HydroBASINS lev08 watershed · #4081063440
Bassin de Sông Lam
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 3 administrative regions : Anh Sơn, Thanh Chương, Đô Lương
Sub-basin area
108,3km²
Upstream area
21 373,9km²
Discharge
426,46m³/s
Mean elev.
26m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sông Lam349 km²
- Bassin de Sông Lam148 km²
3 dept-equivalent regions (GADM L2)
- 78.5 km²72.7% of basin
- 24.3 km²22.5% of basin
- 5.1 km²4.8% of basin
1 intersecting protected areas
Western Nghe An
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
31.75 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
7 distinct species · 10 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Not enough documented interactions to build a meaningful graph for this territory.
Hydroclimate (BasinATLAS lev08)
Mean T°
24,6°C
Annual rain
1 461mm
Moisture idx (CMI)
0,04
Runoff
999mm/an
PET
1 395mm
AET
1 037mm
Mean slope
1,6°
Water table
67cm
Forest
0%
Crops
46%
Urban
27%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)