HydroBASINS lev08 watershed · #4080015100
Bassin de Sông Mã
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 : Hoằng Hóa, Hậu Lộc, Thanh Hóa, Thiệu Hóa
Sub-basin area
179,2km²
Upstream area
29 596,7km²
Discharge
639,06m³/s
Mean elev.
6m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de Sông Mã719 km²
- Bassin de Sông Chu438 km²
4 dept-equivalent regions (GADM L2)
- 88.5 km²49.5% of basin
- 78.9 km²44.2% of basin
- 8.0 km²4.5% of basin
- 3.3 km²1.9% of basin
1 intersecting protected areas
Den Ba Trieu
IUCN VCultural and Historical Site
5.57 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
93 distinct species · 156 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 Mã : 25 espèces reliées par 22 interactions GloBI sur 4 types (connectance 6.3%, filtre Serrano α=0.2). 2 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°
24,2°C
Annual rain
1 687mm
Moisture idx (CMI)
0,20
Runoff
936mm/an
PET
1 347mm
AET
1 103mm
Mean slope
0,3°
Water table
12cm
Forest
0%
Crops
35%
Urban
29%
Protected
3%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)