HydroBASINS lev08 watershed · #4081067560
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 4 administrative regions : K. Phu Pieng, Mae Charim, Muang Nan, Wiang Sa
Sub-basin area
430km²
Upstream area
5 810,1km²
Discharge
80,28m³/s
Mean elev.
297m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de ลำน้ำสมุน603 km²
- Bassin de แม่น้ำน่าน411 km²
4 dept-equivalent regions (GADM L2)
- 262.2 km²61.2% of basin
- 122.6 km²28.6% of basin
- 43.8 km²10.2% of basin
- 0.1 km²0.0% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
75 distinct species · 150 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 25 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 : 22 espèces reliées par 25 interactions GloBI sur 4 types (connectance 8.3%, 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°
25,4°C
Annual rain
1 284mm
Moisture idx (CMI)
-0,26
Runoff
325mm/an
PET
1 732mm
AET
997mm
Mean slope
4,3°
Water table
176cm
Forest
15%
Crops
11%
Urban
6%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)