HydroBASINS lev08 watershed · #1080025250
Bassin de No 2 River
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 5 administrative regions : Moyamba, Port Loko, Tonkolili, Western Rural, Western Urban
Sub-basin area
2 153,4km²
Upstream area
2 153,4km²
Discharge
7m³/s
Mean elev.
62m
Administrative coverage
5 dept-equivalent regions (GADM L2)
- 772.6 km²36.0% of basin
- 634.7 km²29.6% of basin
- 472.1 km²22.0% of basin
- 108.5 km²5.1% of basin
- 82.7 km²3.9% of basin
10 intersecting protected areas
Sierra Leone River Estuary
IUCN Not ReportedMarine Protected Area
183.03 km² overlap
Western Area Peninsula Forest
IUCN Not ReportedNational Park
179.24 km² overlap
Western Area
IUCN IINo or Non - Hunting Forest Reserve
164.13 km² overlap
Yawri Bay
IUCN Not ReportedMarine Protected Area
14.82 km² overlap
Fabina
IUCN Not ReportedForest Reserve
8.65 km² overlap
Occra Hills
IUCN Not ReportedForest Reserve
3.52 km² overlap
Sierra Leone River Estuary
IUCN Not ReportedWetland of International Importance (Ramsar Site)
2.23 km² overlap
Moku Hills
IUCN Not ReportedForest Reserve
1.09 km² overlap
IMATT
IUCN Not ReportedForest Reserve
0.12 km² overlap
1 more protected areassorted by overlap area
South Ridge
IUCN Not ReportedForest Reserve
0.05 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 152 distinct species · 6 250 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 16 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 No 2 River : 15 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 13 interactions GloBI sur 2 types (connectance 10.8%, 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°
25,9°C
Annual rain
3 264mm
Moisture idx (CMI)
0,55
Runoff
2 104mm/an
PET
1 422mm
AET
1 078mm
Mean slope
3,5°
Water table
95cm
Forest
32%
Crops
3%
Urban
13%
Protected
10%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)