HydroBASINS lev08 watershed · #4081022130
Bassin de Sông Lục Nam
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 : Ba Chẽ, Hoành Bồ, Lộc Bình, Sơn Động, Đình Lập
Sub-basin area
867,6km²
Upstream area
867,8km²
Discharge
19,43m³/s
Mean elev.
251m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 426.5 km²49.3% of basin
- 423.9 km²49.0% of basin
- Lộc BìnhLạng Sơn · Vietnam13.2 km²1.5% of basin
- 1.3 km²0.1% of basin
- Ba Chẽ0.4 km²0.0% of basin
1 intersecting protected areas
Tay Yen Tu
IUCN IVNature Reserve
52.84 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
17 distinct species · 21 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°
22,2°C
Annual rain
1 558mm
Moisture idx (CMI)
0,19
Runoff
764mm/an
PET
1 253mm
AET
1 023mm
Mean slope
11,1°
Water table
406cm
Forest
1%
Crops
4%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)