HydroBASINS lev08 watershed · #6080426060
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 : Betânia do Piauí, Ouricuri, Santa Cruz, Santa Filomena
Sub-basin area
533,8km²
Upstream area
533,9km²
Discharge
1,69m³/s
Mean elev.
555m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 245.2 km²46.1% of basin
- Santa Cruz151.9 km²28.6% of basin
- 132.6 km²24.9% of basin
- 1.8 km²0.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
16 distinct species · 23 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
24,0°C
Annual rain
609mm
Moisture idx (CMI)
-0,66
Runoff
107mm/an
PET
1 773mm
AET
514mm
Mean slope
3,4°
Water table
277cm
Forest
21%
Crops
5%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)