HydroBASINS lev08 watershed · #4081092970
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 3 administrative regions : Bang Rakam, Lan Krabu, Muang Phitsanulok
Sub-basin area
421,7km²
Upstream area
20 667,4km²
Discharge
66,27m³/s
Mean elev.
44m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de คลองพิไกร480 km²
- Bassin de แม่น้ำยม1 km²
3 dept-equivalent regions (GADM L2)
- 347.9 km²82.8% of basin
- 71.5 km²17.0% of basin
- 0.8 km²0.2% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
335 distinct species · 8 495 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 32 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 : 24 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 40 interactions GloBI sur 3 types (connectance 7.6%, filtre Serrano α=0.2). 9 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°
27,8°C
Annual rain
1 291mm
Moisture idx (CMI)
-0,26
Runoff
234mm/an
PET
1 739mm
AET
1 022mm
Mean slope
0,0°
Water table
7cm
Forest
1%
Crops
47%
Urban
9%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)