HydroBASINS lev08 watershed · #6080008590
Bassin de Rio Piriá
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 3 administrative regions : Augusto Corrêa, Bragança, Viseu
Sub-basin area
913,9km²
Upstream area
5 484,4km²
Discharge
216,92m³/s
Mean elev.
27m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Rio Peritoró878 km²
- Bassin de Rio Piriá524 km²
3 dept-equivalent regions (GADM L2)
- 894.4 km²98.3% of basin
- 11.2 km²1.2% of basin
- 4.2 km²0.5% of basin
2 intersecting protected areas
Wetland of International Importance (Ramsar Site)
120.33 km² overlap
Extractive Reserve
92.99 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
267 distinct species · 1 146 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 39 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 Piriá : 33 espèces reliées par 41 interactions GloBI sur 2 types (connectance 5.3%, filtre Serrano α=0.2). 7 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
2 177mm
Moisture idx (CMI)
0,25
Runoff
1 318mm/an
PET
1 625mm
AET
1 226mm
Mean slope
1,2°
Water table
32cm
Forest
51%
Crops
8%
Urban
0%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)