HydroBASINS lev08 watershed · #1080066020
Bassin de وادي غريانة
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 27 administrative regions : Ariana Médina, Bab Souika, Bardo, Ben Arous, Douar Hicher +22
Sub-basin area
219,5km²
Upstream area
219,6km²
Discharge
0,79m³/s
Mean elev.
53m
Administrative coverage
27 dept-equivalent regions (GADM L2)
- 44.8 km²20.4% of basin
- 34.8 km²15.8% of basin
- 24.3 km²11.1% of basin
- 19.2 km²8.8% of basin
- 13.3 km²6.0% of basin
- 12.3 km²5.6% of basin
- 12.2 km²5.6% of basin
- 9.0 km²4.1% of basin
19 moreFull L2 list
- Manouba8.1 km² · 3.7%
- Ettadhamen8.1 km² · 3.7%
- El Mourouj7.1 km² · 3.2%
- Omrane Supérieur6.9 km² · 3.1%
- El Ouardia6.1 km² · 2.8%
- Sijoumi3.3 km² · 1.5%
- Ezzouhour2.6 km² · 1.2%
- Omrane1.8 km² · 0.8%
- El Menzah1.5 km² · 0.7%
- El Tahrir1.3 km² · 0.6%
- Douar Hicher0.8 km² · 0.4%
- Ariana Médina0.5 km² · 0.2%
- Mornag0.4 km² · 0.2%
- Sidi El Béchir0.3 km² · 0.1%
- Kabaria0.2 km² · 0.1%
- Bab Souika0.2 km² · 0.1%
- Oued Ellil0.2 km² · 0.1%
- Ben Arous0.1 km² · 0.0%
- Médina0.0 km² · 0.0%
4 intersecting protected areas
Sebkhet Sejoumi
IUCN Not ReportedWetland Zone of National Importance
24.03 km² overlap
Sebkhet Sejoumi
IUCN Not ReportedWetland of International Importance (Ramsar Site)
24.03 km² overlap
Wetland of International Importance (Ramsar Site)
0.30 km² overlap
Wetland Zone of National Importance
0.30 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
256 distinct species · 2 238 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 وادي غريانة : 29 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 44 interactions GloBI sur 3 types (connectance 7.4%, 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°
17,8°C
Annual rain
454mm
Moisture idx (CMI)
-0,64
Runoff
113mm/an
PET
1 246mm
AET
386mm
Mean slope
1,8°
Water table
240cm
Forest
0%
Crops
33%
Urban
77%
Protected
13%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)