HydroBASINS lev08 watershed · #6080452920
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 8 administrative regions : Anísio de Abreu, Bonfim do Piauí, Coronel José Dias, Jurema, São Braz do Piauí +3
Sub-basin area
1 938,6km²
Upstream area
3 928,8km²
Discharge
1,78m³/s
Mean elev.
463m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Rio Piauí1586 km²
- Bassin de Riacho do Umbuzeiro404 km²
8 dept-equivalent regions (GADM L2)
- 1321.1 km²68.4% of basin
- 319.9 km²16.6% of basin
- 194.6 km²10.1% of basin
- 81.7 km²4.2% of basin
- 7.5 km²0.4% of basin
- 5.1 km²0.3% of basin
- 0.7 km²0.0% of basin
- 0.0 km²0.0% of basin
1 intersecting protected areas
Park
14.43 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
546 distinct species · 1 771 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 : 35 espèces reliées par 36 interactions GloBI sur 4 types (connectance 4.4%, filtre Serrano α=0.2). 6 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°
25,9°C
Annual rain
742mm
Moisture idx (CMI)
-0,63
Runoff
19mm/an
PET
2 018mm
AET
626mm
Mean slope
2,4°
Water table
414cm
Forest
59%
Crops
13%
Urban
1%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)