Ontologia

HydroBASINS lev08 watershed · #4081157550

Bassin de Deduru Oya

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 12 administrative regions : Ambanpola, Arachchikattuwa PS, Bingiriya, Ganewatta, Kobeigane +7

5% lakePfafstetter: 45800145

Sub-basin area

758,3km²

Upstream area

2 163,7km²

Discharge

47,16m³/s

Mean elev.

66m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Deduru Oya93 km²

▲ Receives from 2 basins

12 dept-equivalent regions (GADM L2)

4 more

5 intersecting protected areas

  • Mawattagama

    IUCN Ib

    Reserved Forest

    21.79 km² overlap

  • Ambanmukalana

    IUCN Ib

    Reserved Forest

    1.00 km² overlap

  • Dambukele

    IUCN Ib

    Reserved Forest

    0.26 km² overlap

  • Ambakele

    IUCN Ib

    Reserved Forest

    0.24 km² overlap

  • Abakele

    IUCN Ia

    Conservation Forest

    0.24 km² overlap

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

Species present

981 distinct species · 3 835 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

3 835 obs · 19 cellules
Obs. / cellule
≥ 1 855
469–1 854
159–468
64–158
< 64

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

Ecological tissue

Sample of 34 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 Deduru Oya : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 25 interactions GloBI sur 4 types (connectance 4.5%, filtre Serrano α=0.2). 2 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
25
Connectance
0.045
Patrimoniales
2
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°

27,5°C

Annual rain

1 466mm

Moisture idx (CMI)

-0,08

Runoff

636mm/an

PET

1 599mm

AET

1 166mm

Mean slope

1,0°

Water table

47cm

Forest

0%

Crops

51%

Urban

13%

Protected

3%

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