HydroBASINS lev08 watershed · #1081382430
Bassin de Bua
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 14 administrative regions : Lake Malawi, Nkhotakota Game Reserve, Ntchisi Boma, SC Chakhaza, SC Chilooko +9
Sub-basin area
2 724,6km²
Upstream area
10 694,5km²
Discharge
41,82m³/s
Mean elev.
1 035m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Bua1007 km²
- Bassin de Bua532 km²
14 dept-equivalent regions (GADM L2)
- 664.5 km²24.5% of basin
- 444.4 km²16.4% of basin
- 399.0 km²14.7% of basin
- 296.8 km²10.9% of basin
- 288.5 km²10.6% of basin
- 256.0 km²9.4% of basin
- 142.3 km²5.2% of basin
- 76.6 km²2.8% of basin
6 moreFull L2 list
- Lake Malawi44.8 km² · 1.7%
- TA Kaomba38.4 km² · 1.4%
- TA Kanyenda33.3 km² · 1.2%
- SC Njombwa21.2 km² · 0.8%
- TA Dzoole6.1 km² · 0.2%
- Ntchisi Boma2.2 km² · 0.1%
1 intersecting protected areas
Nkhotakota Wildlife Reserve
IUCN IVWildlife Reserve
645.01 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
786 distinct species · 2 861 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 38 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 Bua : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 31 interactions GloBI sur 5 types (connectance 4.4%, filtre Serrano α=0.2). 3 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°
20,7°C
Annual rain
1 010mm
Moisture idx (CMI)
-0,33
Runoff
174mm/an
PET
1 510mm
AET
789mm
Mean slope
3,6°
Water table
195cm
Forest
25%
Crops
13%
Urban
2%
Protected
25%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)