HydroBASINS lev08 watershed · #4081015380
Bassin de Sông Lô
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 6 administrative regions : Hàm Yên, Sơn Dương, Tuyên Quang, Yên Bình, Yên Sơn +1
Sub-basin area
647,1km²
Upstream area
27 797,7km²
Discharge
813,48m³/s
Mean elev.
119m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sông Lô1033 km²
- Bassin de Sông Gâm649 km²
6 dept-equivalent regions (GADM L2)
- 367.0 km²56.9% of basin
- 143.9 km²22.3% of basin
- Tuyên QuangTuyên Quang · Vietnam118.9 km²18.4% of basin
- Đoan HùngPhú Thọ · Vietnam14.6 km²2.3% of basin
- 0.7 km²0.1% of basin
- 0.3 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
73 distinct species · 117 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 Sông Lô : 13 espèces reliées par 9 interactions GloBI sur 3 types (connectance 9.9%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
22,8°C
Annual rain
1 663mm
Moisture idx (CMI)
0,19
Runoff
916mm/an
PET
1 347mm
AET
1 095mm
Mean slope
8,7°
Water table
315cm
Forest
0%
Crops
22%
Urban
16%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)