HydroBASINS lev08 watershed · #4081003490
Bassin · #4081003490
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 : Bắc Quang, Chiêm Hóa, Hàm Yên, Lâm Bình, Nà Hang
Sub-basin area
731,5km²
Upstream area
731,8km²
Discharge
26,74m³/s
Mean elev.
368m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 476.5 km²65.3% of basin
- 184.3 km²25.3% of basin
- 60.1 km²8.2% of basin
- Nà HangTuyên Quang · Vietnam7.3 km²1.0% of basin
- 1.3 km²0.2% of basin
1 intersecting protected areas
Cham Chu
IUCN Not ReportedNature Reserve
60.62 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
22 distinct species · 32 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°
22,0°C
Annual rain
1 790mm
Moisture idx (CMI)
0,26
Runoff
1 138mm/an
PET
1 328mm
AET
1 102mm
Mean slope
14,2°
Water table
525cm
Forest
0%
Crops
4%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)