HydroBASINS lev08 watershed · #1080137320
Bassin de Oued Gheris ⴰⵙⵉⴼ ⵏ ⵖⵔⵉⵙ وادي اغريس
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
648km²
Upstream area
10 426,9km²
Discharge
30,28m³/s
Mean elev.
877m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
1 dept-equivalent regions (GADM L2)
- Errachidia647.5 km²100.0% of basin
3 intersecting protected areas
Réserve de Biosphère des Oasis du Sud Marocain (RBOSM)
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
647.49 km² overlap
Oasis du Tafilalet
IUCN Not ReportedWetland of International Importance (Ramsar Site)
21.81 km² overlap
Rissani
IUCN Not ApplicablePermanent Hunting Reserve
7.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
271 distinct species · 4 228 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 22 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 Gheris ⴰⵙⵉⴼ ⵏ ⵖⵔⵉⵙ وادي اغريس : 16 espèces reliées par 32 interactions GloBI sur 4 types (connectance 13.9%, filtre Serrano α=0.2). 6 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°
20,3°C
Annual rain
92mm
Moisture idx (CMI)
-0,95
Runoff
42mm/an
PET
1 689mm
AET
76mm
Mean slope
1,4°
Water table
343cm
Forest
0%
Crops
0%
Urban
4%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)