HydroBASINS lev08 watershed · #6080009630
Bassin de Rio Preguiças
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 2 administrative regions : Barreirinhas, Paulino Neves
Sub-basin area
597,1km²
Upstream area
3 766,6km²
Discharge
108m³/s
Mean elev.
16m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Rio Juçaral395 km²
- Bassin de Rio Preguiças33 km²
2 dept-equivalent regions (GADM L2)
- 548.9 km²92.3% of basin
- 45.6 km²7.7% of basin
6 intersecting protected areas
Área De Proteção Ambiental Da Foz Do Rio Das Preguiças - Pequenos Lençóis - Região Lagunar Adjacente
IUCN VEnvironmental Protection Area
248.89 km² overlap
Wetland of International Importance (Ramsar Site)
204.92 km² overlap
Environmental Protection Area
173.90 km² overlap
Lençóis Maranhenses National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
99.57 km² overlap
Park
99.57 km² overlap
Natural Monument
0.03 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
488 distinct species · 1 670 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 Preguiças : 20 espèces reliées par 41 interactions GloBI sur 4 types (connectance 7.8%, filtre Serrano α=0.2). 13 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°
27,2°C
Annual rain
1 540mm
Moisture idx (CMI)
-0,08
Runoff
877mm/an
PET
1 675mm
AET
1 005mm
Mean slope
0,4°
Water table
17cm
Forest
13%
Crops
1%
Urban
3%
Protected
83%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)