HydroBASINS lev08 watershed · #4080922680
Bassin de Umiew
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 : East Khasi Hills, Sunamganj
Sub-basin area
550,2km²
Upstream area
550,4km²
Discharge
93,91m³/s
Mean elev.
1 197m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
2 dept-equivalent regions (GADM L2)
- 505.3 km²92.0% of basin
- SunamganjSylhet · Bangladesh43.7 km²8.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 591 distinct species · 18 215 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 16 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 Umiew : 11 espèces reliées par 18 interactions GloBI sur 3 types (connectance 15.0%, filtre Serrano α=0.2). 5 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°
18,4°C
Annual rain
5 189mm
Moisture idx (CMI)
0,74
Runoff
5 223mm/an
PET
1 134mm
AET
1 004mm
Mean slope
12,3°
Water table
397cm
Forest
30%
Crops
19%
Urban
4%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)