HydroBASINS lev08 watershed · #6080185550
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 8 administrative regions across 2 countries : Barbacoas, Cumbal, Espejo, Mira, Ricaurte +3
Sub-basin area
1 604,9km²
Upstream area
1 605,2km²
Discharge
78,96m³/s
Mean elev.
1 544m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
8 dept-equivalent regions (GADM L2)
- 1153.0 km²72.2% of basin
- 235.2 km²14.7% of basin
- 87.6 km²5.5% of basin
- 71.4 km²4.5% of basin
- 50.2 km²3.1% of basin
- 0.2 km²0.0% of basin
- 0.1 km²0.0% of basin
- San LorenzoEsmeraldas · Ecuador0.0 km²0.0% of basin
5 intersecting protected areas
Drácula
IUCN Not ApplicableOther Effective Area-based Conservation Measure - OECM
25.49 km² overlap
Resguardo Nulpe Medio Alto Río San Juan
IUCN Not ApplicableIndigenous Reserve
6.90 km² overlap
Reserva Ecológica El Ángel
IUCN Not ReportedWetland of International Importance (Ramsar Site)
6.01 km² overlap
El Ángel
IUCN IbEcological Reserve
5.99 km² overlap
Cuenca Hidrográfica Rio Guáitara
IUCN Not ApplicableWatershed
1.48 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
4 362 distinct species · 39 819 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 : 14 espèces reliées par 23 interactions GloBI sur 3 types (connectance 11.0%, filtre Serrano α=0.2). 7 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°
18,7°C
Annual rain
2 615mm
Moisture idx (CMI)
0,35
Runoff
1 698mm/an
PET
1 360mm
AET
1 260mm
Mean slope
16,3°
Water table
496cm
Forest
61%
Crops
6%
Urban
0%
Protected
32%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)