HydroBASINS lev08 watershed · #4080048920
Bassin · #4080048920
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 2 administrative regions : Matara Four Gravets, Weligama
Sub-basin area
10,9km²
Upstream area
10,9km²
Discharge
0,41m³/s
Mean elev.
10m
Species present
319 distinct species · 6 833 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 42 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 · #4080048920 : 39 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 4 types (connectance 4.6%, filtre Serrano α=0.2). 3 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°
26,8°C
Annual rain
2 183mm
Moisture idx (CMI)
0,42
Runoff
1 196mm/an
PET
1 276mm
AET
1 235mm
Mean slope
0,8°
Water table
31cm
Forest
4%
Crops
58%
Urban
100%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)