Fleuve· 99 segments
Río San Juan
Crosses 6 administrative regions : Los Chiles, Pococí, San Carlos, San Juan del Norte, Sarapiquí
Total length
3 062km
Max discharge
1 044,1m³/s
Max Strahler
7
Segments matched
99
River geography6 admin regions · 0 communes
6 administrative regions crossed (GADM L2)
- San CarlosRío San Juan · Nicaragua129.6 kmin this dpt
- San Juan del NorteRío San Juan · Nicaragua70.2 kmin this dpt
- SarapiquíHeredia · Costa Rica30.9 kmin this dpt
- San CarlosAlajuela · Costa Rica17.8 kmin this dpt
- PococíLimón · Costa Rica1.1 kmin this dpt
- Los ChilesAlajuela · Costa Rica0.0 kmin this dpt
12 intersecting protected areas
Reserva de Biosfera Río San Juan Nicaragua
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Agua y Paz
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
Río Indio Maíz
IUCN IaBiological Reserve
Humedal Caribe Noreste
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Barra del Colorado
IUCN VINational Wildlife Refuge
Corredor Fronterizo
IUCN VINational Wildlife Refuge
Humedal Maquenque
IUCN Not ReportedWetland of International Importance (Ramsar Site)
Los Guatuzos
IUCN IVWildlife Refuge
Wetland of International Importance (Ramsar Site)
3 more protected areassorted by area
Wetland of International Importance (Ramsar Site)
Río San Juan
IUCN IVWildlife Refuge
Historical Monument
1 page = 1 named river (aggregation of 99 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
104 distinct species · 130 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Río San Juan : 24 espèces reliées par 27 interactions GloBI sur 3 types (connectance 6.7%, 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).
Hydrology (HydroRIVERS v10)
Total length
3 062km
Max discharge
1 044,1m³/s
Max Strahler
7
Segments matched
99
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.