HydroBASINS lev08 watershed · #4080018990
Bassin de Donsak River
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 10 administrative regions : Ban Na San, Don Sak, K. Nophi Tam, Kanchanadit, Khanom +5
Sub-basin area
2 777,2km²
Upstream area
2 777,2km²
Discharge
0,89m³/s
Mean elev.
120m
Administrative coverage
10 dept-equivalent regions (GADM L2)
- 711.0 km²25.7% of basin
- Sichon678.3 km²24.5% of basin
- Don Sak354.9 km²12.8% of basin
- Khanom331.9 km²12.0% of basin
- 238.0 km²8.6% of basin
- 142.9 km²5.2% of basin
- 84.5 km²3.1% of basin
- 47.6 km²1.7% of basin
2 moreFull L2 list
- Ban Na San0.8 km² · 0.0%
- Muang Surat Thani0.1 km² · 0.0%
6 intersecting protected areas
Environmental Protected Area
451.42 km² overlap
Khao Nan
IUCN IINational Park
165.22 km² overlap
Namtok Si khid
IUCN IINational Park
141.44 km² overlap
Mu Ko Ang Thong MNP
IUCN VIWetland of International Importance (Ramsar Site)
40.41 km² overlap
Muko Ang Thong
IUCN IIMarine National Park
40.08 km² overlap
Tai Romyen
IUCN IINational Park
34.57 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
590 distinct species · 2 514 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 30 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 Donsak River : 26 espèces reliées par 32 interactions GloBI sur 3 types (connectance 7.4%, filtre Serrano α=0.2). 4 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°
26,5°C
Annual rain
1 948mm
Moisture idx (CMI)
0,15
Runoff
1 055mm/an
PET
1 651mm
AET
1 230mm
Mean slope
6,8°
Water table
264cm
Forest
23%
Crops
28%
Urban
7%
Protected
14%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)