HydroBASINS lev08 watershed · #7080827500
Bassin de Río Grande de Santiago
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 6 administrative regions : Ahualulco de Mercado, Amatitán, Hostotipaquillo, Magdalena, San Juanito de Escobedo +1
Sub-basin area
645,6km²
Upstream area
82 260,5km²
Discharge
184,59m³/s
Mean elev.
1 300m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
6 dept-equivalent regions (GADM L2)
- 408.0 km²63.4% of basin
- 121.0 km²18.8% of basin
- 81.3 km²12.6% of basin
- 28.5 km²4.4% of basin
- 3.3 km²0.5% of basin
- 1.7 km²0.3% of basin
1 intersecting protected areas
Natural Resources Protection Area
60.97 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 149 distinct species · 13 952 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Río Grande de Santiago : 27 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 78 interactions GloBI sur 5 types (connectance 7.9%, filtre Serrano α=0.2). 18 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°
21,3°C
Annual rain
933mm
Moisture idx (CMI)
-0,49
Runoff
127mm/an
PET
1 846mm
AET
787mm
Mean slope
12,2°
Water table
582cm
Forest
80%
Crops
18%
Urban
2%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)