HydroBASINS lev08 watershed · #4081113180
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 5 administrative regions : Ban Rai, Sangkhla Buri, Si Sawat, Thong Pha Phum, Umphang
Sub-basin area
1 529,5km²
Upstream area
5 692,9km²
Discharge
57,99m³/s
Mean elev.
761m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de แม่น้ำแควน้อย755 km²
- Bassin de แม่น้ำแควน้อย116 km²
5 dept-equivalent regions (GADM L2)
- 506.3 km²33.2% of basin
- 443.2 km²29.1% of basin
- 226.9 km²14.9% of basin
- 185.4 km²12.2% of basin
- 162.2 km²10.6% of basin
5 intersecting protected areas
Thungyai-Huai Kha Khaeng Wildlife Sanctuaries
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
1355.68 km² overlap
Thungyai Naresuan
IUCN IaWildlife Sanctuary
1181.34 km² overlap
Huai Kha Khaeng
IUCN IaWildlife Sanctuary
182.18 km² overlap
Khuen Si Nakarin
IUCN IINational Park
157.49 km² overlap
Khlong Lamngu
IUCN IINational Park
3.04 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
539 distinct species · 2 362 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 20 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 : 18 espèces reliées par 16 interactions GloBI sur 3 types (connectance 8.4%, 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°
23,5°C
Annual rain
1 640mm
Moisture idx (CMI)
0,03
Runoff
635mm/an
PET
1 591mm
AET
1 030mm
Mean slope
13,8°
Water table
489cm
Forest
45%
Crops
3%
Urban
0%
Protected
100%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)