HydroBASINS lev08 watershed · #4081046220
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 12 administrative regions : Bá Thước, Cẩm Thủy, Hoằng Hóa, Hà Trung, Hậu Lộc +7
Sub-basin area
718,8km²
Upstream area
21 702,5km²
Discharge
457,29m³/s
Mean elev.
73m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Sông Mã2393 km²
- Bassin de Sông Bưởi1732 km²
12 dept-equivalent regions (GADM L2)
- 306.6 km²42.8% of basin
- 164.0 km²22.9% of basin
- 72.4 km²10.1% of basin
- 40.0 km²5.6% of basin
- 35.4 km²4.9% of basin
- 32.3 km²4.5% of basin
- 25.9 km²3.6% of basin
- 16.1 km²2.2% of basin
4 moreFull L2 list
- Bá Thước9.2 km² · 1.3%
- Cẩm Thủy9.1 km² · 1.3%
- Lang Chánh3.0 km² · 0.4%
- Thạch Thành2.6 km² · 0.4%
2 intersecting protected areas
Den Ba Trieu
IUCN VCultural and Historical Site
5.62 km² overlap
Sen Tam Quy
IUCN IVNature Reserve
2.18 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
48 distinct species · 77 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 21 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 : 20 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 18 interactions GloBI sur 3 types (connectance 8.6%, 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°
23,9°C
Annual rain
1 744mm
Moisture idx (CMI)
0,22
Runoff
955mm/an
PET
1 354mm
AET
1 108mm
Mean slope
5,2°
Water table
226cm
Forest
1%
Crops
31%
Urban
4%
Protected
4%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)