HydroBASINS lev08 watershed · #7080883030
Bassin de Río San Carlos
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 3 administrative regions across 2 countries : San Carlos, Sarapiquí
Sub-basin area
279,1km²
Upstream area
3 232,8km²
Discharge
178,18m³/s
Mean elev.
86m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Tres Amigos459 km²
- Bassin de Río San Carlos302 km²
3 dept-equivalent regions (GADM L2)
- San CarlosAlajuela · Costa Rica215.2 km²77.4% of basin
- SarapiquíHeredia · Costa Rica62.8 km²22.6% of basin
- 0.0 km²0.0% of basin
6 intersecting protected areas
Agua y Paz
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
278.03 km² overlap
Humedal Maquenque
IUCN Not ReportedWetland of International Importance (Ramsar Site)
225.17 km² overlap
Corredor Fronterizo
IUCN VINational Wildlife Refuge
7.09 km² overlap
Wetland of International Importance (Ramsar Site)
0.01 km² overlap
Río San Juan
IUCN IVWildlife Refuge
0.01 km² overlap
Reserva de Biosfera Río San Juan Nicaragua
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
0.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 205 distinct species · 242 493 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 Carlos : 20 espèces reliées par 19 interactions GloBI sur 2 types (connectance 6.3%, 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°
25,7°C
Annual rain
3 634mm
Moisture idx (CMI)
0,57
Runoff
2 118mm/an
PET
1 562mm
AET
1 510mm
Mean slope
4,4°
Water table
172cm
Forest
60%
Crops
3%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)