HydroBASINS lev08 watershed · #2080479200
Bassin de la Seine
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 1 administrative regions : Aube
Sub-basin area
16,3km²
Upstream area
1 463,1km²
Discharge
11,39m³/s
Mean elev.
215m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Seine758 km²
- Bassin de la Laignes689 km²
5 communes (GADM L5)Available for FRA, RWA
- Polisot7.58 km²71% commune
- Bar-sur-Seine5.56 km²20% commune
- Polisy3.13 km²28% commune
- Merrey-sur-Arce0.09 km²1% commune
- Celles-sur-Ource0.01 km²0% commune
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 363 distinct species · 17 892 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 la Seine : 27 espèces reliées par 59 interactions GloBI sur 4 types (connectance 12.7%, filtre Serrano α=0.2). 4 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°
10,1°C
Annual rain
719mm
Moisture idx (CMI)
-0,14
Runoff
235mm/an
PET
833mm
AET
581mm
Mean slope
4,1°
Water table
351cm
Forest
0%
Crops
67%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)