HydroBASINS lev08 watershed · #4081057710
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 11 administrative regions across 2 countries : Bo Klue, Chalermphrakiet, Chiang Klang, Hongsa, Ngeun +6
Sub-basin area
1 776,4km²
Upstream area
1 776,4km²
Discharge
27,15m³/s
Mean elev.
772m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
11 dept-equivalent regions (GADM L2)
- 657.9 km²37.1% of basin
- 604.8 km²34.1% of basin
- 315.6 km²17.8% of basin
- 98.3 km²5.5% of basin
- 40.0 km²2.3% of basin
- 22.4 km²1.3% of basin
- 21.0 km²1.2% of basin
- 6.3 km²0.4% of basin
1 intersecting protected areas
Doi Phukha
IUCN IINational Park
647.39 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
511 distinct species · 1 424 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 : 35 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 42 interactions GloBI sur 3 types (connectance 5.4%, 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°
22,9°C
Annual rain
1 364mm
Moisture idx (CMI)
-0,16
Runoff
459mm/an
PET
1 632mm
AET
1 006mm
Mean slope
13,7°
Water table
488cm
Forest
8%
Crops
4%
Urban
2%
Protected
37%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)