HydroBASINS lev08 watershed · #1080137150
Bassin de Oued Dades
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 2 administrative regions : Errachidia, Ouarzazate
Sub-basin area
1 585,4km²
Upstream area
1 585,4km²
Discharge
20,12m³/s
Mean elev.
2 369m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- Ouarzazate1471.8 km²92.9% of basin
- Errachidia112.3 km²7.1% of basin
3 intersecting protected areas
Réserve de Biosphère des Oasis du Sud Marocain (RBOSM)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
1572.67 km² overlap
Assoul
IUCN Not ApplicablePermanent Hunting Reserve
470.80 km² overlap
Grotte d'Akhyam
IUCN Not ApplicableBiological and Ecological Interest Site
111.73 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
599 distinct species · 20 047 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Oued Dades : 19 espèces reliées par 28 interactions GloBI sur 2 types (connectance 10.1%, filtre Serrano α=0.2). 5 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°
10,2°C
Annual rain
406mm
Moisture idx (CMI)
-0,68
Runoff
221mm/an
PET
1 314mm
AET
344mm
Mean slope
13,9°
Water table
696cm
Forest
0%
Crops
0%
Urban
2%
Protected
19%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)