HydroBASINS lev08 watershed · #5080531970
Bassin de Marra Creek
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 3 administrative regions : Brewarrina, Walgett, Warren
Sub-basin area
642,5km²
Upstream area
1 877,6km²
Discharge
1,17m³/s
Mean elev.
138m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Crooked Creek286 km²
- Bassin de Marra Creek139 km²
3 dept-equivalent regions (GADM L2)
- 410.8 km²64.0% of basin
- 188.2 km²29.3% of basin
- 42.9 km²6.7% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
248 distinct species · 968 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Marra Creek : 25 espèces reliées par 32 interactions GloBI sur 3 types (connectance 5.1%, filtre Serrano α=0.2). 11 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°
19,4°C
Annual rain
434mm
Moisture idx (CMI)
-0,73
Runoff
23mm/an
PET
1 594mm
AET
367mm
Mean slope
0,1°
Water table
12cm
Forest
0%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)