HydroBASINS lev08 watershed · #1081580810
Bassin de Notwane River
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 6 administrative regions across 2 countries : Gaborone, Kgatleng, Kweneng South, Ngaka Modiri Molema, Ngwaketse North +1
Sub-basin area
1 377,8km²
Upstream area
5 197,3km²
Discharge
1,38m³/s
Mean elev.
1 060m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Nnywane River2263 km²
- Bassin de Notwane River1556 km²
6 dept-equivalent regions (GADM L2)
- 558.4 km²40.6% of basin
- 291.7 km²21.2% of basin
- 247.6 km²18.0% of basin
- 149.8 km²10.9% of basin
- 81.8 km²5.9% of basin
- 45.7 km²3.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 378 distinct species · 65 106 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 Notwane River : 24 espèces reliées par 22 interactions GloBI sur 3 types (connectance 6.8%, 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°
19,8°C
Annual rain
448mm
Moisture idx (CMI)
-0,74
Runoff
8mm/an
PET
1 699mm
AET
378mm
Mean slope
1,9°
Water table
546cm
Forest
13%
Crops
5%
Urban
12%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)