HydroBASINS lev08 watershed · #4081124690
Bassin de แม่น้ำนครนายก
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 : Ban Sang, Bang Nam Prieo, Muang Nakhon Nayok, Ongkharak
Sub-basin area
122km²
Upstream area
3 454,3km²
Discharge
77,49m³/s
Mean elev.
4m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de คลองท่าด่าน899 km²
- Bassin de แม่น้ำนครนายก368 km²
4 dept-equivalent regions (GADM L2)
- 58.8 km²48.4% of basin
- 35.1 km²28.9% of basin
- 23.3 km²19.2% of basin
- 4.3 km²3.6% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
93 distinct species · 402 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 แม่น้ำนครนายก : 25 espèces dont 2 patrimoniales (LR IUCN CR/EN/VU) reliées par 34 interactions GloBI sur 3 types (connectance 7.3%, filtre Serrano α=0.2). 6 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 602mm
Moisture idx (CMI)
-0,03
Runoff
742mm/an
PET
1 651mm
AET
1 106mm
Mean slope
0,0°
Water table
1cm
Forest
11%
Crops
46%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)