HydroBASINS lev08 watershed · #2080455380
Bassin de la Vaucouleurs
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 : Eure-et-Loir, Yvelines
Sub-basin area
183,9km²
Upstream area
183,9km²
Discharge
1,43m³/s
Mean elev.
122m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 183.5 km²99.5% of basin
- 0.9 km²0.5% of basin
52 communes (GADM L5)Available for FRA, RWA
- Orgerus14.37 km²99% commune
- Dammartin-en-Serve13.83 km²100% commune
- Longnes13.46 km²96% commune
- Septeuil9.54 km²100% commune
- Civry-la-Forêt9.27 km²100% commune
- Montchauvet8.29 km²100% commune
- Flexanville7.67 km²86% commune
- Tilly7.52 km²94% commune
- Prunay-le-Temple6.55 km²100% commune
- Arnouville-lès-Mantes6.31 km²63% commune
- Saint-Martin-des-Champs6.20 km²100% commune
- Orvilliers5.67 km²100% commune
- Béhoust4.50 km²82% commune
- Villette4.34 km²100% commune
- Rosay4.33 km²100% commune
- Mantes-la-Ville4.25 km²67% commune
- Flacourt4.22 km²100% commune
- Boinvilliers3.89 km²100% commune
- Mulcent3.81 km²100% commune
- Vert3.72 km²100% commune
- Breuil-Bois-Robert3.39 km²85% commune
- Boissets3.12 km²75% commune
- Favrieux3.02 km²96% commune
- Tacoignières2.80 km²90% commune
- Richebourg2.77 km²25% commune
- Le Tertre-Saint-Denis2.74 km²97% commune
- Osmoy2.54 km²100% commune
- Soindres2.54 km²45% commune
- Mondreville2.41 km²58% commune
- Auffreville-Brasseuil2.28 km²100% commune
- Bazainville2.14 km²18% commune
- Neauphlette1.92 km²19% commune
- Courgent1.92 km²100% commune
- Millemont1.31 km²23% commune
- Magnanville1.27 km²33% commune
- Flins-Neuve-Église1.04 km²100% commune
- Goupillières0.96 km²17% commune
- Perdreauville0.96 km²8% commune
- Le Mesnil-Simon0.47 km²5% commune
- Bréval0.46 km²4% commune
- Berchères-sur-Vesgre0.45 km²4% commune
- Hargeville0.45 km²6% commune
- Fontenay-Mauvoisin0.43 km²13% commune
- Mantes-la-Jolie0.37 km²4% commune
- Gressey0.34 km²5% commune
- Ménerville0.21 km²6% commune
- Boissy-Mauvoisin0.16 km²3% commune
- Garancières0.16 km²2% commune
- Limay0.07 km²1% commune
- Saint-Ouen-Marchefroy0.00 km²0% commune
- Guerville0.00 km²0% commune
- Villiers-le-Mahieu0.00 km²0% commune
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 382 distinct species · 109 794 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 Vaucouleurs : 30 espèces reliées par 97 interactions GloBI sur 6 types (connectance 18.4%, filtre Serrano α=0.2). 3 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°
10,3°C
Annual rain
630mm
Moisture idx (CMI)
-0,20
Runoff
246mm/an
PET
791mm
AET
531mm
Mean slope
2,0°
Water table
172cm
Forest
2%
Crops
58%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)