HydroBASINS lev08 watershed · #4081050910
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, Nonghed
Sub-basin area
247km²
Upstream area
247km²
Discharge
4,11m³/s
Mean elev.
886m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 204.5 km²83.0% of basin
- 41.8 km²17.0% of basin
1 intersecting protected areas
Western Nghe An
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
205.08 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°
20,7°C
Annual rain
1 298mm
Moisture idx (CMI)
-0,05
Runoff
533mm/an
PET
1 371mm
AET
895mm
Mean slope
19,8°
Water table
710cm
Forest
1%
Crops
3%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)