HydroBASINS lev08 watershed · #1080027110
Bassin de Nougouna
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 7 administrative regions : Dakar, Guédiawaye, Mbour, Pikine, Rufisque +2
Sub-basin area
826,5km²
Upstream area
826,5km²
Discharge
0m³/s
Mean elev.
23m
Administrative coverage
7 dept-equivalent regions (GADM L2)
- RufisqueDakar · Senegal381.8 km²46.4% of basin
- 121.4 km²14.7% of basin
- 92.5 km²11.2% of basin
- 82.8 km²10.1% of basin
- 82.4 km²10.0% of basin
- GuédiawayeDakar · Senegal18.8 km²2.3% of basin
- 4.0 km²0.5% of basin
7 intersecting protected areas
AMP Gorée
IUCN VIMarine Protected Area
10.44 km² overlap
Popenguine
IUCN IVNature Reserve
6.82 km² overlap
Technolpole
IUCN VIUrban Nature Reserve
6.48 km² overlap
AMP Kayar
IUCN VIMarine Protected Area
2.20 km² overlap
AMP Somone
IUCN VIMarine Protected Area
1.92 km² overlap
Wetland of International Importance (Ramsar Site)
1.00 km² overlap
Iles de la Madeleine
IUCN IINational Park
0.45 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
2 207 distinct species · 87 483 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 Nougouna : 18 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 43 interactions GloBI sur 3 types (connectance 14.3%, filtre Serrano α=0.2). 7 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°
25,4°C
Annual rain
484mm
Moisture idx (CMI)
-0,69
Runoff
3mm/an
PET
1 584mm
AET
408mm
Mean slope
0,8°
Water table
152cm
Forest
0%
Crops
24%
Urban
49%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)