HydroBASINS lev08 watershed · #4080890950
Bassin de Gandak Nahar
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 4 administrative regions : Deoria, Gopalganj, Kushinagar, Siwan
Sub-basin area
580,3km²
Upstream area
580,3km²
Discharge
7,58m³/s
Mean elev.
72m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 232.3 km²40.1% of basin
- 211.1 km²36.4% of basin
- Deoria71.1 km²12.3% of basin
- 64.8 km²11.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
9 distinct species · 13 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°
25,4°C
Annual rain
1 048mm
Moisture idx (CMI)
-0,35
Runoff
411mm/an
PET
1 618mm
AET
787mm
Mean slope
0,0°
Water table
7cm
Forest
0%
Crops
98%
Urban
8%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)