HydroBASINS lev08 watershed · #6080364350
Bassin de Rio Parnaíba
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 4 administrative regions : Amarante, Angical do Piauí, Palmeirais, São Francisco do Maranhão
Sub-basin area
931km²
Upstream area
229 928,8km²
Discharge
709,57m³/s
Mean elev.
176m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Riacho do Mulato1030 km²
- Bassin de Rio Parnaíba1 km²
4 dept-equivalent regions (GADM L2)
- 381.3 km²41.1% of basin
- 372.1 km²40.1% of basin
- 168.7 km²18.2% of basin
- 4.8 km²0.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
156 distinct species · 267 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Parnaíba : 29 espèces reliées par 37 interactions GloBI sur 4 types (connectance 6.2%, 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°
26,7°C
Annual rain
1 281mm
Moisture idx (CMI)
-0,30
Runoff
270mm/an
PET
1 839mm
AET
998mm
Mean slope
4,9°
Water table
311cm
Forest
12%
Crops
6%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)