HydroBASINS lev08 watershed · #7080823010
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 4 administrative regions : Del Nayar, La Yesca, Santa María del Oro, Tepic
Sub-basin area
1 220,9km²
Upstream area
102 529,7km²
Discharge
234,56m³/s
Mean elev.
754m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
4 dept-equivalent regions (GADM L2)
- 545.6 km²44.8% of basin
- 408.5 km²33.6% of basin
- 224.3 km²18.4% of basin
- 39.2 km²3.2% of basin
1 intersecting protected areas
Natural Resources Protection Area
755.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 193 distinct species · 3 963 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 46 interactions GloBI sur 4 types (connectance 10.6%, filtre Serrano α=0.2). 8 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°
22,7°C
Annual rain
1 057mm
Moisture idx (CMI)
-0,41
Runoff
340mm/an
PET
1 782mm
AET
864mm
Mean slope
13,6°
Water table
554cm
Forest
71%
Crops
7%
Urban
0%
Protected
62%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)