HydroBASINS lev08 watershed · #4080014520
Bassin de Sông Hà Cối
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 : Bình Liêu, Hải Hà, Móng Cái, Tiên Yên, Vân Đồn +1
Sub-basin area
843,4km²
Upstream area
843,4km²
Discharge
2,46m³/s
Mean elev.
173m
Administrative coverage
6 dept-equivalent regions (GADM L2)
- 364.7 km²43.4% of basin
- 278.2 km²33.1% of basin
- 135.4 km²16.1% of basin
- 20.1 km²2.4% of basin
- Bình Liêu5.2 km²0.6% of basin
- 0.0 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
272 distinct species · 427 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 11 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 Hà Cối : 11 espèces reliées par 6 interactions GloBI sur 2 types (connectance 10.9%, 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°
22,4°C
Annual rain
2 258mm
Moisture idx (CMI)
0,45
Runoff
1 227mm/an
PET
1 243mm
AET
1 104mm
Mean slope
7,9°
Water table
260cm
Forest
3%
Crops
20%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)