HydroBASINS lev08 watershed · #7080003390
Bassin de Río Samalá
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 35 administrative regions : Almolonga, Cajolá, Cantel, Champerico, Concepción Chiquirichapa +30
Sub-basin area
1 505,9km²
Upstream area
1 505,9km²
Discharge
78,56m³/s
Mean elev.
1 628m
Administrative coverage
35 dept-equivalent regions (GADM L2)
- San Andrés Villa SecaRetalhuleu · Guatemala192.4 km²12.8% of basin
- RetalhuleuRetalhuleu · Guatemala174.3 km²11.6% of basin
- 129.6 km²8.6% of basin
- TotonicapánTotonicapán · Guatemala122.5 km²8.2% of basin
- Santa Cruz MuluáRetalhuleu · Guatemala121.1 km²8.1% of basin
- 96.8 km²6.5% of basin
- 87.4 km²5.8% of basin
- San Francisco El AltoTotonicapán · Guatemala79.9 km²5.3% of basin
27 moreFull L2 list
- Zunil70.9 km² · 4.7%
- Cantel49.8 km² · 3.3%
- San Cristóbal Totonicapán42.3 km² · 2.8%
- Ostuncalco39.7 km² · 2.6%
- San Felipe34.2 km² · 2.3%
- Olintepeque33.0 km² · 2.2%
- San Andrés Xecul21.2 km² · 1.4%
- Cajolá20.8 km² · 1.4%
- San Francisco La Unión19.0 km² · 1.3%
- Momostenango18.9 km² · 1.3%
- Salcajá18.2 km² · 1.2%
- San Sebastián17.9 km² · 1.2%
- Sibilia17.2 km² · 1.1%
- Concepción Chiquirichapa15.7 km² · 1.0%
- San Miguel Sigüilá14.8 km² · 1.0%
- La Esperanza13.5 km² · 0.9%
- Almolonga13.3 km² · 0.9%
- San Martín Zapotitlán10.8 km² · 0.7%
- San Mateo10.8 km² · 0.7%
- Palestina de Los Altos5.7 km² · 0.4%
- Zunilito3.5 km² · 0.2%
- Nahualá3.3 km² · 0.2%
- Santa María Chiquimula1.3 km² · 0.1%
- Champerico0.3 km² · 0.0%
- Pueblo Nuevo0.2 km² · 0.0%
- Huitán0.2 km² · 0.0%
- San Martín Sacatepéquez0.0 km² · 0.0%
17 intersecting protected areas
Quetzaltenango - Saqbé
IUCN IVRegional Municipal Park
45.61 km² overlap
Volcán Santo Tomás
IUCN IbPermanent closure zone
21.77 km² overlap
Zunil
IUCN IVRegional Municipal Park
14.54 km² overlap
Volcán Zunil
IUCN IbPermanent closure zone
13.41 km² overlap
Volcán Santiaguito
IUCN IbPermanent closure zone
11.27 km² overlap
Volcán Santa María
IUCN IbPermanent closure zone
10.84 km² overlap
Volcán Siete Orejas
IUCN IbPermanent closure zone
6.06 km² overlap
Cuenca del Lago Atitlán
IUCN IIIMultiple Use Area
5.97 km² overlap
Volcán Cerro Quemado
IUCN IbPermanent closure zone
3.37 km² overlap
8 more protected areassorted by overlap area
Finca Asturias
IUCN VPrivate Natural Reserve
2.83 km² overlap
Regional Municipal Park
2.82 km² overlap
Concepcion Chiquirichapa
IUCN IVRegional Municipal Park
1.42 km² overlap
Finca Patrocinio
IUCN VPrivate Natural Reserve
1.38 km² overlap
Cerro del Baúl
IUCN IINational Park
1.33 km² overlap
Regional Municipal Park
0.63 km² overlap
Regional Municipal Park
0.39 km² overlap
Altamira
IUCN VPrivate Natural Reserve
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 562 distinct species · 89 487 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 18 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 Samalá : 10 espèces reliées par 29 interactions GloBI sur 4 types (connectance 19.0%, filtre Serrano α=0.2). 8 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°
18,0°C
Annual rain
1 801mm
Moisture idx (CMI)
0,09
Runoff
1 346mm/an
PET
1 456mm
AET
1 016mm
Mean slope
7,9°
Water table
244cm
Forest
48%
Crops
28%
Urban
38%
Protected
8%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)