HydroBASINS lev08 watershed · #4080922880
Bassin de সুরমা নদী
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 : Sunamganj, Sylhet
Sub-basin area
74,9km²
Upstream area
3 753,4km²
Discharge
425,02m³/s
Mean elev.
12m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de সুরমা নদী1909 km²
- Bassin de Gowain1770 km²
2 dept-equivalent regions (GADM L2)
- SunamganjSylhet · Bangladesh41.8 km²55.9% of basin
- SylhetSylhet · Bangladesh32.9 km²44.1% of basin
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°
24,8°C
Annual rain
3 654mm
Moisture idx (CMI)
0,61
Runoff
4 614mm/an
PET
1 434mm
AET
1 188mm
Mean slope
0,1°
Water table
4cm
Forest
1%
Crops
49%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)