HydroBASINS lev08 watershed · #1081065600
Bassin de Achwa
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 2 administrative regions : Aruu, Aswa
Sub-basin area
611km²
Upstream area
12 889km²
Discharge
41,51m³/s
Mean elev.
979m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Achwa523 km²
- Bassin de Achwa81 km²
2 dept-equivalent regions (GADM L2)
- 455.2 km²74.8% of basin
- 153.1 km²25.2% of basin
4 intersecting protected areas
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
106 distinct species · 301 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 Achwa : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) + 1 bulle famille, 19 interactions GloBI documentées sur 4 types (connectance 7.5%, filtre Serrano α=0.2). Les 1 bulle regroupe des espèces visuellement absorbées par famille (≥3 espèces visibles).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
23,9°C
Annual rain
1 402mm
Moisture idx (CMI)
-0,25
Runoff
111mm/an
PET
1 870mm
AET
1 184mm
Mean slope
1,8°
Water table
176cm
Forest
1%
Crops
7%
Urban
0%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)