HydroBASINS lev08 watershed · #1081195140
Bassin de Tana 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 1 administrative regions : Garsen
Sub-basin area
74,3km²
Upstream area
82 878,1km²
Discharge
242,28m³/s
Mean elev.
15m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Tana River1326 km²
- Bassin de Tana River30 km²
1 dept-equivalent regions (GADM L2)
- 73.9 km²100.0% of basin
2 intersecting protected areas
Hewani
IUCN Not ReportedForest Reserve
15.64 km² overlap
Tana River Delta Ramsar Site
IUCN VIWetland of International Importance (Ramsar Site)
4.93 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
344 distinct species · 682 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 45 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 Tana River : 34 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 45 interactions GloBI sur 5 types (connectance 4.5%, filtre Serrano α=0.2). 11 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°
27,1°C
Annual rain
749mm
Moisture idx (CMI)
-0,54
Runoff
82mm/an
PET
1 642mm
AET
633mm
Mean slope
0,1°
Water table
10cm
Forest
51%
Crops
6%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)