HydroBASINS lev08 watershed · #1081053880
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 5 administrative regions across 2 countries : Aruu, Aswa, Kilak, Lamwo, Magwi
Sub-basin area
1 686,6km²
Upstream area
25 830km²
Discharge
57,07m³/s
Mean elev.
827m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Achwa611 km²
- Bassin de Pager River242 km²
5 dept-equivalent regions (GADM L2)
- 1058.0 km²63.0% of basin
- 307.3 km²18.3% of basin
- 215.2 km²12.8% of basin
- 98.6 km²5.9% of basin
- 0.1 km²0.0% of basin
3 intersecting protected areas
Achwa River
IUCN Not ReportedForest Reserve
85.68 km² overlap
Paonyeme
IUCN Not ReportedForest Reserve
2.13 km² overlap
Aram
IUCN Not ReportedForest Reserve
1.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
41 distinct species · 210 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 5 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 : 5 espèces reliées par 3 interactions GloBI sur 1 type (connectance 30.0%, filtre Serrano α=0.2).
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
1 251mm
Moisture idx (CMI)
-0,36
Runoff
55mm/an
PET
1 944mm
AET
1 059mm
Mean slope
2,1°
Water table
196cm
Forest
62%
Crops
45%
Urban
0%
Protected
5%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)