HydroBASINS lev08 watershed · #7080801310
Bassin de Río 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 : Cadereyta Jiménez, General Terán, Los Ramones, Montemorelos
Sub-basin area
1 104,3km²
Upstream area
4 498,9km²
Discharge
6,67m³/s
Mean elev.
301m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Ramos930 km²
- Bassin de Río Santa Catarina4 km²
4 dept-equivalent regions (GADM L2)
- 334.4 km²30.3% of basin
- 268.1 km²24.3% of basin
- 261.2 km²23.7% of basin
- 238.4 km²21.6% of basin
2 intersecting protected areas
Cumbres de Monterrey
IUCN IINational Park
6.65 km² overlap
Cumbres de Monterrey
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
6.65 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
955 distinct species · 2 974 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 52 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 San Juan : 41 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 82 interactions GloBI sur 4 types (connectance 6.0%, 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°
22,7°C
Annual rain
752mm
Moisture idx (CMI)
-0,57
Runoff
60mm/an
PET
1 732mm
AET
635mm
Mean slope
1,1°
Water table
138cm
Forest
43%
Crops
59%
Urban
0%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)