HydroBASINS lev08 watershed · #4081089280
Bassin de แม่น้ำแควน้อย
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 7 administrative regions : Chat Trakan, Muang Phitsanulok, Nakhon Thai, Phrom Phiram, Thong Saen Khan +2
Sub-basin area
1 619,6km²
Upstream area
4 691,4km²
Discharge
40,63m³/s
Mean elev.
199m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de คลองน้ำภาค944 km²
- Bassin de แม่น้ำแควน้อย410 km²
7 dept-equivalent regions (GADM L2)
- 783.3 km²48.5% of basin
- Chat Trakan410.8 km²25.4% of basin
- 292.2 km²18.1% of basin
- Nakhon Thai89.9 km²5.6% of basin
- Phrom Phiram35.6 km²2.2% of basin
- 2.3 km²0.1% of basin
- 0.2 km²0.0% of basin
1 intersecting protected areas
Phu Miang - Phu Thong
IUCN IaWildlife Sanctuary
2.86 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
185 distinct species · 652 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 34 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 แม่น้ำแควน้อย : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 37 interactions GloBI sur 3 types (connectance 6.6%, 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°
26,9°C
Annual rain
1 297mm
Moisture idx (CMI)
-0,27
Runoff
264mm/an
PET
1 771mm
AET
1 029mm
Mean slope
4,5°
Water table
297cm
Forest
33%
Crops
27%
Urban
1%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)