HydroBASINS lev08 watershed · #2080481900
Bassin de la Sarthe
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 : Sarthe
Sub-basin area
199,5km²
Upstream area
2 879,1km²
Discharge
25,21m³/s
Mean elev.
88m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de la Sarthe2151 km²
- Bassin de Orne Saosnoise529 km²
1 dept-equivalent regions (GADM L2)
- 200.1 km²100.0% of basin
32 communes (GADM L5)Available for FRA, RWA
- Neuville-sur-Sarthe21.25 km²93% commune
- Domfront-en-Champagne20.88 km²98% commune
- La Bazoge18.21 km²78% commune
- Le Mans13.63 km²26% commune
- Aigné12.58 km²100% commune
- La Milesse10.66 km²100% commune
- Trangé10.49 km²92% commune
- Degré9.69 km²97% commune
- Saint-Saturnin9.49 km²100% commune
- Joué-l'Abbé9.44 km²92% commune
- Sargé-lès-le-Mans7.95 km²55% commune
- Lavardin7.71 km²100% commune
- La Chapelle-Saint-Aubin6.14 km²100% commune
- La Chapelle-Saint-Fray5.98 km²94% commune
- La Quinte5.84 km²67% commune
- La Guierche5.26 km²67% commune
- Saint-Pavace4.87 km²100% commune
- Souillé4.02 km²97% commune
- Coulaines3.96 km²100% commune
- Cures3.81 km²33% commune
- Chaufour-Notre-Dame1.75 km²15% commune
- Souligné-sous-Ballon1.72 km²14% commune
- Savigné-l'Évêque1.36 km²5% commune
- Conlie1.34 km²8% commune
- Montbizot0.67 km²6% commune
- Sainte-Jamme-sur-Sarthe0.54 km²7% commune
- Mézières-sous-Lavardin0.45 km²3% commune
- Courcebœufs0.33 km²2% commune
- Sainte-Sabine-sur-Longève0.03 km²0% commune
- Yvré-l'Évêque0.01 km²0% commune
- Rouillon0.00 km²0% commune
- Coulans-sur-Gée0.00 km²0% commune
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 469 distinct species · 61 143 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 Sarthe : 23 espèces reliées par 79 interactions GloBI sur 6 types (connectance 15.0%, 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°
10,8°C
Annual rain
705mm
Moisture idx (CMI)
-0,17
Runoff
235mm/an
PET
850mm
AET
572mm
Mean slope
2,1°
Water table
151cm
Forest
0%
Crops
52%
Urban
16%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)