HydroBASINS lev08 watershed · #4080025340
Bassin · #4080025340
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 : Chittagong, Noakhali
Sub-basin area
466,7km²
Upstream area
466,7km²
Discharge
6,45m³/s
Mean elev.
5m
Administrative coverage
2 dept-equivalent regions (GADM L2)
- ChittagongChittagong · Bangladesh302.8 km²65.0% of basin
- NoakhaliChittagong · Bangladesh117.6 km²25.3% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
53 distinct species · 260 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 · #4080025340 : 20 espèces reliées par 23 interactions GloBI sur 3 types (connectance 8.3%, filtre Serrano α=0.2). 4 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°
25,7°C
Annual rain
2 888mm
Moisture idx (CMI)
0,52
Runoff
2 213mm/an
PET
1 379mm
AET
1 050mm
Mean slope
0,1°
Water table
5cm
Forest
0%
Crops
70%
Urban
11%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)