HydroBASINS lev08 watershed · #2080470760
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 : Seine-et-Marne
Sub-basin area
89,2km²
Upstream area
21 147,2km²
Discharge
158,04m³/s
Mean elev.
90m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Seine1672 km²
- Bassin de l'Yonne558 km²
1 dept-equivalent regions (GADM L2)
- 89.5 km²100.0% of basin
17 communes (GADM L5)Available for FRA, RWA
- La Grande-Paroisse28.30 km²97% commune
- Vernou-la-Celle-sur-Seine21.81 km²97% commune
- Varennes-sur-Seine8.74 km²85% commune
- Ville-Saint-Jacques6.71 km²64% commune
- Forges4.46 km²34% commune
- Esmans4.44 km²26% commune
- Noisy-Rudignon3.59 km²81% commune
- Montereau-Fault-Yonne3.28 km²36% commune
- Écuelles2.33 km²20% commune
- Machault1.85 km²11% commune
- Saint-Mammès1.70 km²83% commune
- Champagne-sur-Seine1.21 km²17% commune
- Montarlot0.82 km²17% commune
- Dormelles0.16 km²1% commune
- Flagy0.04 km²1% commune
- Thoury-Férottes0.03 km²0% commune
- Veneux-les-Sablons0.01 km²0% commune
12 intersecting protected areas
Bassée et plaines adjacentes
IUCN Not ReportedSpecial Protection Area (Birds Directive)
8.56 km² overlap
Biotope Protection Order
0.30 km² overlap
Biotope Protection Order
0.13 km² overlap
La Noue Notre-Dame
IUCN IVBiotope Protection Order
0.10 km² overlap
grand marais
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
coteau de la grande paroisse
IUCN IVLand acquired by a regional conservatory of natural areas
0.04 km² overlap
montagne creuse
IUCN IVLand acquired by a regional conservatory of natural areas
0.02 km² overlap
bords de seine vernou
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
Regional Nature Reserve
0.01 km² overlap
3 more protected areassorted by overlap area
orpheline4
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
orpheline3
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
orpheline7
IUCN IVLand acquired by a regional conservatory of natural areas
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 138 distinct species · 123 035 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 149 interactions GloBI sur 6 types (connectance 28.2%, filtre Serrano α=0.2). 12 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°
10,9°C
Annual rain
641mm
Moisture idx (CMI)
-0,25
Runoff
203mm/an
PET
851mm
AET
540mm
Mean slope
1,7°
Water table
192cm
Forest
18%
Crops
49%
Urban
16%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)