HydroBASINS lev08 watershed · #4081156450
Bassin · #4081156450
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 6 administrative regions : Dambulla, Galenbindunuwewa, Ipalogama, Kekirawa, Palugaswewa +1
Sub-basin area
273,4km²
Upstream area
273,4km²
Discharge
4,62m³/s
Mean elev.
166m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 95.4 km²35.0% of basin
- 87.5 km²32.1% of basin
- 81.6 km²30.0% of basin
- 6.5 km²2.4% of basin
- 1.2 km²0.5% of basin
- 0.1 km²0.0% of basin
6 intersecting protected areas
Tumbikulama
IUCN IbReserved Forest
22.13 km² overlap
Ritigala
IUCN IaStrict Nature Reserve
10.17 km² overlap
Inamaluwa
IUCN IbReserved Forest
5.47 km² overlap
Labunoruwa (642)
IUCN IbReserved Forest
5.17 km² overlap
Kinihirikanda
IUCN IbReserved Forest
2.03 km² overlap
Embulgaswewa
IUCN IbReserved Forest
1.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
426 distinct species · 7 366 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 · #4081156450 : 38 espèces dont 3 patrimoniales (LR IUCN CR/EN/VU) reliées par 32 interactions GloBI sur 3 types (connectance 4.1%, filtre Serrano α=0.2). 2 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
1 465mm
Moisture idx (CMI)
-0,07
Runoff
555mm/an
PET
1 575mm
AET
1 074mm
Mean slope
2,1°
Water table
121cm
Forest
50%
Crops
32%
Urban
1%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)