HydroBASINS lev08 watershed · #6080428090
Bassin de Riacho do Fidalgo
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 : Campo Alegre do Fidalgo, Capitão Gervásio Oliveira, Lagoa do Barro do Piauí, Nova Santa Rita, São Francisco de Assis do Piauí +1
Sub-basin area
821,5km²
Upstream area
821,8km²
Discharge
0,47m³/s
Mean elev.
371m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 408.5 km²49.9% of basin
- 208.0 km²25.4% of basin
- 84.2 km²10.3% of basin
- 68.2 km²8.3% of basin
- 45.3 km²5.5% of basin
- 3.8 km²0.5% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
104 distinct species · 140 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 do Fidalgo : 17 espèces reliées par 26 interactions GloBI sur 3 types (connectance 12.4%, filtre Serrano α=0.2). 4 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°
26,6°C
Annual rain
616mm
Moisture idx (CMI)
-0,69
Runoff
19mm/an
PET
1 998mm
AET
519mm
Mean slope
2,1°
Water table
458cm
Forest
86%
Crops
0%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)