HydroBASINS lev08 watershed · #1080131820
Bassin de Ourika نهر أوريكا
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 : Al Haouz, Marrakech, Ouarzazate, Taroudannt
Sub-basin area
946,9km²
Upstream area
946,9km²
Discharge
3,15m³/s
Mean elev.
1 771m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 851.8 km²90.0% of basin
- Ouarzazate50.8 km²5.4% of basin
- Taroudannt37.4 km²4.0% of basin
- 6.0 km²0.6% of basin
6 intersecting protected areas
Parc National de Toubkal
IUCN IINational Park
144.40 km² overlap
Toubkal - Ouirgane
IUCN Not ApplicablePermanent Hunting Reserve
87.21 km² overlap
Toubkal II
IUCN Not ApplicablePermanent Hunting Reserve
82.10 km² overlap
Réserve de Biosphère des Oasis du Sud Marocain (RBOSM)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
32.01 km² overlap
Toubkal III
IUCN Not ApplicablePermanent Hunting Reserve
31.75 km² overlap
Grouka
IUCN Not ApplicablePermanent Hunting Reserve
30.87 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 507 distinct species · 39 537 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Ourika نهر أوريكا : 26 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 52 interactions GloBI sur 5 types (connectance 9.8%, filtre Serrano α=0.2). 7 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
12,6°C
Annual rain
534mm
Moisture idx (CMI)
-0,59
Runoff
75mm/an
PET
1 378mm
AET
445mm
Mean slope
17,3°
Water table
830cm
Forest
14%
Crops
44%
Urban
5%
Protected
22%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)