HydroBASINS lev08 watershed · #6080384460
Bassin de Rio Piauí
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 6 administrative regions : Arraial, Cajazeiras do Piauí, Floriano, Francisco Ayres, Nazaré do Piauí +1
Sub-basin area
724km²
Upstream area
37 908,2km²
Discharge
18,78m³/s
Mean elev.
195m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Mucaitá2164 km²
- Bassin de Rio Piauí352 km²
6 dept-equivalent regions (GADM L2)
- 362.8 km²50.3% of basin
- 279.9 km²38.8% of basin
- 43.6 km²6.0% of basin
- 20.7 km²2.9% of basin
- 13.5 km²1.9% of basin
- 0.5 km²0.1% of basin
1 intersecting protected areas
Environmental Protection Area
0.16 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
23 distinct species · 44 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 2 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 Piauí : 2 espèces reliées par 1 interaction GloBI sur 1 type (connectance 100.0%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
27,1°C
Annual rain
1 070mm
Moisture idx (CMI)
-0,42
Runoff
137mm/an
PET
1 857mm
AET
902mm
Mean slope
3,4°
Water table
287cm
Forest
3%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)