HydroBASINS lev08 watershed · #2080450730
Bassin de l'Eure
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 : Eure, Eure-et-Loir, Yvelines
Sub-basin area
1 042,9km²
Upstream area
4 549,8km²
Discharge
41,13m³/s
Mean elev.
123m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Avre944 km²
- Bassin de la Blaise8 km²
3 dept-equivalent regions (GADM L2)
- 612.7 km²58.6% of basin
- 233.3 km²22.3% of basin
- 200.2 km²19.1% of basin
157 communes (GADM L5)Available for FRA, RWA
- Saint-Léger-en-Yvelines25.72 km²74% commune
- Boutigny-Prouais24.42 km²73% commune
- Abondant24.12 km²69% commune
- Bû23.29 km²100% commune
- Gambais22.96 km²99% commune
- Saint-André-de-l'Eure20.25 km²100% commune
- Gambaiseuil18.09 km²95% commune
- Rouvres16.13 km²100% commune
- Champigny-la-Futelaye15.62 km²100% commune
- Villiers-en-Désœuvre15.30 km²100% commune
- La Croix-Saint-Leufroy14.71 km²100% commune
- Mousseaux-Neuville14.51 km²100% commune
- Saint-Lubin-de-la-Haye14.40 km²100% commune
- Guainville14.33 km²100% commune
- Pacy-sur-Eure13.54 km²100% commune
- Marcilly-sur-Eure13.46 km²87% commune
- Sorel-Moussel13.22 km²100% commune
- Breuilpont12.60 km²100% commune
- Autheuil-Authouillet12.11 km²100% commune
- Berchères-sur-Vesgre11.76 km²96% commune
- Le Vieil-Évreux11.74 km²100% commune
- Le Plessis-Hébert11.45 km²100% commune
- Condé-sur-Vesgre11.38 km²100% commune
- La Couture-Boussey11.23 km²100% commune
- Houlbec-Cocherel11.18 km²95% commune
- Croth10.98 km²100% commune
- Goussainville10.95 km²100% commune
- Heudreville-sur-Eure10.78 km²75% commune
- Oulins10.73 km²100% commune
- Bourdonné10.58 km²100% commune
- Le Cormier10.53 km²100% commune
- Douains10.45 km²92% commune
- Houdan10.44 km²100% commune
- Adainville10.25 km²100% commune
- Garennes-sur-Eure10.20 km²100% commune
- Jouy-sur-Eure9.87 km²100% commune
- Bazainville9.68 km²82% commune
- Guichainville9.60 km²60% commune
- Saint-Ouen-Marchefroy9.39 km²100% commune
- Bréval8.90 km²77% commune
- Le Mesnil-Simon8.66 km²95% commune
- Ézy-sur-Eure8.64 km²100% commune
- Reuilly8.63 km²87% commune
- Merey8.63 km²100% commune
- Saint-Aquilin-de-Pacy8.61 km²100% commune
- Chambray8.50 km²100% commune
- Mouettes8.47 km²100% commune
- La Chaussée-d'Ivry8.42 km²100% commune
- Richebourg8.30 km²75% commune
- Miserey8.29 km²100% commune
- Caillouet-Orgeville8.15 km²100% commune
- Maulette8.06 km²100% commune
- Prey7.93 km²100% commune
- Gauciel7.91 km²100% commune
- Ivry-la-Bataille7.78 km²100% commune
- Neauphlette7.73 km²78% commune
- La Forêt-du-Parc7.72 km²100% commune
- Hécourt7.56 km²100% commune
- Anet7.53 km²100% commune
- Gilles7.53 km²100% commune
- Boisset-les-Prévanches7.20 km²100% commune
- Écardenville-sur-Eure7.16 km²100% commune
- Fontaine-sous-Jouy7.07 km²100% commune
- Garencières7.05 km²100% commune
- Saint-Aubin-sur-Gaillon6.94 km²36% commune
- Jumelles6.85 km²96% commune
- Le Val-David6.78 km²100% commune
- Chaignes6.56 km²100% commune
- Gressey6.54 km²95% commune
- Broué6.51 km²53% commune
- Saint-Vigor6.50 km²100% commune
- Serez6.42 km²100% commune
- Fresney6.32 km²100% commune
- Grandchamp6.09 km²100% commune
- Coudres5.90 km²37% commune
- Ménilles5.87 km²100% commune
- Cravent5.54 km²89% commune
- Bois-le-Roi5.48 km²100% commune
- Irreville5.39 km²100% commune
- Foucrainville5.35 km²100% commune
- Saint-Germain-de-Fresney5.33 km²100% commune
- Saint-Luc5.20 km²100% commune
- Les Authieux5.09 km²100% commune
- Lignerolles4.99 km²83% commune
- Hardencourt-Cocherel4.99 km²100% commune
- Neuilly4.93 km²100% commune
- Saussay4.80 km²100% commune
- Épieds4.77 km²100% commune
- L'Habit4.69 km²100% commune
- Bueil4.64 km²100% commune
- Saint-Vincent-des-Bois4.64 km²86% commune
- Chavigny-Bailleul4.46 km²24% commune
- Illiers-l'Évêque4.35 km²21% commune
- Quessigny4.28 km²100% commune
- Cierrey4.25 km²100% commune
- Boncourt4.20 km²100% commune
- Grossœuvre4.13 km²26% commune
- Gadencourt4.12 km²100% commune
- La Hauteville4.04 km²90% commune
- Saint-Illiers-le-Bois3.93 km²97% commune
- Saint-Julien-de-la-Liègue3.80 km²81% commune
- Boncourt3.79 km²100% commune
