HydroBASINS lev08 watershed · #4080922780
Bassin de Simsang Someshwari River
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 across 2 countries : East Garo Hills, Mymensingh, Netrakona, South Garo Hills, West Khasi Hills
Sub-basin area
904,8km²
Upstream area
2 359,1km²
Discharge
147,67m³/s
Mean elev.
260m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
5 dept-equivalent regions (GADM L2)
- 657.0 km²72.8% of basin
- 173.9 km²19.3% of basin
- NetrakonaMymensingh · Bangladesh67.4 km²7.5% of basin
- 4.4 km²0.5% of basin
- MymensinghMymensingh · Bangladesh0.2 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
662 distinct species · 7 980 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 species (selected proportionally per kingdom among those with at least one documented interaction here) to keep the graph readable. Hover for details, click to explore the full ecosystem of a species.
ℹ️ The territory contains many more species than displayed and all their documented interactions: the graph is intentionally the structural skeleton (top-N species by composite local score, edges filtered by Serrano 2009 disparity filter α=0.2).
Indicateurs du tissu écologique
Tissu écologique de Bassin de Simsang Someshwari River : 17 espèces reliées par 22 interactions GloBI sur 3 types (connectance 8.7%, filtre Serrano α=0.2). 6 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
23,9°C
Annual rain
3 331mm
Moisture idx (CMI)
0,58
Runoff
2 295mm/an
PET
1 354mm
AET
1 087mm
Mean slope
9,7°
Water table
354cm
Forest
11%
Crops
29%
Urban
2%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)