HydroBASINS lev08 watershed · #4081095860
Bassin de แม่น้ำน่าน
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 4 administrative regions : Bang Krathum, Muang Phichit, Sam Ngam, Wang Thong
Sub-basin area
375,3km²
Upstream area
28 480,3km²
Discharge
276,29m³/s
Mean elev.
61m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de ลำน้ำเข็ก2181 km²
- Bassin de แม่น้ำน่าน578 km²
4 dept-equivalent regions (GADM L2)
- 174.1 km²46.6% of basin
- Bang Krathum115.4 km²30.8% of basin
- 81.6 km²21.8% of basin
- 2.9 km²0.8% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
420 distinct species · 2 971 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 31 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 แม่น้ำน่าน : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 39 interactions GloBI sur 3 types (connectance 7.9%, filtre Serrano α=0.2). 7 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°
27,8°C
Annual rain
1 319mm
Moisture idx (CMI)
-0,25
Runoff
226mm/an
PET
1 762mm
AET
1 031mm
Mean slope
0,8°
Water table
60cm
Forest
1%
Crops
48%
Urban
2%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)