HydroBASINS lev08 watershed · #6080355910
Bassin de Rio Piranhas-Açu
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 13 administrative regions : Açu, Belém do Brejo do Cruz, Caicó, Campo Grande, Florânia +8
Sub-basin area
2 061km²
Upstream area
35 760,6km²
Discharge
81,87m³/s
Mean elev.
173m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Piranhas-Açu2266 km²
- Bassin de Rio Seridó651 km²
13 dept-equivalent regions (GADM L2)
- 932.5 km²45.4% of basin
- 407.6 km²19.9% of basin
- 236.1 km²11.5% of basin
- 125.6 km²6.1% of basin
- 106.0 km²5.2% of basin
- 66.3 km²3.2% of basin
- 59.2 km²2.9% of basin
- 49.1 km²2.4% of basin
5 moreFull L2 list
- Belém do Brejo do Cruz40.7 km² · 2.0%
- Jardim de Piranhas18.7 km² · 0.9%
- Paraú9.6 km² · 0.5%
- Itajá0.6 km² · 0.0%
- Campo Grande0.0 km² · 0.0%
1 intersecting protected areas
Natural Heritage Private Reserve
7.56 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
390 distinct species · 992 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 16 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 Rio Piranhas-Açu : 14 espèces reliées par 15 interactions GloBI sur 2 types (connectance 12.5%, filtre Serrano α=0.2). 2 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°
26,8°C
Annual rain
734mm
Moisture idx (CMI)
-0,57
Runoff
81mm/an
PET
1 697mm
AET
621mm
Mean slope
4,8°
Water table
284cm
Forest
10%
Crops
5%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)