HydroBASINS lev08 watershed · #1080172100
Bassin de Oued Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ واد درعة
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 : Ouarzazate
Sub-basin area
1 336,1km²
Upstream area
23 953,2km²
Discharge
68,48m³/s
Mean elev.
709m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued El Faija2117 km²
- Bassin de Oued Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ واد درعة1125 km²
1 dept-equivalent regions (GADM L2)
- Ouarzazate1334.6 km²100.0% of basin
5 intersecting protected areas
Réserve de Biosphère des Oasis du Sud Marocain (RBOSM)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
1334.61 km² overlap
Tamagroute
IUCN Not ApplicablePermanent Hunting Reserve
939.18 km² overlap
Iriqui
IUCN Not ApplicablePermanent Hunting Reserve
364.10 km² overlap
Moyenne Dr'a
IUCN Not ReportedWetland of International Importance (Ramsar Site)
179.58 km² overlap
Oued Mird
IUCN Not ApplicableBiological and Ecological Interest Site
5.40 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
276 distinct species · 2 165 observations
Source: GBIF Occurrence snapshot 2026-05-01.
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).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Oued Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ واد درعة : 24 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 39 interactions GloBI sur 5 types (connectance 9.6%, 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°
23,0°C
Annual rain
48mm
Moisture idx (CMI)
-0,97
Runoff
50mm/an
PET
1 928mm
AET
37mm
Mean slope
3,4°
Water table
552cm
Forest
0%
Crops
4%
Urban
2%
Protected
49%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)