HydroBASINS lev08 watershed · #6080425880
Bassin de Riacho São Pedro
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 7 administrative regions : Araripina, Betânia do Piauí, Curral Novo do Piauí, Ouricuri, Santa Filomena +2
Sub-basin area
774,1km²
Upstream area
2 289,6km²
Discharge
7,28m³/s
Mean elev.
541m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Riacho São Pedro1033 km²
- Bassin de Riacho São Pedro482 km²
7 dept-equivalent regions (GADM L2)
- 456.6 km²59.2% of basin
- 259.7 km²33.7% of basin
- 37.6 km²4.9% of basin
- 9.8 km²1.3% of basin
- 4.8 km²0.6% of basin
- 2.2 km²0.3% of basin
- 0.1 km²0.0% of basin
1 intersecting protected areas
Environmental Protection Area
0.71 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
120 distinct species · 158 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Riacho São Pedro : 32 espèces reliées par 27 interactions GloBI sur 4 types (connectance 4.1%, filtre Serrano α=0.2). 5 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°
24,2°C
Annual rain
646mm
Moisture idx (CMI)
-0,64
Runoff
118mm/an
PET
1 773mm
AET
545mm
Mean slope
2,0°
Water table
229cm
Forest
4%
Crops
10%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)