HydroBASINS lev08 watershed · #6080643000
Bassin de Rio São Marcos
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 : Cristalina, Unaí
Sub-basin area
938,5km²
Upstream area
2 492,4km²
Discharge
31,88m³/s
Mean elev.
920m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ribeirão Samambaia880 km²
- Bassin de Rio São Marcos674 km²
2 dept-equivalent regions (GADM L2)
- CristalinaGoiás · Brazil511.3 km²54.7% of basin
- 424.1 km²45.3% of basin
1 intersecting protected areas
Natural Heritage Private Reserve
0.07 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
215 distinct species · 442 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 11 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 São Marcos : 10 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 7 interactions GloBI sur 3 types (connectance 12.7%, 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°
21,6°C
Annual rain
1 319mm
Moisture idx (CMI)
-0,21
Runoff
405mm/an
PET
1 663mm
AET
1 115mm
Mean slope
2,7°
Water table
212cm
Forest
1%
Crops
20%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)