Ontologia

HydroBASINS lev08 watershed · #6080351190

Bassin de Rio Grajaú

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 : Amarante do Maranhão, Grajaú

Pfafstetter: 63106279

Sub-basin area

223,2km²

Upstream area

8 544,7km²

Discharge

122,48m³/s

Mean elev.

215m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Rio Grajaú112 km²

▲ Receives from 2 basins

2 dept-equivalent regions (GADM L2)

1 intersecting protected areas

  • Arariboia

    IUCN Not Reported

    Indigenous Area

    6.26 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

29 distinct species · 38 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

38 obs · 2 cellules
Obs. / cellule
≥ 31
31–30
31–30
31–30
< 31

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Not enough documented interactions to build a meaningful graph for this territory.

Hydroclimate (BasinATLAS lev08)

Mean T°

26,0°C

Annual rain

1 180mm

Moisture idx (CMI)

-0,37

Runoff

421mm/an

PET

1 874mm

AET

994mm

Mean slope

3,8°

Water table

243cm

Forest

63%

Crops

4%

Urban

0%

Protected

3%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)