Ontologia

HydroBASINS lev08 watershed · #1081503330

Bassin de Sawurogab

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 : Sesfontein

Pfafstetter: 12809613

Sub-basin area

322,5km²

Upstream area

14 281,6km²

Discharge

5,92m³/s

Mean elev.

541m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Hoanib1071 km²

▲ Receives from 2 basins

1 dept-equivalent regions (GADM L2)

2 intersecting protected areas

  • Sesfontein

    IUCN Not Reported

    Communal Conservancy

    210.79 km² overlap

  • Palmwag

    IUCN Not Reported

    Concession

    110.78 km² overlap

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

Species present

120 distinct species · 656 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

656 obs · 8 cellules
Obs. / cellule
≥ 289
289–288
71–288
19–70
< 19

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

Ecological tissue

Sample of 36 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 Sawurogab : 30 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 37 interactions GloBI sur 2 types (connectance 5.9%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
36
Interactions affichées
37
Connectance
0.059
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°

20,1°C

Annual rain

78mm

Moisture idx (CMI)

-0,94

Runoff

14mm/an

PET

1 288mm

AET

70mm

Mean slope

6,6°

Water table

1 513cm

Forest

0%

Crops

0%

Urban

0%

Protected

100%

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