HydroBASINS lev08 watershed · #4081050850
Bassin de Nậm Nơn
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 2 administrative regions across 2 countries : Kỳ Sơn, Xamtay
Sub-basin area
119,3km²
Upstream area
7 278,5km²
Discharge
107,51m³/s
Mean elev.
730m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de ນຳ້ກາ Sông Cả481 km²
- Bassin de ນຳ້ກາ Sông Cả417 km²
2 dept-equivalent regions (GADM L2)
- 103.0 km²86.6% of basin
- 15.9 km²13.4% of basin
1 intersecting protected areas
Western Nghe An
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
103.86 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
0 distinct species · 0 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°
21,3°C
Annual rain
1 195mm
Moisture idx (CMI)
-0,13
Runoff
527mm/an
PET
1 382mm
AET
878mm
Mean slope
19,7°
Water table
717cm
Forest
12%
Crops
1%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)