HydroBASINS lev08 watershed · #4081090460
Bassin de ลำน้ำยมสายเก่า
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 : Bang Rakam, Kong Krailat, Muang Phitsanulok, Muang Sukhothai, Phichai +6
Sub-basin area
1 113,7km²
Upstream area
1 113,7km²
Discharge
7,33m³/s
Mean elev.
50m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
11 dept-equivalent regions (GADM L2)
- Phrom Phiram301.8 km²27.2% of basin
- 208.5 km²18.8% of basin
- 197.7 km²17.8% of basin
- 191.6 km²17.3% of basin
- 67.4 km²6.1% of basin
- 55.4 km²5.0% of basin
- 43.1 km²3.9% of basin
- 21.8 km²2.0% of basin
3 moreFull L2 list
- Muang Sukhothai12.2 km² · 1.1%
- Si Satchanalai6.7 km² · 0.6%
- Tron3.9 km² · 0.4%
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
185 distinct species · 2 289 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 33 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 ลำน้ำยมสายเก่า : 26 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 43 interactions GloBI sur 3 types (connectance 7.7%, filtre Serrano α=0.2). 8 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°
27,5°C
Annual rain
1 303mm
Moisture idx (CMI)
-0,26
Runoff
209mm/an
PET
1 762mm
AET
1 024mm
Mean slope
0,0°
Water table
6cm
Forest
1%
Crops
51%
Urban
3%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)