HydroBASINS lev08 watershed · #6080009040
Bassin de Rio Pericumã
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 5 administrative regions : Bequimão, Central do Maranhão, Guimarães, Mirinzal, Pinheiro
Sub-basin area
644,6km²
Upstream area
3 758,7km²
Discharge
151,4m³/s
Mean elev.
18m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Rio Pericumã1039 km²
- Bassin de Rio Pericumã311 km²
5 dept-equivalent regions (GADM L2)
- 255.9 km²39.9% of basin
- 230.2 km²35.9% of basin
- 106.6 km²16.6% of basin
- 40.9 km²6.4% of basin
- 8.2 km²1.3% of basin
5 intersecting protected areas
Environmental Protection Area
586.78 km² overlap
Reentrancias Maranhenses
IUCN VWetland of International Importance (Ramsar Site)
585.71 km² overlap
Wetland of International Importance (Ramsar Site)
56.00 km² overlap
Environmental Protection Area
54.93 km² overlap
Extractive Reserve
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
51 distinct species · 106 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 19 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 Pericumã : 18 espèces reliées par 16 interactions GloBI sur 2 types (connectance 9.4%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
27,1°C
Annual rain
1 857mm
Moisture idx (CMI)
0,14
Runoff
1 061mm/an
PET
1 590mm
AET
1 111mm
Mean slope
1,3°
Water table
34cm
Forest
71%
Crops
5%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)