HydroBASINS lev08 watershed · #1080028960
Bassin de Oued Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ وادي 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 2 administrative regions : Guelmim, Tan-Tan
Sub-basin area
309,7km²
Upstream area
94 290km²
Discharge
240,9m³/s
Mean elev.
116m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 3 basins
2 dept-equivalent regions (GADM L2)
- Guelmim267.6 km²86.5% of basin
- Tan-Tan41.7 km²13.5% of basin
4 intersecting protected areas
Rouisset Tayssa Boulafraij Ouinskour et Oued Daraa
IUCN Not ApplicablePermanent Hunting Reserve
237.89 km² overlap
Embouchure du Draa
IUCN Not ApplicableBiological and Ecological Interest Site
163.23 km² overlap
Embouchure de l'Oued Dr'a
IUCN Not ReportedWetland of International Importance (Ramsar Site)
116.10 km² overlap
Msied - Abteh
IUCN Not ApplicablePermanent Hunting Reserve
71.34 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
95 distinct species · 216 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 Drâa ⴰⵙⵉⴼ ⵏ ⴷⵔⵄⴰ وادي درعة : 19 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 2 types (connectance 12.3%, 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°
19,7°C
Annual rain
107mm
Moisture idx (CMI)
-0,92
Runoff
50mm/an
PET
1 283mm
AET
93mm
Mean slope
2,3°
Water table
742cm
Forest
0%
Crops
0%
Urban
0%
Protected
97%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)