HydroBASINS lev08 watershed · #6080392120
Bassin de Riacho Grande
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 4 administrative regions : Araripe, Assaré, Potengi, Santana do Cariri
Sub-basin area
583,5km²
Upstream area
583,5km²
Discharge
1,13m³/s
Mean elev.
607m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 290.9 km²50.1% of basin
- 112.7 km²19.4% of basin
- 107.9 km²18.6% of basin
- 69.5 km²12.0% of basin
1 intersecting protected areas
Environmental Protection Area
380.95 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
174 distinct species · 543 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Riacho Grande : 31 espèces reliées par 42 interactions GloBI sur 5 types (connectance 6.0%, filtre Serrano α=0.2). 7 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°
24,0°C
Annual rain
804mm
Moisture idx (CMI)
-0,51
Runoff
67mm/an
PET
1 652mm
AET
679mm
Mean slope
3,6°
Water table
362cm
Forest
52%
Crops
12%
Urban
0%
Protected
25%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)