HydroBASINS lev08 watershed · #1080147610
Bassin de Oued el Ma'der
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 : Errachidia
Sub-basin area
342,7km²
Upstream area
10 903km²
Discharge
9,41m³/s
Mean elev.
709m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Oued Alnif3179 km²
- Bassin · #10801489406 km²
1 dept-equivalent regions (GADM L2)
- Errachidia342.3 km²100.0% of basin
2 intersecting protected areas
Rissani
IUCN Not ApplicablePermanent Hunting Reserve
342.34 km² overlap
Réserve de Biosphère des Oasis du Sud Marocain (RBOSM)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
342.34 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
58 distinct species · 106 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 el Ma'der : 22 espèces reliées par 20 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
22,2°C
Annual rain
50mm
Moisture idx (CMI)
-0,97
Runoff
30mm/an
PET
1 836mm
AET
39mm
Mean slope
3,6°
Water table
485cm
Forest
0%
Crops
0%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)