HydroBASINS lev08 watershed · #6080440580
Bassin de Rio Gurguéia
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 : Alvorada do Gurguéia, Cristino Castro, Palmeira do Piauí, Santa Luz
Sub-basin area
1 046,6km²
Upstream area
32 095km²
Discharge
85,96m³/s
Mean elev.
368m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Riacho do Pará1515 km²
- Bassin de Riacho dos Calhaus1306 km²
4 dept-equivalent regions (GADM L2)
- 500.6 km²48.0% of basin
- 479.2 km²46.0% of basin
- 62.5 km²6.0% of basin
- 0.0 km²0.0% of basin
1 intersecting protected areas
Park
34.70 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
111 distinct species · 416 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 28 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 Gurguéia : 21 espèces reliées par 30 interactions GloBI sur 4 types (connectance 7.4%, filtre Serrano α=0.2). 8 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°
26,4°C
Annual rain
986mm
Moisture idx (CMI)
-0,48
Runoff
161mm/an
PET
1 885mm
AET
833mm
Mean slope
3,8°
Water table
382cm
Forest
72%
Crops
3%
Urban
1%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)