Ontologia

HydroBASINS lev08 watershed · #1080053010

Bassin de Sandai

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 9 administrative regions : Bahati, Baringo South, Laikipia West, Mogotio, Ndaragwa +4

Endorheic 26% lakePfafstetter: 11530020

Sub-basin area

1 851,7km²

Upstream area

1 851,7km²

Discharge

6,12m³/s

Mean elev.

1 980m

Administrative coverage

9 dept-equivalent regions (GADM L2)

1 more
  • Bahati37.5 km² · 2.0%

11 intersecting protected areas

  • Kenya Lake System in the Great Rift Valley

    IUCN Not Applicable

    World Heritage Site (natural or mixed)

    116.47 km² overlap

  • Lake Bogoria

    IUCN II

    National Reserve

    106.12 km² overlap

  • Lake Bogoria

    IUCN IV

    Wetland of International Importance (Ramsar Site)

    99.00 km² overlap

  • Marmanet

    IUCN Not Reported

    Forest Reserve

    86.91 km² overlap

  • Bahati

    IUCN Not Reported

    Forest Reserve

    59.60 km² overlap

  • Ol Bolossat

    IUCN Not Reported

    Forest Reserve

    32.55 km² overlap

  • Muruai

    IUCN Not Reported

    Forest Reserve

    7.14 km² overlap

  • Ol Arabel

    IUCN Not Reported

    Forest Reserve

    6.91 km² overlap

  • Aberdares

    IUCN Not Reported

    Forest Reserve

    2.48 km² overlap

2 more protected areas

  • Kirima

    IUCN Not Reported

    Forest Reserve

    2.44 km² overlap

  • Uaso Narok

    IUCN Not Reported

    Forest Reserve

    2.23 km² overlap

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

Species present

1 409 distinct species · 27 706 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

27 706 obs · 43 cellules
Obs. / cellule
≥ 12 124
1 093–12 123
245–1 092
104–244
< 104

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

Ecological tissue

Sample of 24 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 Sandai : 20 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 24 interactions GloBI sur 2 types (connectance 8.7%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
24
Interactions affichées
24
Connectance
0.087
Patrimoniales
2
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°

16,8°C

Annual rain

958mm

Moisture idx (CMI)

-0,42

Runoff

263mm/an

PET

1 691mm

AET

810mm

Mean slope

5,8°

Water table

325cm

Forest

33%

Crops

11%

Urban

3%

Protected

12%

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