HydroBASINS lev08 watershed · #7080874810
Bassin de Río Guajoyo
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 9 administrative regions : Candelaria de la Frontera, Chalchuapa, El Porvenir, Lago de Guija, Metapán +4
Sub-basin area
205,5km²
Upstream area
205,5km²
Discharge
4,64m³/s
Mean elev.
682m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
9 dept-equivalent regions (GADM L2)
- Candelaria de la FronteraSanta Ana · El Salvador91.7 km²44.8% of basin
- San Antonio PajonalSanta Ana · El Salvador32.1 km²15.7% of basin
- TexistepequeSanta Ana · El Salvador31.6 km²15.4% of basin
- MetapánSanta Ana · El Salvador21.9 km²10.7% of basin
- El PorvenirSanta Ana · El Salvador9.6 km²4.7% of basin
- Santiago de la FronteraSanta Ana · El Salvador9.0 km²4.4% of basin
- Santa AnaSanta Ana · El Salvador5.9 km²2.9% of basin
- ChalchuapaSanta Ana · El Salvador2.7 km²1.3% of basin
1 moreFull L2 list
- Lago de Guija0.1 km² · 0.1%
7 intersecting protected areas
Trifinio-Fraternidad
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
65.33 km² overlap
San Jerónimo
IUCN Not ReportedProtection and Restoration Area
0.37 km² overlap
Complejo Güija
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.35 km² overlap
La Criba
IUCN Not ReportedNatural Protected Area
0.26 km² overlap
Paraje Galán
IUCN Not ReportedProtected Area with Managed Resources
0.24 km² overlap
La Montañita
IUCN Not ReportedNatural Protected Area
0.13 km² overlap
La Magdalena
IUCN Not ReportedProtected Area with Managed Resources
0.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
719 distinct species · 3 108 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Guajoyo : 29 espèces + 2 bulles famille, 28 interactions GloBI documentées sur 3 types (connectance 6.0%, filtre Serrano α=0.2). Les 2 bulles regroupent des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
23,5°C
Annual rain
1 572mm
Moisture idx (CMI)
-0,09
Runoff
731mm/an
PET
1 720mm
AET
1 086mm
Mean slope
8,9°
Water table
326cm
Forest
18%
Crops
64%
Urban
5%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)