HydroBASINS lev08 watershed · #1081203520
Bassin de Namanga
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 8 administrative regions across 2 countries : Arusha, Hai, Kajiado Central, Kajiado South, Longido +3
Sub-basin area
4 551,5km²
Upstream area
4 551,5km²
Discharge
18,86m³/s
Mean elev.
1 486m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
8 dept-equivalent regions (GADM L2)
- LongidoArusha · Tanzania3207.9 km²70.8% of basin
- 665.0 km²14.7% of basin
- 268.1 km²5.9% of basin
- 212.3 km²4.7% of basin
- 105.7 km²2.3% of basin
- 28.4 km²0.6% of basin
- 28.1 km²0.6% of basin
- 15.9 km²0.4% of basin
10 intersecting protected areas
Enduimet WMA
IUCN Not ReportedWildlife Management Area
1192.80 km² overlap
Lake Natron GCA
IUCN Not ReportedGame controlled area
1189.85 km² overlap
Kilimanjaro National Park
IUCN IINational Park
251.31 km² overlap
Kilimanjaro National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
116.86 km² overlap
Arusha National Park
IUCN IINational Park
110.54 km² overlap
West Kilimanjaro
IUCN Not ReportedForest Plantation
72.98 km² overlap
Longido
IUCN Not ReportedForest Reserve
20.62 km² overlap
Meru
IUCN Not ReportedForest Plantation
18.39 km² overlap
Monduli Juu O.A.
IUCN Not ReportedOpen area
18.10 km² overlap
1 more protected areassorted by overlap area
Namanga Hill
IUCN Not ReportedForest Reserve
8.11 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 978 distinct species · 86 937 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 11 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 Namanga : 10 espèces reliées par 7 interactions GloBI sur 2 types (connectance 12.7%, 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°
19,3°C
Annual rain
738mm
Moisture idx (CMI)
-0,51
Runoff
136mm/an
PET
1 548mm
AET
603mm
Mean slope
3,3°
Water table
216cm
Forest
7%
Crops
9%
Urban
0%
Protected
35%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)