HydroBASINS lev08 watershed · #6080034060
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 2 administrative regions : Buenaventura, El Litoral del San Juan
Sub-basin area
401,2km²
Upstream area
15 396,4km²
Discharge
1 989,34m³/s
Mean elev.
33m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Río Calima1365 km²
- Bassin de Río San Juan363 km²
2 dept-equivalent regions (GADM L2)
- 209.3 km²52.4% of basin
- 190.1 km²47.6% of basin
2 intersecting protected areas
Unidad Ambiental Costera Complejo Malaga Buenaventura
IUCN Not ApplicablePOMIUAC
56.13 km² overlap
Integrated Management Regional Districts
0.17 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
344 distinct species · 1 094 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 4 types (connectance 5.4%, filtre Serrano α=0.2). 5 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°
25,8°C
Annual rain
7 340mm
Moisture idx (CMI)
0,81
Runoff
5 354mm/an
PET
1 405mm
AET
1 405mm
Mean slope
1,5°
Water table
40cm
Forest
85%
Crops
0%
Urban
0%
Protected
7%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)