Ontologia

HydroBASINS lev08 watershed · #1080107210

Bassin de Oued Mellah

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 3 administrative regions : Ben Slimane, Casablanca, Settat

Pfafstetter: 15170042

Sub-basin area

1 821,3km²

Upstream area

1 821,3km²

Discharge

2,28m³/s

Mean elev.

362m

Administrative coverage

Hydrographic chain

▼ Drains into

Bassin de Oued Mellah22 km²

▲ Receives from 0 basins

Source / headwater (no upstream basin)

3 dept-equivalent regions (GADM L2)

3 intersecting protected areas

  • Grand Casablanca

    IUCN Not Applicable

    Permanent Hunting Reserve

    62.16 km² overlap

  • Al Gara

    IUCN Not Applicable

    Permanent Hunting Reserve

    20.16 km² overlap

  • Berrechid

    IUCN Not Applicable

    Permanent Hunting Reserve

    16.54 km² overlap

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

Species present

411 distinct species · 56 213 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Densité d'observations

56 213 obs · 44 cellules
Obs. / cellule
≥ 47 676
1 015–47 675
42–1 014
11–41
< 11

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

Ecological tissue

Sample of 29 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 Oued Mellah : 22 espèces reliées par 59 interactions GloBI sur 4 types (connectance 14.5%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées
29
Interactions affichées
59
Connectance
0.145
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°

17,6°C

Annual rain

390mm

Moisture idx (CMI)

-0,73

Runoff

47mm/an

PET

1 432mm

AET

330mm

Mean slope

1,4°

Water table

201cm

Forest

0%

Crops

95%

Urban

7%

Protected

0%

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