Ontologia

HydroBASINS lev08 watershed · #4081156560

Bassin de Mahaweli River

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 4 administrative regions : Dimbulagala, Lankapura, Thamankaduwa, Welikanda

26% lakePfafstetter: 45800183

Sub-basin area

455,1km²

Upstream area

7 911,5km²

Discharge

205,43m³/s

Mean elev.

48m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Mahaweli River1064 km²

▲ Receives from 2 basins

4 dept-equivalent regions (GADM L2)

5 intersecting protected areas

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

201 distinct species · 607 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

607 obs · 10 cellules
Obs. / cellule
≥ 272
272–271
70–271
31–69
< 31

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 27 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Mahaweli River : 25 espèces dont 4 patrimoniales (LR IUCN CR/EN/VU) reliées par 18 interactions GloBI sur 3 types (connectance 4.1%, filtre Serrano α=0.2). 5 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
30
Interactions affichées
18
Connectance
0.041
Patrimoniales
4
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

27,4°C

Annual rain

1 749mm

Moisture idx (CMI)

0,14

Runoff

658mm/an

PET

1 508mm

AET

1 087mm

Mean slope

0,9°

Water table

56cm

Forest

11%

Crops

23%

Urban

4%

Protected

39%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)