HydroBASINS lev08 watershed · #4081102730
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, K. Mae Poen, Mae Wong, Pang Sila Thong, Umphang
Sub-basin area
686,5km²
Upstream area
686,6km²
Discharge
7,49m³/s
Mean elev.
947m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
5 dept-equivalent regions (GADM L2)
- 680.5 km²99.5% of basin
- 1.1 km²0.2% of basin
- 1.0 km²0.1% of basin
- 0.9 km²0.1% of basin
- 0.6 km²0.1% of basin
5 intersecting protected areas
Um Phang
IUCN IaWildlife Sanctuary
393.20 km² overlap
Thungyai-Huai Kha Khaeng Wildlife Sanctuaries
IUCN Not ApplicableWorld Heritage Site (natural or mixed)
263.02 km² overlap
Huai Kha Khaeng
IUCN IaWildlife Sanctuary
141.14 km² overlap
Thungyai Naresuan
IUCN IaWildlife Sanctuary
116.09 km² overlap
Mae Wong
IUCN IINational Park
1.84 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
190 distinct species · 454 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 24 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 : 23 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 19 interactions GloBI sur 3 types (connectance 6.9%, filtre Serrano α=0.2). 1 bulle taxonomique (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°
23,0°C
Annual rain
1 375mm
Moisture idx (CMI)
-0,14
Runoff
393mm/an
PET
1 589mm
AET
993mm
Mean slope
12,6°
Water table
478cm
Forest
61%
Crops
6%
Urban
0%
Protected
95%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)