Ontologia

HydroBASINS lev08 watershed · #1081123680

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 6 administrative regions : Igembe Central, Igembe North, Isiolo North, Isiolo South, Samburu East +1

Pfafstetter: 11429013

Sub-basin area

3 289,1km²

Upstream area

19 098,6km²

Discharge

57,25m³/s

Mean elev.

850m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Uaso Nyiro2978 km²

▲ Receives from 2 basins

6 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Nyambene

    IUCN Not Reported

    National Reserve

    449.53 km² overlap

  • Shaba

    IUCN II

    National Reserve

    239.72 km² overlap

  • Nyambeni

    IUCN Not Reported

    Forest Reserve

    4.80 km² overlap

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

Species present

1 724 distinct species · 31 614 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

31 614 obs · 82 cellules
Obs. / cellule
≥ 14 853
221–14 852
47–220
18–46
< 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 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).

RègnesAnimalPlanteChampignonBacterie
RelationsPredationParasitismeSymbiosePollinisation
StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de Ewaso Nyiro : 13 espèces reliées par 12 interactions GloBI sur 2 types (connectance 13.2%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
14
Interactions affichées
12
Connectance
0.132
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°

23,6°C

Annual rain

658mm

Moisture idx (CMI)

-0,67

Runoff

76mm/an

PET

2 041mm

AET

535mm

Mean slope

2,5°

Water table

180cm

Forest

1%

Crops

8%

Urban

1%

Protected

7%

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