Rivière· 62 segments

Mahaweli River

Crosses 12 administrative regions : Dehiattakandiya, Dimbulagala, Kantalai, Kinniya, Lankapura +7

rivière

Total length

139km

Max discharge

234,1m³/s

Max Strahler

Segments matched

River geography12 admin regions · 0 communes

Parent watershed

hybas-4081156560455 km²

12 administrative regions crossed (GADM L2)

Seruvila
Trincomalee · Sri Lanka
36.9 km
in this dpt
Welikanda
Polonnaruwa · Sri Lanka
34.9 km
in this dpt
Thamankaduwa
Polonnaruwa · Sri Lanka
33.5 km
in this dpt
Dimbulagala
Polonnaruwa · Sri Lanka
26.4 km
in this dpt
Kantalai
Trincomalee · Sri Lanka
19.6 km
in this dpt
Medirigiriya
Polonnaruwa · Sri Lanka
15.2 km
in this dpt
Wilgamuwa
Matale · Sri Lanka
13.4 km
in this dpt
Dehiattakandiya
Ampara · Sri Lanka
12.3 km
in this dpt
Lankapura
Polonnaruwa · Sri Lanka
11.2 km
in this dpt
Mahiyanganaya
Badulla · Sri Lanka
7.0 km
in this dpt
Muttur
Trincomalee · Sri Lanka
6.8 km
in this dpt
Kinniya
Trincomalee · Sri Lanka
2.2 km
in this dpt

8 intersecting protected areas

Somawatiya Chaithya
IUCN II
National Park
Wasgamuwa
IUCN II
National Park
Trikonamadu
IUCN IV
Nature Reserve
Flood Plains
IUCN II
National Park
Mahaweli
IUCN Ib
Reserved Forest
Kelegama
IUCN Ib
Reserved Forest
Riverine
IUCN IV
Nature Reserve
Paludeniya
IUCN Ib
Reserved Forest

1 page = 1 named river (aggregation of 62 HydroRIVERS v10 segments). Spatial join cached after first hit.

Species present

44 distinct species · 44 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 17 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

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Mahaweli River : 17 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 11 interactions GloBI sur 3 types (connectance 8.1%, filtre Serrano α=0.2).

Espèces affichées

Interactions affichées

Connectance

0.081

Patrimoniales

Plus dense que (national)0 %(top 100%)

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

Hydrology (HydroRIVERS v10)