HydroBASINS lev08 watershed · #1081130860
Bassin de Ewaso Nyiro
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 3 administrative regions : Isiolo North, Laikipia North, Samburu East
Sub-basin area
158,8km²
Upstream area
11 661,6km²
Discharge
34,09m³/s
Mean elev.
1 033m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ewaso Nyiro2746 km²
- Bassin de Sinyai1309 km²
3 dept-equivalent regions (GADM L2)
- 85.2 km²53.9% of basin
- 72.0 km²45.6% of basin
- 0.9 km²0.6% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
206 distinct species · 944 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 14 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 Ewaso Nyiro : 13 espèces reliées par 12 interactions GloBI sur 3 types (connectance 13.2%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
22,8°C
Annual rain
647mm
Moisture idx (CMI)
-0,69
Runoff
60mm/an
PET
2 073mm
AET
546mm
Mean slope
3,7°
Water table
396cm
Forest
0%
Crops
5%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)