HydroBASINS lev08 watershed · #4081058390
Bassin de แม่น้ำยม
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 : Chiang Kham, Chun, Pong, Song Kwae
Sub-basin area
579,8km²
Upstream area
579,9km²
Discharge
5,65m³/s
Mean elev.
528m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
4 dept-equivalent regions (GADM L2)
- 541.0 km²93.6% of basin
- 21.0 km²3.6% of basin
- 11.2 km²1.9% of basin
- 4.8 km²0.8% of basin
3 intersecting protected areas
Doi Phachang
IUCN IaWildlife Sanctuary
86.47 km² overlap
Phu Zang
IUCN IINational Park
84.93 km² overlap
Wiang Lo
IUCN IaWildlife Sanctuary
74.45 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
247 distinct species · 840 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 47 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 แม่น้ำยม : 45 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 46 interactions GloBI sur 3 types (connectance 4.3%, filtre Serrano α=0.2). 2 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
1 403mm
Moisture idx (CMI)
-0,17
Runoff
314mm/an
PET
1 682mm
AET
1 018mm
Mean slope
8,0°
Water table
405cm
Forest
18%
Crops
17%
Urban
4%
Protected
42%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)