HydroBASINS lev08 watershed · #6080370750
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 16 administrative regions : Almino Afonso, Belém do Brejo do Cruz, Brejo do Cruz, Campo Grande, Catolé do Rocha +11
Sub-basin area
2 266km²
Upstream area
23 733,3km²
Discharge
73,38m³/s
Mean elev.
195m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Piranhas-Açu436 km²
- Bassin de Rio Espinharas113 km²
16 dept-equivalent regions (GADM L2)
- 558.8 km²24.8% of basin
- 404.3 km²17.9% of basin
- 372.6 km²16.5% of basin
- 311.7 km²13.8% of basin
- 253.8 km²11.2% of basin
- 84.8 km²3.8% of basin
- 77.7 km²3.4% of basin
- 70.5 km²3.1% of basin
8 moreFull L2 list
- Messias Targino55.8 km² · 2.5%
- São Fernando35.0 km² · 1.6%
- São Bento17.7 km² · 0.8%
- Almino Afonso8.4 km² · 0.4%
- Campo Grande3.9 km² · 0.2%
- João Dias1.0 km² · 0.0%
- Jucurutu0.3 km² · 0.0%
- Janduís0.1 km² · 0.0%
1 intersecting protected areas
Estação Ecológica Do Seridó
IUCN IaEcological Station
0.54 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
597 distinct species · 2 189 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 : 17 espèces reliées par 20 interactions GloBI sur 2 types (connectance 10.5%, filtre Serrano α=0.2). 3 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°
26,5°C
Annual rain
783mm
Moisture idx (CMI)
-0,55
Runoff
101mm/an
PET
1 725mm
AET
661mm
Mean slope
2,1°
Water table
133cm
Forest
19%
Crops
11%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)