HydroBASINS lev08 watershed · #7080831640
Bassin de Rio San Juan
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 : Huichapan, San Juan del Río, Tecozautla, Tequisquiapan
Sub-basin area
311,8km²
Upstream area
2 978,2km²
Discharge
6,33m³/s
Mean elev.
2 045m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Dren El Caracol1060 km²
- Bassin de Rio San Juan204 km²
4 dept-equivalent regions (GADM L2)
- San Juan del RíoQuerétaro · México178.5 km²57.4% of basin
- TequisquiapanQuerétaro · México125.8 km²40.5% of basin
- 6.1 km²2.0% of basin
- 0.5 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 130 distinct species · 29 429 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Rio San Juan : 21 espèces reliées par 66 interactions GloBI sur 4 types (connectance 12.5%, filtre Serrano α=0.2). 12 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°
17,1°C
Annual rain
571mm
Moisture idx (CMI)
-0,66
Runoff
48mm/an
PET
1 669mm
AET
482mm
Mean slope
4,5°
Water table
463cm
Forest
48%
Crops
34%
Urban
18%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)