- Ailly3.71 km²24% commune
- Le Tartre-Gaudran3.69 km²81% commune
- Fains3.59 km²100% commune
- Fontaine-Heudebourg3.51 km²97% commune
- Bretagnolles3.49 km²100% commune
- La Boissière3.48 km²100% commune
- Havelu3.46 km²100% commune
- Serville3.46 km²62% commune
- Croisy-sur-Eure3.45 km²100% commune
- Saint-Laurent-des-Bois3.42 km²100% commune
- Villegats3.41 km²100% commune
- Cailly-sur-Eure3.40 km²100% commune
- Dannemarie3.40 km²100% commune
- Vaux-sur-Eure3.25 km²100% commune
- Aigleville3.23 km²100% commune
- La Chapelle-du-Bois-des-Faulx3.19 km²76% commune
- Saint-Georges-Motel3.13 km²64% commune
- Angerville-la-Campagne3.06 km²84% commune
- La Boissière-École2.99 km²12% commune
- Dardez2.77 km²97% commune
- Sassey2.76 km²65% commune
- La Trinité2.72 km²100% commune
- Sainte-Colombe-près-Vernon2.56 km²99% commune
- Champenard2.42 km²100% commune
- Blaru2.41 km²16% commune
- Champagne2.39 km²100% commune
- Rouvray2.28 km²100% commune
- Marchezais2.16 km²100% commune
- La Heunière2.10 km²76% commune
- Les Bréviaires1.91 km²10% commune
- Mondreville1.73 km²42% commune
- Chaufour-lès-Bonnières1.61 km²53% commune
- Les Pinthières1.18 km²30% commune
- Huest1.08 km²17% commune
- Boissets1.03 km²25% commune
- Acquigny0.93 km²5% commune
- Grosrouvre0.82 km²6% commune
- Le Boulay-Morin0.72 km²13% commune
- Montreuil0.67 km²10% commune
- Émalleville0.63 km²15% commune
- Longnes0.50 km²4% commune
- Fauville0.50 km²15% commune
- Tilly0.49 km²6% commune
- Arnières-sur-Iton0.42 km²3% commune
- Saint-Illiers-la-Ville0.39 km²6% commune
- Poigny-la-Forêt0.31 km²1% commune
- Tacoignières0.30 km²10% commune
- Évreux0.29 km²1% commune
- Villez-sous-Bailleul0.28 km²6% commune
- Millemont0.22 km²4% commune
- La Chapelle-Réanville0.19 km²2% commune
- Saint-Pierre-de-Bailleul0.11 km²2% commune
- Orgerus0.08 km²1% commune
- Lommoye0.08 km²1% commune
- Civry-la-Forêt0.01 km²0% commune
20 intersecting protected areas
Regional Nature Park
74.24 km² overlap
Massif de Rambouillet et zones humides proches
IUCN Not ReportedSpecial Protection Area (Birds Directive)
39.79 km² overlap
Vallée de l'Eure
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
14.42 km² overlap
Forêt de Rambouillet
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
14.09 km² overlap
Etang Neuf
IUCN IVForest Managed Biological Reserve
2.51 km² overlap
Vallée de l'Eure de Maintenon à Anet et vallons affluents
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.99 km² overlap
La Houssine
IUCN IVForest Managed Biological Reserve
1.54 km² overlap
Mare Au Vinaigre
IUCN IVForest Managed Biological Reserve
0.87 km² overlap
Vallée Des Cailles
IUCN IVRegional Nature Reserve
0.45 km² overlap
11 more protected areassorted by overlap area
Petit Produit Nord
IUCN IVForest Managed Biological Reserve
0.25 km² overlap
cotes de boncourt (les)
IUCN IVLand acquired by a regional conservatory of natural areas
0.06 km² overlap
Mare Aux Canets
IUCN IVForest Managed Biological Reserve
0.06 km² overlap
Parc D\'En Haut
IUCN IVForest Managed Biological Reserve
0.05 km² overlap
vallee des cailles (la)
IUCN IVLand acquired by a regional conservatory of natural areas
0.03 km² overlap
le fournet
IUCN IVLand acquired by a regional conservatory of natural areas
0.03 km² overlap
Ruisseau Billard
IUCN IVBiotope Protection Order
0.02 km² overlap
Etangs De Hollande
IUCN IVForest Managed Biological Reserve
0.02 km² overlap
cote de nantilly (la)
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
cote de montreuil (la)
IUCN IVLand acquired by a regional conservatory of natural areas
0.01 km² overlap
les coteaux d\'ezy
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
6 966 distinct species · 445 639 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 l'Eure : 24 espèces reliées par 105 interactions GloBI sur 6 types (connectance 18.7%, filtre Serrano α=0.2). 10 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°
10,2°C
Annual rain
626mm
Moisture idx (CMI)
-0,20
Runoff
324mm/an
PET
786mm
AET
526mm
Mean slope
1,7°
Water table
124cm
Forest
9%
Crops
53%
Urban
3%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)