HydroBASINS lev08 watershed · #7080828730
Bassin de Arroyo Lerma 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, El Arenal, Tequila, Teuchitlán +1
Sub-basin area
299,2km²
Upstream area
299,2km²
Discharge
1,36m³/s
Mean elev.
1 542m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 122.7 km²41.1% of basin
- 88.2 km²29.6% of basin
- 56.0 km²18.8% of basin
- 19.3 km²6.5% of basin
- 10.8 km²3.6% of basin
- 1.5 km²0.5% of basin
3 intersecting protected areas
La Primavera
IUCN VIFlora and Fauna Protection Area
40.68 km² overlap
La Primavera
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
40.68 km² overlap
Natural Resources Protection Area
22.38 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 336 distinct species · 41 069 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 Arroyo Lerma Santiago : 28 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 60 interactions GloBI sur 4 types (connectance 8.1%, filtre Serrano α=0.2). 11 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°
19,5°C
Annual rain
991mm
Moisture idx (CMI)
-0,43
Runoff
144mm/an
PET
1 739mm
AET
835mm
Mean slope
5,8°
Water table
447cm
Forest
69%
Crops
48%
Urban
8%
Protected
21%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)