HydroBASINS lev08 watershed · #4080911280
Bassin de Phalgu
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 : Nalanda, Patna
Sub-basin area
40,5km²
Upstream area
4 385,8km²
Discharge
64,35m³/s
Mean elev.
48m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Phalgu839 km²
- Bassin de Nonai Nadi399 km²
2 dept-equivalent regions (GADM L2)
- 22.0 km²54.6% of basin
- 18.3 km²45.4% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
25 distinct species · 41 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 14 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 Phalgu : 14 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 9 interactions GloBI sur 3 types (connectance 9.9%, filtre Serrano α=0.2).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydroclimate (BasinATLAS lev08)
Mean T°
26,1°C
Annual rain
874mm
Moisture idx (CMI)
-0,45
Runoff
413mm/an
PET
1 604mm
AET
733mm
Mean slope
0,0°
Water table
9cm
Forest
0%
Crops
89%
Urban
21%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)