HydroBASINS lev08 watershed · #2080387090
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 3 administrative regions : Khomutovskiy rayon, L'govskiy rayon, Ryl'skiy rayon
Sub-basin area
122km²
Upstream area
16 701,4km²
Discharge
83,22m³/s
Mean elev.
158m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Свапа1666 km²
- Bassin de Платавка176 km²
3 dept-equivalent regions (GADM L2)
- L'govskiy rayonKursk · Russia70.0 km²57.2% of basin
- Ryl'skiy rayonKursk · Russia51.8 km²42.3% of basin
- Khomutovskiy rayonKursk · Russia0.6 km²0.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
550 distinct species · 1 387 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 : 33 espèces reliées par 76 interactions GloBI sur 5 types (connectance 8.8%, filtre Serrano α=0.2). 9 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°
6,2°C
Annual rain
605mm
Moisture idx (CMI)
-0,17
Runoff
138mm/an
PET
728mm
AET
508mm
Mean slope
1,1°
Water table
116cm
Forest
47%
Crops
33%
Urban
0%
Protected
34%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)