HydroBASINS lev08 watershed · #4080049370
Bassin de Paali Aaru
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 9 administrative regions : Kandawali, Karachchi, Manthai East, Manthai West, Oddusuddan +4
Sub-basin area
1 875,9km²
Upstream area
1 875,9km²
Discharge
0,81m³/s
Mean elev.
29m
Administrative coverage
9 dept-equivalent regions (GADM L2)
- 435.5 km²23.3% of basin
- 323.6 km²17.3% of basin
- 317.1 km²17.0% of basin
- 234.4 km²12.5% of basin
- 190.8 km²10.2% of basin
- Vavuniya NorthVavuniya · Sri Lanka114.1 km²6.1% of basin
- 97.6 km²5.2% of basin
- 57.6 km²3.1% of basin
1 moreFull L2 list
- Vavuniya32.0 km² · 1.7%
21 intersecting protected areas
Thunukkai
IUCN IbReserved Forest
248.38 km² overlap
Killinochchi
IUCN IbReserved Forest
103.22 km² overlap
Mandakalr
IUCN IbReserved Forest
83.58 km² overlap
Akkiriyan
IUCN IbReserved Forest
82.23 km² overlap
Vannivilankulam
IUCN IbReserved Forest
70.84 km² overlap
Mundumurippu
IUCN IbReserved Forest
68.40 km² overlap
Neenthavil
IUCN IbReserved Forest
67.10 km² overlap
Kovikoduvittuvil
IUCN IbReserved Forest
64.32 km² overlap
Puliyankulama
IUCN IbReserved Forest
57.10 km² overlap
12 more protected areassorted by overlap area
Mullikulam
IUCN IbReserved Forest
52.85 km² overlap
Nagapaduwan
IUCN IbReserved Forest
40.27 km² overlap
WedithalathiveNR
IUCN IbNature Reserve
31.24 km² overlap
Pampeddi
IUCN IbReserved Forest
27.22 km² overlap
Panaikandamadu
IUCN IbReserved Forest
24.68 km² overlap
Chunnavil
IUCN IbReserved Forest
21.11 km² overlap
Madduvilnadu
IUCN IbReserved Forest
17.64 km² overlap
Ponnaveli
IUCN IbReserved Forest
16.39 km² overlap
Chundikulam NP
IUCN IVNational Park
10.94 km² overlap
Vavunikulam
IUCN IVSanctuary
10.16 km² overlap
Mundumurippu Exclusion
IUCN IbReserved Forest
5.83 km² overlap
Panikkankulam
IUCN IbReserved Forest
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
396 distinct species · 4 645 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 29 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 Paali Aaru : 24 espèces reliées par 36 interactions GloBI sur 4 types (connectance 8.9%, filtre Serrano α=0.2). 5 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°
27,6°C
Annual rain
1 317mm
Moisture idx (CMI)
-0,03
Runoff
351mm/an
PET
1 363mm
AET
844mm
Mean slope
0,4°
Water table
40cm
Forest
36%
Crops
8%
Urban
1%
Protected
28%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)