HydroBASINS lev08 watershed · #4080045250
Bassin de 天竜川
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 3 administrative regions : Hamamatsu, Iwata, Mori
Sub-basin area
324,8km²
Upstream area
5 154,9km²
Discharge
171,43m³/s
Mean elev.
161m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de 水窪川340 km²
- Bassin de 気田川335 km²
3 dept-equivalent regions (GADM L2)
- 244.5 km²75.3% of basin
- 78.2 km²24.1% of basin
- MoriShizuoka · Japan1.9 km²0.6% of basin
11 intersecting protected areas
Tokaishizenhodohokuen
IUCN IVPrefectural Wildlife Protection Area
12.30 km² overlap
Tenryu-Okumikawa
IUCN VQuasi National Park
7.51 km² overlap
Hunagiradamuko
IUCN IVPrefectural Wildlife Protection Area
3.22 km² overlap
Kenritsushinrinkoen
IUCN IVPrefectural Wildlife Protection Area
2.98 km² overlap
Tenryugawaiseiensyunada
IUCN IVPrefectural Wildlife Protection Area
2.49 km² overlap
Ensyunada
IUCN IVPrefectural Wildlife Protection Area
1.59 km² overlap
Iwatabara
IUCN IVPrefectural Wildlife Protection Area
1.29 km² overlap
Shibukawa
IUCN VPrefectural Nature Conservation Area
0.39 km² overlap
Hutamatashogakko
IUCN IVPrefectural Wildlife Protection Area
0.22 km² overlap
2 more protected areassorted by overlap area
Tokaisizenhodotatsuyama
IUCN IVPrefectural Wildlife Protection Area
0.21 km² overlap
Hamakitahokuseibu
IUCN IVPrefectural Wildlife Protection Area
0.00 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
713 distinct species · 2 095 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 23 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 天竜川 : 20 espèces reliées par 21 interactions GloBI sur 3 types (connectance 7.6%, 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°
15,3°C
Annual rain
2 118mm
Moisture idx (CMI)
0,53
Runoff
1 158mm/an
PET
994mm
AET
994mm
Mean slope
7,7°
Water table
248cm
Forest
51%
Crops
4%
Urban
49%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)