HydroBASINS lev08 watershed · #7080833760
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 10 administrative regions : Acambay de Ruíz Castañeda, Aculco, Chapa de Mota, Huichapan, Jilotepec +5
Sub-basin area
790,9km²
Upstream area
790,9km²
Discharge
1,88m³/s
Mean elev.
2 527m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
10 dept-equivalent regions (GADM L2)
- 217.6 km²27.6% of basin
- 155.6 km²19.7% of basin
- 134.1 km²17.0% of basin
- 117.4 km²14.9% of basin
- 101.8 km²12.9% of basin
- San Juan del RíoQuerétaro · México55.3 km²7.0% of basin
- 2.8 km²0.3% of basin
- 1.8 km²0.2% of basin
2 moreFull L2 list
- Huichapan1.3 km² · 0.2%
- Chapa de Mota0.9 km² · 0.1%
4 intersecting protected areas
Santuario del Agua Sistema Hidrológico Presa Huapango
IUCN Not ReportedState Park
685.37 km² overlap
El Oso Bueno
IUCN Not ReportedState Park
10.41 km² overlap
Santuario del Agua y Forestal Subcuenca Tributaria Arroyo Sila
IUCN Not ReportedState Park
1.19 km² overlap
Santuario del Agua Presa Ñado
IUCN Not ReportedState Park
0.61 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
909 distinct species · 4 691 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 128 interactions GloBI sur 4 types (connectance 14.9%, filtre Serrano α=0.2). 17 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°
14,7°C
Annual rain
768mm
Moisture idx (CMI)
-0,49
Runoff
85mm/an
PET
1 516mm
AET
649mm
Mean slope
3,9°
Water table
380cm
Forest
24%
Crops
42%
Urban
3%
Protected
88%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)