HydroBASINS lev08 watershed · #4081078830
Bassin de แม่น้ำน่าน
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 1 administrative regions : Tha Pla
Sub-basin area
226,4km²
Upstream area
13 211,5km²
Discharge
150,23m³/s
Mean elev.
306m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de แม่น้ำน่าน171 km²
- Bassin de แม่น้ำน่าน141 km²
1 intersecting protected areas
Lam Nam Nan
IUCN IINational Park
147.40 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
83 distinct species · 100 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 17 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 แม่น้ำน่าน : 14 espèces reliées par 14 interactions GloBI sur 3 types (connectance 10.3%, filtre Serrano α=0.2). 3 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°
25,9°C
Annual rain
1 256mm
Moisture idx (CMI)
-0,29
Runoff
279mm/an
PET
1 776mm
AET
1 005mm
Mean slope
6,9°
Water table
276cm
Forest
29%
Crops
5%
Urban
0%
Protected
65%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)