HydroBASINS lev08 watershed · #7080883450
Bassin de Río Chiquito
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 : Guatuso, San Carlos, Tilarán
Sub-basin area
338,7km²
Upstream area
338,8km²
Discharge
13,69m³/s
Mean elev.
774m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- Tilarán333.3 km²98.8% of basin
- San CarlosAlajuela · Costa Rica2.9 km²0.9% of basin
- GuatusoAlajuela · Costa Rica1.1 km²0.3% of basin
7 intersecting protected areas
Agua y Paz
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
332.75 km² overlap
Cuenca Embalse Arenal
IUCN Not ReportedWetland of International Importance (Ramsar Site)
329.61 km² overlap
Volcan Tenorio
IUCN IINational Park
11.13 km² overlap
Arenal Monteverde
IUCN IVProtected Zone
10.94 km² overlap
Tenorio
IUCN IVProtected Zone
5.74 km² overlap
Arenal
IUCN IINational Park
4.35 km² overlap
Protected areas with sustainable use of natural resources
0.42 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 271 distinct species · 126 570 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 Chiquito : 16 espèces reliées par 17 interactions GloBI sur 3 types (connectance 8.1%, 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°
22,3°C
Annual rain
3 124mm
Moisture idx (CMI)
0,50
Runoff
1 271mm/an
PET
1 520mm
AET
1 398mm
Mean slope
7,8°
Water table
269cm
Forest
25%
Crops
14%
Urban
0%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)