HydroBASINS lev08 watershed · #4081076770
Bassin de Sông Rào Nậy
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 3 administrative regions : Bố Trạch, Minh Hóa, Tuyên Hóa
Sub-basin area
419,8km²
Upstream area
942,5km²
Discharge
36,49m³/s
Mean elev.
278m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin · #4081079320109 km²
- Bassin · #408107939011 km²
3 dept-equivalent regions (GADM L2)
- 402.9 km²96.3% of basin
- 13.9 km²3.3% of basin
- 1.7 km²0.4% of basin
2 intersecting protected areas
Phong Nha-Ke Bang National Park and Hin Nam No National Park
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1.09 km² overlap
Phong Nha-Ke Bang
IUCN IINational Park
1.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
210 distinct species · 299 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 37 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 Rào Nậy : 32 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 33 interactions GloBI sur 4 types (connectance 5.0%, filtre Serrano α=0.2). 5 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°
24,1°C
Annual rain
2 491mm
Moisture idx (CMI)
0,45
Runoff
1 304mm/an
PET
1 370mm
AET
1 243mm
Mean slope
12,2°
Water table
450cm
Forest
26%
Crops
40%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)