HydroBASINS lev08 watershed · #2080458980
Bassin de la Rouvre
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 : Calvados, Orne
Sub-basin area
302,5km²
Upstream area
302,5km²
Discharge
5,5m³/s
Mean elev.
221m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 303.4 km²100.0% of basin
- 0.0 km²0.0% of basin
47 communes (GADM L5)Available for FRA, RWA
- Bellou-en-Houlme34.17 km²87% commune
- Le Ménil-de-Briouze20.67 km²97% commune
- Briouze17.68 km²100% commune
- La Carneille16.07 km²100% commune
- Athis-de-l'Orne14.87 km²45% commune
- Sainte-Honorine-la-Guillaume13.76 km²92% commune
- Saint-Hilaire-de-Briouze12.46 km²88% commune
- Lonlay-le-Tesson12.39 km²99% commune
- Le Grais12.20 km²100% commune
- Beauvain11.40 km²88% commune
- Sainte-Honorine-la-Chardonne11.30 km²75% commune
- Durcet9.56 km²100% commune
- Saint-Georges-d'Annebecq8.95 km²97% commune
- Saint-André-de-Briouze8.54 km²71% commune
- Sainte-Opportune8.50 km²100% commune
- Craménil8.49 km²100% commune
- Faverolles8.32 km²77% commune
- Pointel7.48 km²100% commune
- Lignou7.45 km²100% commune
- Ronfeugerai6.47 km²100% commune
- Ségrie-Fontaine6.28 km²100% commune
- Taillebois5.68 km²100% commune
- La Lande-Saint-Siméon5.53 km²100% commune
- Bréel3.91 km²99% commune
- Ménil-Hubert-sur-Orne3.61 km²33% commune
- La Forêt-Auvray3.40 km²31% commune
- Notre-Dame-du-Rocher3.40 km²100% commune
- Chênedouit3.34 km²38% commune
- Rânes3.01 km²9% commune
- Berjou2.73 km²32% commune
- Les Tourailles2.41 km²100% commune
- Landigou2.16 km²38% commune
- Saint-Philbert-sur-Orne1.78 km²30% commune
- Saint-Maurice-du-Désert1.59 km²15% commune
- Saires-la-Verrerie1.04 km²12% commune
- Les Yveteaux0.66 km²11% commune
- La Chaux0.46 km²9% commune
- Flers0.41 km²2% commune
- La Ferté-Macé0.30 km²1% commune
- La Sauvagère0.30 km²1% commune
- Cahan0.28 km²5% commune
- Magny-le-Désert0.15 km²0% commune
- La Selle-la-Forge0.15 km²2% commune
- La Ferrière-aux-Étangs0.08 km²1% commune
- Montreuil-au-Houlme0.05 km²1% commune
- La Coulonche0.02 km²0% commune
- Le Mesnil-Villement0.00 km²0% commune
7 intersecting protected areas
Normandie-Maine
IUCN VRegional Nature Park
14.18 km² overlap
Vallée de l'Orne et ses affluents
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
3.77 km² overlap
La Rouvre Et Ses Affluents
IUCN IVBiotope Protection Order
3.23 km² overlap
Marais du Grand Hazé
IUCN IVNatural habitats protection Order
1.72 km² overlap
Marais du Grand Hazé
IUCN IVBiotope Protection Order
1.72 km² overlap
Marais du Grand Hazé
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
1.67 km² overlap
Haute vallée de l'Orne et affluents
IUCN Not ReportedSpecial Areas of Conservation (Habitats Directive)
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 531 distinct species · 39 897 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Rouvre : 23 espèces reliées par 79 interactions GloBI sur 5 types (connectance 14.1%, 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°
9,8°C
Annual rain
763mm
Moisture idx (CMI)
0,00
Runoff
570mm/an
PET
765mm
AET
564mm
Mean slope
2,2°
Water table
166cm
Forest
0%
Crops
22%
Urban
0%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)