HydroBASINS lev08 watershed · #2080583750
Bassin du Trapel
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 : Aude
Sub-basin area
88,2km²
Upstream area
2 867,1km²
Discharge
48,36m³/s
Mean elev.
204m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de l'Aude1848 km²
- Bassin du Fresquel945 km²
19 communes (GADM L5)Available for FRA, RWA
- Aragon16.18 km²75% commune
- Carcassonne12.93 km²19% commune
- Conques-sur-Orbiel10.37 km²39% commune
- Montirat8.52 km²65% commune
- Fraisse-Cabardès6.25 km²83% commune
- Villemoustaussou5.97 km²46% commune
- Villardonnel5.95 km²35% commune
- Villegailhenc5.35 km²100% commune
- Trèbes4.63 km²26% commune
- Villedubert2.82 km²80% commune
- Palaja2.43 km²16% commune
- Berriac2.38 km²100% commune
- Pennautier1.68 km²9% commune
- Cuxac-Cabardès1.32 km²5% commune
- Villalier0.83 km²11% commune
- Mas-des-Cours0.33 km²4% commune
- Fontiès-d'Aude0.24 km²4% commune
- Brousses-et-Villaret0.12 km²1% commune
- Villefloure0.07 km²0% commune
1 intersecting protected areas
Corbières occidentales
IUCN Not ReportedSpecial Protection Area (Birds Directive)
5.47 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 387 distinct species · 31 214 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 du Trapel : 22 espèces + 4 bulles famille, 54 interactions GloBI documentées sur 3 types (connectance 16.6%, filtre Serrano α=0.2). Les 4 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
13,2°C
Annual rain
739mm
Moisture idx (CMI)
-0,24
Runoff
523mm/an
PET
967mm
AET
622mm
Mean slope
4,0°
Water table
165cm
Forest
18%
Crops
30%
Urban
13%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)