HydroBASINS lev08 watershed · #5080081370
Bassin de Riverway1
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 17 administrative regions : Arosi East, Arosi North, Arosi South, Arosi West, Bauro Central +12
Sub-basin area
3 364,4km²
Upstream area
3 364,4km²
Discharge
25,79m³/s
Mean elev.
255m
Administrative coverage
17 dept-equivalent regions (GADM L2)
- 529.1 km²15.8% of basin
- 436.3 km²13.0% of basin
- 353.2 km²10.5% of basin
- 285.8 km²8.5% of basin
- 259.4 km²7.7% of basin
- 196.5 km²5.9% of basin
- 169.5 km²5.1% of basin
- 165.5 km²4.9% of basin
9 moreFull L2 list
- Bauro East159.0 km² · 4.7%
- Wainoni West145.0 km² · 4.3%
- Wainoni East131.2 km² · 3.9%
- Arosi East105.4 km² · 3.1%
- Arosi North92.9 km² · 2.8%
- Arosi West77.6 km² · 2.3%
- Ugi and Pio47.4 km² · 1.4%
- Santa Ana15.7 km² · 0.5%
- Santa Catalina5.6 km² · 0.2%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
967 distinct species · 7 434 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 18 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 Riverway1 : 17 espèces reliées par 11 interactions GloBI sur 3 types (connectance 6.4%, filtre Serrano α=0.2). 2 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°
25,0°C
Annual rain
3 571mm
Moisture idx (CMI)
0,60
Runoff
1 980mm/an
PET
1 414mm
AET
1 414mm
Mean slope
13,5°
Water table
434cm
Forest
94%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)