HydroBASINS lev08 watershed · #6080292580
Bassin de Riacho Caioca
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 : Forquilha, Santana do Acaraú, Sobral
Sub-basin area
225,9km²
Upstream area
225,9km²
Discharge
1,68m³/s
Mean elev.
117m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
3 dept-equivalent regions (GADM L2)
- 117.7 km²52.3% of basin
- 104.6 km²46.5% of basin
- 2.6 km²1.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
211 distinct species · 711 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 Caioca : 25 espèces reliées par 51 interactions GloBI sur 5 types (connectance 7.3%, filtre Serrano α=0.2). 13 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°
27,3°C
Annual rain
780mm
Moisture idx (CMI)
-0,58
Runoff
240mm/an
PET
1 873mm
AET
658mm
Mean slope
2,0°
Water table
102cm
Forest
54%
Crops
10%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)