HydroBASINS lev08 watershed · #4080962130
Bassin de পুরাতন ব্রহ্মপুত্র
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 : Gazipur, Mymensingh, Narayanganj, Narsingdi
Sub-basin area
956,4km²
Upstream area
4 953,9km²
Discharge
243,93m³/s
Mean elev.
12m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de সুতিয়া নদী1508 km²
- Bassin de ব্রহ্মপুত্র66 km²
4 dept-equivalent regions (GADM L2)
- GazipurDhaka · Bangladesh507.9 km²53.2% of basin
- NarsingdiDhaka · Bangladesh238.2 km²25.0% of basin
- NarayanganjDhaka · Bangladesh204.1 km²21.4% of basin
- MymensinghMymensingh · Bangladesh4.1 km²0.4% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
324 distinct species · 9 822 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 26 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 পুরাতন ব্রহ্মপুত্র : 17 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 3 types (connectance 12.3%, filtre Serrano α=0.2). 9 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°
25,8°C
Annual rain
2 073mm
Moisture idx (CMI)
0,30
Runoff
1 471mm/an
PET
1 451mm
AET
1 090mm
Mean slope
0,2°
Water table
7cm
Forest
0%
Crops
72%
Urban
58%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)