HydroBASINS lev08 watershed · #2080466040
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 2 administrative regions : Eure-et-Loir, Orne
Sub-basin area
948,4km²
Upstream area
948,4km²
Discharge
7,29m³/s
Mean elev.
185m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 877.7 km²92.3% of basin
- 73.6 km²7.7% of basin
100 communes (GADM L5)Available for FRA, RWA
- Sours31.06 km²94% commune
- Champrond-en-Gâtine27.80 km²80% commune
- Le Favril24.45 km²100% commune
- Pontgouin24.21 km²96% commune
- Chuisnes23.51 km²100% commune
- Dammarie22.24 km²68% commune
- Neuilly-sur-Eure21.72 km²100% commune
- Saint-Arnoult-des-Bois21.06 km²100% commune
- Berchères-les-Pierres20.70 km²99% commune
- Saint-Éliph20.66 km²85% commune
- Amilly19.90 km²100% commune
- Bailleau-l'Évêque19.61 km²97% commune
- Saint-Aubin-des-Bois18.26 km²100% commune
- Coltainville18.13 km²100% commune
- Chartres17.40 km²100% commune
- Fontaine-Simon16.92 km²100% commune
- Saint-Prest16.42 km²98% commune
- Saint-Georges-sur-Eure15.76 km²100% commune
- La Lande-sur-Eure15.58 km²98% commune
- Nogent-le-Phaye14.99 km²100% commune
- Fontaine-la-Guyon14.49 km²100% commune
- Saint-Luperce14.47 km²100% commune
- Fontenay-sur-Eure13.82 km²100% commune
- Orrouer13.19 km²100% commune
- Jouy12.94 km²100% commune
- Manou12.92 km²100% commune
- Fruncé12.76 km²75% commune
- Ollé12.42 km²95% commune
- Mainvilliers12.04 km²100% commune
- Billancelles11.81 km²100% commune
- Les Menus11.75 km²100% commune
- Champseru11.74 km²79% commune
- Le Thieulin11.74 km²100% commune
- Gellainville11.63 km²100% commune
- Mittainvilliers11.56 km²100% commune
- Courville-sur-Eure11.46 km²100% commune
- Belhomert-Guéhouville11.30 km²100% commune
- Digny10.88 km²27% commune
- Meaucé10.81 km²94% commune
- Saint-Maurice-Saint-Germain10.41 km²92% commune
- Mignières10.25 km²80% commune
- Houville-la-Branche10.18 km²72% commune
- Landelles9.98 km²100% commune
- Friaize9.96 km²100% commune
- Ver-lès-Chartres9.67 km²100% commune
- Senonches9.46 km²15% commune
- Nogent-sur-Eure9.38 km²100% commune
- Favières9.33 km²73% commune
- Thivars9.10 km²100% commune
- Saint-Piat9.08 km²80% commune
- Gasville-Oisème8.89 km²100% commune
- Vaupillon8.70 km²67% commune
- Theuville8.21 km²34% commune
- Saint-Germain-le-Gaillard8.10 km²100% commune
- Chartainvilliers7.88 km²87% commune
- Lèves7.59 km²100% commune
- Chauffours7.51 km²100% commune
- La Loupe7.34 km²100% commune
- Umpeau7.28 km²62% commune
- Morancez6.90 km²100% commune
- Corancez6.63 km²100% commune
- Soulaires6.06 km²100% commune
- Lucé5.89 km²100% commune
- Bailleau-le-Pin5.69 km²33% commune
- Le Coudray5.60 km²100% commune
- Meslay-le-Grenet5.55 km²61% commune
- Dangers5.55 km²75% commune
- Champhol5.18 km²100% commune
- Moulicent5.13 km²15% commune
- Moutiers-au-Perche4.96 km²15% commune
- Le Pas-Saint-l'Homer4.58 km²49% commune
- Bailleau-Armenonville4.48 km²25% commune
- Luisant4.24 km²100% commune
- Barjouville4.23 km²100% commune
- Longny-au-Perche4.14 km²10% commune
- Thimert-Gâtelles4.07 km²9% commune
- Cintray3.75 km²100% commune
- Saint-Denis-des-Puits3.74 km²27% commune
- Mévoisins3.12 km²72% commune
- Saint-Victor-de-Buthon2.96 km²11% commune
- Poisvilliers2.89 km²26% commune
- Le Mage2.80 km²11% commune
- Montireau2.66 km²25% commune
- La Ferté-Vidame2.25 km²6% commune
- Vérigny2.09 km²16% commune
- Cernay1.88 km²23% commune
- Bretoncelles1.70 km²4% commune
- Les Corvées-les-Yys1.36 km²10% commune
- Berchères-Saint-Germain1.28 km²4% commune
- Marchainville1.24 km²6% commune
- Briconville1.22 km²19% commune
- Ardelles1.11 km²11% commune
- Marchéville1.09 km²8% commune
- Fresnay-le-Gilmert0.86 km²15% commune
- Bouglainval0.86 km²6% commune
- Pézy0.50 km²8% commune
- Yermenonville0.35 km²7% commune
- Sandarville0.18 km²2% commune
- Prunay-le-Gillon0.06 km²0% commune
- La Bourdinière-Saint-Loup0.02 km²0% commune
8 intersecting protected areas
Perche
IUCN VRegional Nature Park
214.75 km² overlap
Forêts et étangs du Perche
IUCN Not ReportedSpecial Protection Area (Birds Directive)
97.15 km² overlap
Forets, etangs et tourbieres du Haut-Perche
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
10.02 km² overlap
Arc forestier du Perche d'Eure-et-Loir
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.78 km² overlap
Marais De Boizard
IUCN IVBiotope Protection Order
0.69 km² overlap
Vallée de l'Eure de Maintenon à Anet et vallons affluents
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.30 km² overlap
Tourbière Des Froux
IUCN IVForest Managed Biological Reserve
0.08 km² overlap
fourneau (le)
IUCN IVLand acquired by a regional conservatory of natural areas
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
3 897 distinct species · 290 131 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 : 31 espèces reliées par 116 interactions GloBI sur 5 types (connectance 13.5%, filtre Serrano α=0.2). 11 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
653mm
Moisture idx (CMI)
-0,19
Runoff
251mm/an
PET
804mm
AET
543mm
Mean slope
0,9°
Water table
70cm
Forest
2%
Crops
55%
Urban
6%
Protected
21%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)