HydroBASINS lev08 watershed · #7080828690
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 5 administrative regions : Amatitán, El Arenal, San Cristóbal de la Barranca, Tequila, Zapopan
Sub-basin area
812,4km²
Upstream area
81 315,8km²
Discharge
180,63m³/s
Mean elev.
1 467m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
5 dept-equivalent regions (GADM L2)
- 328.0 km²40.5% of basin
- 232.6 km²28.7% of basin
- 171.0 km²21.1% of basin
- 56.0 km²6.9% of basin
- 22.6 km²2.8% of basin
1 intersecting protected areas
Barranca del Río Santiago
IUCN Not ReportedMunicipal Park
86.72 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
739 distinct species · 1 734 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 51 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 : 33 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 119 interactions GloBI sur 4 types (connectance 8.6%, filtre Serrano α=0.2). 20 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°
20,2°C
Annual rain
947mm
Moisture idx (CMI)
-0,47
Runoff
127mm/an
PET
1 793mm
AET
800mm
Mean slope
13,0°
Water table
588cm
Forest
79%
Crops
22%
Urban
0%
Protected
11%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)