Ontologia

HydroBASINS lev08 watershed · #1081174660

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 4 administrative regions : Narok East, Narok North, Narok South, Njoro

EndorheicPfafstetter: 11520560

Sub-basin area

1 475,4km²

Upstream area

1 475,4km²

Discharge

4,47m³/s

Mean elev.

2 337m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Southern Ewaso Ng'iro131 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

4 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Southern Mau

    IUCN Not Reported

    Forest Reserve

    1.28 km² overlap

  • Eastern Mau

    IUCN Not Reported

    Forest Reserve

    0.00 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

488 distinct species · 1 245 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

1 245 obs · 30 cellules
Obs. / cellule
≥ 139
121–138
85–120
18–84
< 18

Source : GBIF — observations agrégées par hexagones 0.027° × 0.027° (~22km), filtre précision coordonnée < 10 km. Fond carte : OpenFreeMap · © OpenStreetMap.

Ecological tissue

Sample of 42 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Ewaso Nyiro : 35 espèces reliées par 50 interactions GloBI sur 4 types (connectance 5.8%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
42
Interactions affichées
50
Connectance
0.058
Patrimoniales
0
Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

14,7°C

Annual rain

842mm

Moisture idx (CMI)

-0,42

Runoff

135mm/an

PET

1 495mm

AET

712mm

Mean slope

6,4°

Water table

389cm

Forest

25%

Crops

12%

Urban

1%

Protected

0%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)