HydroBASINS lev08 watershed · #2080385810
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 5 administrative regions : Bol'shesoldatskiy rayon, Kurchatovskiy rayon, L'gov, L'govskiy rayon, Sudzhanskiy rayon
Sub-basin area
721,4km²
Upstream area
10 783,5km²
Discharge
54,34m³/s
Mean elev.
182m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Реут1016 km²
- Bassin de Сейм703 km²
5 dept-equivalent regions (GADM L2)
- L'govskiy rayonKursk · Russia364.7 km²50.4% of basin
- Kurchatovskiy rayonKursk · Russia318.7 km²44.0% of basin
- 23.0 km²3.2% of basin
- Bol'shesoldatskiy rayonKursk · Russia12.6 km²1.7% of basin
- Sudzhanskiy rayonKursk · Russia5.1 km²0.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
736 distinct species · 3 396 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 : 23 espèces reliées par 86 interactions GloBI sur 3 types (connectance 17.3%, 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°
6,0°C
Annual rain
609mm
Moisture idx (CMI)
-0,16
Runoff
141mm/an
PET
725mm
AET
509mm
Mean slope
1,7°
Water table
170cm
Forest
5%
Crops
61%
Urban
4%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)