HydroBASINS lev08 watershed · #7080831510
Bassin de Río Lerma
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 : Cortazar, Jaral del Progreso, Salamanca, Salvatierra, Valle de Santiago
Sub-basin area
635km²
Upstream area
12 073,2km²
Discharge
45,37m³/s
Mean elev.
1 791m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 4 basins
- Bassin de Río Grande3959 km²
- Bassin de Río Uriangato1185 km²
- Bassin de Dren de Chapultepec942 km²
- Bassin de Río Lerma208 km²
5 dept-equivalent regions (GADM L2)
- Valle de SantiagoGuanajuato · México262.8 km²41.5% of basin
- 133.7 km²21.1% of basin
- Jaral del ProgresoGuanajuato · México129.5 km²20.5% of basin
- 107.2 km²16.9% of basin
- SalvatierraGuanajuato · México0.0 km²0.0% of basin
1 intersecting protected areas
Cerros El Culiacán y La Gavia
IUCN Not ReportedSustainable Use Area
88.14 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
912 distinct species · 9 886 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Lerma : 24 espèces reliées par 101 interactions GloBI sur 4 types (connectance 12.9%, filtre Serrano α=0.2). 16 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°
19,0°C
Annual rain
686mm
Moisture idx (CMI)
-0,60
Runoff
37mm/an
PET
1 717mm
AET
579mm
Mean slope
2,9°
Water table
272cm
Forest
89%
Crops
65%
Urban
9%
Protected
24%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)