HydroBASINS lev08 watershed · #7080857380
Bassin de Lalana
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 : San Juan Comaltepec, San Juan Lalana, Santiago Choápam
Sub-basin area
269,2km²
Upstream area
780km²
Discharge
42,24m³/s
Mean elev.
536m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Lalana342 km²
- Bassin de Lalana169 km²
3 dept-equivalent regions (GADM L2)
- 172.5 km²64.3% of basin
- 95.2 km²35.5% of basin
- 0.6 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
229 distinct species · 409 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Lalana : 25 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 51 interactions GloBI sur 5 types (connectance 8.1%, 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°
22,9°C
Annual rain
2 943mm
Moisture idx (CMI)
0,44
Runoff
1 636mm/an
PET
1 641mm
AET
1 386mm
Mean slope
15,2°
Water table
586cm
Forest
82%
Crops
21%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)