HydroBASINS lev08 watershed · #7080832420
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 10 administrative regions : Chapala, Ixtlahuacán de los Membrillos, Jocotepec, Juanacatlán, Ocotlán +5
Sub-basin area
838,3km²
Upstream area
46 613,4km²
Discharge
97,33m³/s
Mean elev.
1 673m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
10 dept-equivalent regions (GADM L2)
- 297.0 km²35.5% of basin
- 188.9 km²22.6% of basin
- 123.1 km²14.7% of basin
- 72.7 km²8.7% of basin
- 50.4 km²6.0% of basin
- 49.0 km²5.9% of basin
- 33.9 km²4.1% of basin
- 19.3 km²2.3% of basin
2 moreFull L2 list
- Tlajomulco de Zúñiga1.5 km² · 0.2%
- Tototlán0.0 km² · 0.0%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 548 distinct species · 10 184 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 : 28 espèces reliées par 65 interactions GloBI sur 4 types (connectance 9.2%, 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°
19,1°C
Annual rain
825mm
Moisture idx (CMI)
-0,51
Runoff
114mm/an
PET
1 701mm
AET
696mm
Mean slope
6,1°
Water table
457cm
Forest
63%
Crops
35%
Urban
5%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)