HydroBASINS lev08 watershed · #7080874670
Bassin de Río Ostúa
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 11 administrative regions across 2 countries : Agua Blanca, Asunción Mita, Atescatempa, Candelaria de la Frontera, Jutiapa +6
Sub-basin area
427,7km²
Upstream area
1 709,1km²
Discharge
30,35m³/s
Mean elev.
610m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Río Ostúa440 km²
- Bassin de Río Salado326 km²
11 dept-equivalent regions (GADM L2)
- Asunción MitaJutiapa · Guatemala331.1 km²77.7% of basin
- Santiago de la FronteraSanta Ana · El Salvador29.5 km²6.9% of basin
- San Antonio PajonalSanta Ana · El Salvador18.3 km²4.3% of basin
- YupiltepequeJutiapa · Guatemala13.5 km²3.2% of basin
- 6.9 km²1.6% of basin
- Lago de GuijaSanta Ana · El Salvador6.3 km²1.5% of basin
- AtescatempaJutiapa · Guatemala5.1 km²1.2% of basin
- Agua BlancaJutiapa · Guatemala4.7 km²1.1% of basin
3 moreFull L2 list
- Santa Catarina Mita4.4 km² · 1.0%
- Candelaria de la Frontera3.5 km² · 0.8%
- Metapán2.9 km² · 0.7%
5 intersecting protected areas
Trifinio-Fraternidad
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
34.22 km² overlap
Complejo Güija
IUCN Not ReportedWetland of International Importance (Ramsar Site)
12.71 km² overlap
Volcán Ixtepeque
IUCN IbPermanent closure zone
2.27 km² overlap
Volcán Las Víboras
IUCN IbPermanent closure zone
1.02 km² overlap
La Montañita
IUCN Not ReportedNatural Protected Area
0.20 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
477 distinct species · 3 697 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 Ostúa : 30 espèces + 4 bulles famille, 25 interactions GloBI documentées sur 3 types (connectance 4.5%, filtre Serrano α=0.2). Les 4 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°
24,3°C
Annual rain
1 307mm
Moisture idx (CMI)
-0,24
Runoff
652mm/an
PET
1 721mm
AET
1 015mm
Mean slope
6,4°
Water table
258cm
Forest
9%
Crops
71%
Urban
2%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)