HydroBASINS lev08 watershed · #4080016940
Bassin de Sông Cổ Chiên
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 28 administrative regions : Bình Minh, Bình Tân, Cao Lãnh, Cao Lãnh (Thành phố), Châu Thành +22
Sub-basin area
3 683,8km²
Upstream area
3 683,8km²
Discharge
89,81m³/s
Mean elev.
3m
Administrative coverage
28 dept-equivalent regions (GADM L2)
- Vũng LiêmVĩnh Long · Vietnam308.6 km²8.4% of basin
- Cái Bè305.8 km²8.3% of basin
- 285.3 km²7.8% of basin
- 264.8 km²7.2% of basin
- Càng LongTrà Vinh · Vietnam260.8 km²7.1% of basin
- 218.6 km²6.0% of basin
- 198.4 km²5.4% of basin
- 197.6 km²5.4% of basin
20 moreFull L2 list
- Long Hồ184.2 km² · 5.0%
- Mang Thít161.9 km² · 4.4%
- Lấp Vò154.8 km² · 4.2%
- Chợ Mới151.9 km² · 4.1%
- Tam Nông138.6 km² · 3.8%
- Tân Hưng120.1 km² · 3.3%
- Trà Ôn92.5 km² · 2.5%
- Chợ Lách89.6 km² · 2.4%
- Cầu Kè82.3 km² · 2.2%
- Mỏ Cày Nam79.7 km² · 2.2%
- Cao Lãnh (Thành phố)78.2 km² · 2.1%
- Mỏ Cày Bắc60.8 km² · 1.7%
- Sa Đéc56.9 km² · 1.5%
- Vĩnh Long48.0 km² · 1.3%
- Trà Vinh30.9 km² · 0.8%
- Châu Thành28.3 km² · 0.8%
- Thạnh Phú24.1 km² · 0.7%
- Bình Tân22.5 km² · 0.6%
- Lai Vung12.5 km² · 0.3%
- Bình Minh11.3 km² · 0.3%
4 intersecting protected areas
Lang Sen Wetland Reserve
IUCN IVWetland of International Importance (Ramsar Site)
34.66 km² overlap
Tram Chim
IUCN IINational Park
22.35 km² overlap
Tram Chim National Park
IUCN Not ReportedWetland of International Importance (Ramsar Site)
21.07 km² overlap
Lang Sen
IUCN Not ReportedNature Reserve
15.13 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
556 distinct species · 2 755 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 41 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 Cổ Chiên : 36 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 46 interactions GloBI sur 4 types (connectance 5.3%, filtre Serrano α=0.2). 6 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°
27,4°C
Annual rain
1 455mm
Moisture idx (CMI)
-0,02
Runoff
835mm/an
PET
1 482mm
AET
1 037mm
Mean slope
0,1°
Water table
3cm
Forest
0%
Crops
91%
Urban
18%
Protected
1%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)