiy rayonKursk · Russia86.8 kmin this dpt
- Kurchatovskiy rayonKursk · Russia76.4 kmin this dpt
- Putyvl's'kyiSumy · Ukraine74.1 kmin this dpt
- Korenevskiy rayonKursk · Russia70.9 kmin this dpt
- Konotops'kyiSumy · Ukraine69.9 kmin this dpt
- Bakhmats'kyiChernihiv · Ukraine66.0 kmin this dpt
- Glushkovskiy rayonKursk · Russia62.1 kmin this dpt
- L'govskiy rayonKursk · Russia54.6 kmin this dpt
- Krolevets'kyiSumy · Ukraine48.7 kmin this dpt
- Oktyabr'skiyKursk · Russia44.0 kmin this dpt
- Ryl'skiy rayonKursk · Russia23.4 kmin this dpt
- Manturovskiy rayonKursk · Russia20.1 kmin this dpt
- Korops'kyiChernihiv · Ukraine17.3 kmin this dpt
- Gubkinskiy rayonBelgorod · Russia16.3 kmin this dpt
- KurskKursk · Russia16.2 kmin this dpt
- Buryns'kyiSumy · Ukraine16.2 kmin this dpt
- Borznians'kyiChernihiv · Ukraine13.4 kmin this dpt
- Sosnyts'kyiChernihiv · Ukraine12.3 kmin this dpt
- Medvenskiy rayonKursk · Russia11.0 kmin this dpt
- Bilopils'kyiSumy · Ukraine3.7 kmin this dpt
- Pristenskiy rayonKursk · Russia2.8 kmin this dpt
24 intersecting protected areas
Seimskyi
IUCN Not ReportedRegional landscape park
Serednioseimskyi
IUCN Not ReportedEmerald Network
Dolyna Seimu
IUCN Not ReportedEmerald Network
Serednoseimskyi
IUCN Not ReportedZakaznyk
Yezuchskyi
IUCN Not ReportedZakaznyk
Mutynskyi
IUCN Not ReportedZakaznyk
Urochishhe Krutoj Log
IUCN IIINatural Monument
Obmachivske
IUCN Not ReportedZakaznyk
Ozarychanskyi
IUCN Not ReportedZakaznyk
15 more protected areassorted by area
Popiv Hrudok
IUCN Not ReportedZakaznyk
Bobrovyi
IUCN Not ReportedZakaznyk
Pryseimivskyi
IUCN Not ReportedZakaznyk
Olenkyn
IUCN Not ReportedZakaznyk
Lozovytsia
IUCN Not ReportedZapovidne urochyshche
Bilynne
IUCN Not ReportedZakaznyk
Mytchenkivske
IUCN Not ReportedZakaznyk
Urochyshche Boromlia
IUCN Not ReportedNatural monument
Stavyshche
IUCN Not ReportedZakaznyk
Kuchuhurske
IUCN Not ReportedZakaznyk
Gladiolusovye luga
IUCN IIINatural Monument
Drahomyrivshchyna
IUCN Not ReportedZapovidne urochyshche
Kaminskyi
IUCN Not ApplicablePark-monument of landscape art
Kaminski pishchanyky
IUCN Not ReportedZakaznyk
Park Lebyazh`e
IUCN Not ReportedNatural Monument
1 page = 1 named river (aggregation of 210 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
9 distinct species · 9 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 6 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Сейм : 6 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 3 interactions GloBI sur 2 types (connectance 20.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
826km
Max discharge
119,1m³/s
Max Strahler
6
Segments matched
210
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.