HydroBASINS lev08 watershed · #4080048940
Bassin de Ellapahala
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 8 administrative regions : Akmeemana, Bope-Poddala, Galle Four Gravets, Habaraduwa, Hikkaduwa +3
Sub-basin area
166,8km²
Upstream area
166,9km²
Discharge
7,22m³/s
Mean elev.
20m
Administrative coverage
8 dept-equivalent regions (GADM L2)
- 50.8 km²30.6% of basin
- 33.1 km²20.0% of basin
- 25.0 km²15.0% of basin
- 24.5 km²14.7% of basin
- 18.0 km²10.8% of basin
- 2.7 km²1.6% of basin
- 0.2 km²0.1% of basin
- 0.0 km²0.0% of basin
4 intersecting protected areas
Rumassala SAN
IUCN IVSanctuary
1.08 km² overlap
Eluwilayaya
IUCN IVSanctuary
0.79 km² overlap
Kottawa kombala
IUCN IaConservation Forest
0.37 km² overlap
Madinduwa
IUCN IVSanctuary
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 582 distinct species · 61 380 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Ellapahala : 38 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 38 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°
26,6°C
Annual rain
2 376mm
Moisture idx (CMI)
0,48
Runoff
1 345mm/an
PET
1 235mm
AET
1 203mm
Mean slope
2,3°
Water table
62cm
Forest
8%
Crops
74%
Urban
87%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)