HydroBASINS lev08 watershed · #7080851820
Bassin de Tonala
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 5 administrative regions : Agua Dulce, Coatzacoalcos, Cárdenas, Huimanguillo, Moloacán
Sub-basin area
354,8km²
Upstream area
5 286,2km²
Discharge
188,58m³/s
Mean elev.
31m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Blasillo428 km²
- Bassin de Tonala26 km²
5 dept-equivalent regions (GADM L2)
- Agua DulceVeracruz · México228.1 km²64.5% of basin
- 97.3 km²27.5% of basin
- CoatzacoalcosVeracruz · México16.1 km²4.5% of basin
- 8.2 km²2.3% of basin
- 2.7 km²0.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 142 distinct species · 6 428 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Tonala : 20 espèces reliées par 33 interactions GloBI sur 4 types (connectance 7.6%, 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°
25,5°C
Annual rain
2 356mm
Moisture idx (CMI)
0,33
Runoff
1 521mm/an
PET
1 574mm
AET
1 311mm
Mean slope
1,1°
Water table
46cm
Forest
29%
Crops
18%
Urban
7%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)