HydroBASINS lev08 watershed · #6080191610
Bassin de Rio MArari
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 across 2 countries : Barcelos, Río Negro, Santa Isabel do Rio Negro
Sub-basin area
1 126km²
Upstream area
1 126,1km²
Discharge
40,79m³/s
Mean elev.
332m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 578.0 km²51.6% of basin
- 517.4 km²46.2% of basin
- 25.6 km²2.3% of basin
6 intersecting protected areas
Yanomami
IUCN Not ReportedIndigenous Area
1095.92 km² overlap
Forest
989.13 km² overlap
Natural Monument (MN)
66.88 km² overlap
Paríma - Tapirapeco
IUCN IINational Park (PN)
40.24 km² overlap
Alto Orinoco - Casiquiare
IUCN VIBiosphere Reserve (RB)
36.94 km² overlap
Alto Orinoco - Casiquiare
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
36.94 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
53 distinct species · 113 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 6 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 MArari : 6 espèces reliées par 4 interactions GloBI sur 2 types (connectance 26.7%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
25,5°C
Annual rain
2 581mm
Moisture idx (CMI)
0,34
Runoff
1 206mm/an
PET
1 706mm
AET
1 653mm
Mean slope
8,6°
Water table
235cm
Forest
100%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)