HydroBASINS lev08 watershed · #2080495400
Bassin de la Mayenne
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 : Maine-et-Loire
Sub-basin area
139,1km²
Upstream area
5 843,8km²
Discharge
66,56m³/s
Mean elev.
47m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Oudon1489 km²
- Bassin de la Mayenne881 km²
1 dept-equivalent regions (GADM L2)
- 139.5 km²100.0% of basin
19 communes (GADM L5)Available for FRA, RWA
- Grez-Neuville26.29 km²95% commune
- Feneu24.55 km²95% commune
- Sceaux-d'Anjou14.91 km²84% commune
- Pruillé13.14 km²100% commune
- Montreuil-Juigné12.98 km²92% commune
- La Membrolle-sur-Longuenée9.52 km²95% commune
- Cantenay-Épinard8.40 km²51% commune
- Le Plessis-Macé7.62 km²91% commune
- Angers5.69 km²13% commune
- Avrillé5.63 km²36% commune
- Thorigné-d'Anjou4.21 km²25% commune
- Écuillé2.74 km²23% commune
- Brain-sur-Longuenée2.28 km²10% commune
- Querré0.95 km²8% commune
- Soulaire-et-Bourg0.41 km²2% commune
- La Meignanne0.11 km²0% commune
- Le Lion-d'Angers0.04 km²0% commune
- Saint-Clément-de-la-Place0.01 km²0% commune
- Champteussé-sur-Baconne0.01 km²0% commune
3 intersecting protected areas
Special Areas of Conservation (Habitats Directive)
11.44 km² overlap
Basses vallées angevines et prairies de la Baumette
IUCN Not ReportedSpecial Protection Area (Birds Directive)
8.65 km² overlap
Basses Vallées Angevines
IUCN Not ReportedWetland of International Importance (Ramsar Site)
8.14 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 444 distinct species · 118 269 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Mayenne : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 101 interactions GloBI sur 6 types (connectance 16.0%, 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°
11,4°C
Annual rain
661mm
Moisture idx (CMI)
-0,23
Runoff
228mm/an
PET
860mm
AET
555mm
Mean slope
1,3°
Water table
164cm
Forest
0%
Crops
51%
Urban
9%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)