Ontologia

HydroBASINS lev08 watershed · #5080562740

Bassin de Helena 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 8 administrative regions : Armadale, Beverley, Kalamunda, Mundaring, Northam +3

2% lakePfafstetter: 56121004

Sub-basin area

1 664,9km²

Upstream area

1 664,9km²

Discharge

13,93m³/s

Mean elev.

278m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Swan River195 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

8 dept-equivalent regions (GADM L2)

15 intersecting protected areas

  • Wandoo

    IUCN II

    National Park

    360.33 km² overlap

  • Helena

    IUCN II

    National Park

    120.51 km² overlap

  • Beelu

    IUCN II

    National Park

    45.89 km² overlap

  • Korung

    IUCN II

    National Park

    16.33 km² overlap

  • Kalamunda

    IUCN II

    National Park

    3.97 km² overlap

  • Greenmount

    IUCN II

    National Park

    1.64 km² overlap

  • Gooseberry Hill

    IUCN II

    National Park

    1.07 km² overlap

  • Unnamed WA45106

    IUCN V

    5(1)(g) Reserve

    0.46 km² overlap

  • Helena River

    IUCN Not Assigned

    Management Area

    0.36 km² overlap

6 more protected areas

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

Species present

3 993 distinct species · 191 256 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

191 256 obs · 57 cellules
Obs. / cellule
≥ 50 458
6 767–50 457
2 101–6 766
662–2 100
< 662

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 Helena River : 25 espèces reliées par 39 interactions GloBI sur 3 types (connectance 7.0%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
34
Interactions affichées
39
Connectance
0.070
Patrimoniales
0
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°

16,7°C

Annual rain

806mm

Moisture idx (CMI)

-0,43

Runoff

261mm/an

PET

1 418mm

AET

627mm

Mean slope

3,6°

Water table

489cm

Forest

92%

Crops

13%

Urban

3%

Protected

33%

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