HydroBASINS lev08 watershed · #6080495070
Bassin de Riachão
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 5 administrative regions : Cristalândia do Piauí, Formosa do Rio Preto, Parnaguá, Santa Rita de Cássia, Sebastião Barros
Sub-basin area
881,9km²
Upstream area
882,1km²
Discharge
2,67m³/s
Mean elev.
528m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 456.5 km²52.0% of basin
- 414.0 km²47.1% of basin
- 6.5 km²0.7% of basin
- 1.5 km²0.2% of basin
- 0.0 km²0.0% of basin
1 intersecting protected areas
Environmental Protection Area
1.82 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
48 distinct species · 77 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°
24,3°C
Annual rain
997mm
Moisture idx (CMI)
-0,50
Runoff
122mm/an
PET
1 980mm
AET
842mm
Mean slope
3,0°
Water table
261cm
Forest
23%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)