HydroBASINS lev08 watershed · #7080003310
Bassin de Río Sis
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 17 administrative regions : Cuyotenango, Mazatenango, Nahualá, Pueblo Nuevo, Samayac +12
Sub-basin area
1 189,5km²
Upstream area
1 189,5km²
Discharge
0,33m³/s
Mean elev.
186m
Administrative coverage
17 dept-equivalent regions (GADM L2)
- 288.2 km²24.3% of basin
- San Andrés Villa SecaRetalhuleu · Guatemala240.1 km²20.3% of basin
- 221.4 km²18.7% of basin
- San Lorenzo215.6 km²18.2% of basin
- 59.1 km²5.0% of basin
- 39.4 km²3.3% of basin
- 29.3 km²2.5% of basin
- 21.8 km²1.8% of basin
9 moreFull L2 list
- San Bernardino18.0 km² · 1.5%
- San Gabriel15.1 km² · 1.3%
- San Francisco Zapotitlán12.5 km² · 1.1%
- Nahualá11.4 km² · 1.0%
- Santa Catarina Ixtahuacan2.7 km² · 0.2%
- San Pablo Jocopilas1.4 km² · 0.1%
- San Felipe0.7 km² · 0.1%
- San Martín Zapotitlán0.1 km² · 0.0%
- San José El Idolo0.0 km² · 0.0%
4 intersecting protected areas
Las Nubes
IUCN VPrivate Natural Reserve
8.10 km² overlap
Altamira
IUCN VPrivate Natural Reserve
3.65 km² overlap
Volcán Santo Tomás
IUCN IbPermanent closure zone
0.61 km² overlap
Finca Asturias
IUCN VPrivate Natural Reserve
0.19 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
809 distinct species · 6 861 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 36 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 Sis : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 56 interactions GloBI sur 3 types (connectance 8.9%, filtre Serrano α=0.2). 11 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°
26,6°C
Annual rain
2 356mm
Moisture idx (CMI)
0,16
Runoff
1 428mm/an
PET
1 793mm
AET
1 245mm
Mean slope
1,5°
Water table
25cm
Forest
11%
Crops
46%
Urban
6%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)