Rivière· 157 segments
Rio Grajaú
Crosses 15 administrative regions : Altamira do Maranhão, Arame, Bela Vista do Maranhão, Conceição do Lago-Açu, Grajaú +10
Total length
450km
Max discharge
325,7m³/s
Max Strahler
5
Segments matched
157
River geography15 admin regions · 0 communes
15 administrative regions crossed (GADM L2)
- GrajaúMaranhão · Brazil180.2 kmin this dpt
- Vitorino FreireMaranhão · Brazil85.6 kmin this dpt
- ArameMaranhão · Brazil83.4 kmin this dpt
- Itaipava do GrajaúMaranhão · Brazil75.6 kmin this dpt
- Paulo RamosMaranhão · Brazil53.8 kmin this dpt
- Marajá do SenaMaranhão · Brazil45.8 kmin this dpt
- Conceição do Lago-AçuMaranhão · Brazil21.7 kmin this dpt
- Vitória do MearimMaranhão · Brazil15.6 kmin this dpt
- Igarapé do MeioMaranhão · Brazil14.3 kmin this dpt
- Pio XIIMaranhão · Brazil14.2 kmin this dpt
- Bela Vista do MaranhãoMaranhão · Brazil9.5 kmin this dpt
- SatubinhaMaranhão · Brazil6.2 kmin this dpt
- Altamira do MaranhãoMaranhão · Brazil4.8 kmin this dpt
- Lago da PedraMaranhão · Brazil3.0 kmin this dpt
- Lagoa Grande do MaranhãoMaranhão · Brazil1.0 kmin this dpt
4 intersecting protected areas
Environmental Protection Area
Wetland of International Importance (Ramsar Site)
Geralda Toco Preto
IUCN Not ReportedIndigenous Area
Urucu/Juruá
IUCN Not ReportedIndigenous Area
1 page = 1 named river (aggregation of 157 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
0 distinct species · 0 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Graphe en cours d’indexation
Calcul du tissu écologique de cette entité.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 2s).
Hydrology (HydroRIVERS v10)
Total length
450km
Max discharge
325,7m³/s
Max Strahler
5
Segments matched
157
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.