HydroBASINS lev08 watershed · #4080049570
Bassin de Pankulam Aru
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 11 administrative regions : Gomarankadawala, Hingurakgoda, Horowpothana, Kantalai, Kinniya +6
Sub-basin area
1 598,9km²
Upstream area
1 598,9km²
Discharge
0,36m³/s
Mean elev.
52m
Administrative coverage
11 dept-equivalent regions (GADM L2)
- 291.9 km²18.3% of basin
- 285.6 km²17.9% of basin
- 235.3 km²14.8% of basin
- 198.3 km²12.5% of basin
- 172.5 km²10.8% of basin
- 139.8 km²8.8% of basin
- 126.6 km²8.0% of basin
- 56.7 km²3.6% of basin
3 moreFull L2 list
- Hingurakgoda39.0 km² · 2.4%
- Medirigiriya2.3 km² · 0.1%
- Muttur1.5 km² · 0.1%
14 intersecting protected areas
Kantalai
IUCN IbReserved Forest
462.55 km² overlap
Trincomalee Naval Headworks
IUCN IVSanctuary
179.32 km² overlap
Thananparichchan
IUCN IbReserved Forest
169.66 km² overlap
Chundankadu
IUCN IbReserved Forest
48.56 km² overlap
Anawulandawa
IUCN IaConservation Forest
32.75 km² overlap
Reserved Forest
31.41 km² overlap
Hurulu Forest Reserve
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
20.17 km² overlap
Hurulu/Konwewa
IUCN IbReserved Forest
16.61 km² overlap
Pamburugashinna
IUCN IbReserved Forest
11.99 km² overlap
5 more protected areassorted by overlap area
Somawatiya Chaithya
IUCN IINational Park
5.86 km² overlap
Grate Sober Island
IUCN IVSanctuary
0.64 km² overlap
Paravi Dupatha National Park
IUCN IINational Park
0.30 km² overlap
Hurulu
IUCN IaConservation Forest
0.23 km² overlap
Little Sober Island
IUCN IVSanctuary
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 179 distinct species · 17 813 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 Pankulam Aru : 28 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 36 interactions GloBI sur 4 types (connectance 7.3%, filtre Serrano α=0.2). 4 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°
27,5°C
Annual rain
1 614mm
Moisture idx (CMI)
0,09
Runoff
518mm/an
PET
1 463mm
AET
1 002mm
Mean slope
1,7°
Water table
95cm
Forest
54%
Crops
8%
Urban
6%
Protected
34%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)