HydroBASINS lev08 watershed · #2080387260
Bassin de Сейм
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 2 administrative regions : Kurskiy rayon, Oktyabr'skiy
Sub-basin area
55,3km²
Upstream area
8 116,9km²
Discharge
41,69m³/s
Mean elev.
181m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Большая Курица404 km²
- Bassin de Сейм360 km²
2 dept-equivalent regions (GADM L2)
- Oktyabr'skiyKursk · Russia41.3 km²74.4% of basin
- Kurskiy rayonKursk · Russia14.2 km²25.6% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
417 distinct species · 1 761 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Bassin de Сейм : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 3 types (connectance 24.0%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
6,0°C
Annual rain
607mm
Moisture idx (CMI)
-0,16
Runoff
152mm/an
PET
723mm
AET
507mm
Mean slope
1,0°
Water table
171cm
Forest
3%
Crops
64%
Urban
16%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)