HydroBASINS lev08 watershed · #4080528000
Bassin de 常浪川
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 6 administrative regions : Aga, Gosen, Kaneyama, Nishiaizu, Sanjō +1
Sub-basin area
383,8km²
Upstream area
383,9km²
Discharge
13,56m³/s
Mean elev.
457m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 0 basins
Source / headwater (no upstream basin)
6 dept-equivalent regions (GADM L2)
- 375.8 km²97.9% of basin
- 7.3 km²1.9% of basin
- 0.8 km²0.2% of basin
- 0.1 km²0.0% of basin
- 0.0 km²0.0% of basin
- 0.0 km²0.0% of basin
21 intersecting protected areas
Echigo line
IUCN VGreen Corridor
34.37 km² overlap
Echigosammyaku
IUCN IVBiocenosis Protected Forest
18.86 km² overlap
Mikagura dake
IUCN VPrefectural Nature Conservation Area
3.88 km² overlap
Okuaizu
IUCN IbForest Ecosystem Reserve
3.13 km² overlap
Tadami
IUCN Not ApplicableUNESCO-MAB Biosphere Reserve
1.66 km² overlap
Nishiyama
IUCN IVPrefectural Wildlife Protection Area
1.29 km² overlap
Kasabori
IUCN IVPrefectural Wildlife Protection Area
0.70 km² overlap
Okuhayade awasumon
IUCN VPrefectural Natural Park
0.70 km² overlap
Kasabori Kamoshika
IUCN IVRare Population Protected Forest
0.67 km² overlap
12 more protected areassorted by overlap area
Kijiyotaka yama
IUCN VPrefectural Nature Conservation Area
0.67 km² overlap
Oyama
IUCN IVPrefectural Wildlife Protection Area
0.46 km² overlap
Gassan
IUCN IVPrefectural Wildlife Protection Area
0.45 km² overlap
Honna mikakuradake
IUCN VPrefectural Nature Conservation Area
0.18 km² overlap
Tsuchii
IUCN VPrefectural Nature Conservation Area
0.16 km² overlap
Echigosanzan-Tadami
IUCN IIQuasi National Park
0.16 km² overlap
Aizu Mountains
IUCN VGreen Corridor
0.16 km² overlap
Okuzo Tochinoki Idenshigen
IUCN IVRare Population Protected Forest
0.10 km² overlap
Rare Population Protected Forest
0.10 km² overlap
Agano gawa line
IUCN VPrefectural Natural Park
0.08 km² overlap
Kirinzan
IUCN IVPrefectural Wildlife Protection Area
0.06 km² overlap
Gassan
IUCN VPrefectural Nature Conservation Area
0.06 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
343 distinct species · 455 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 13 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 常浪川 : 10 espèces reliées par 11 interactions GloBI sur 4 types (connectance 14.1%, filtre Serrano α=0.2). 3 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°
10,5°C
Annual rain
1 726mm
Moisture idx (CMI)
0,47
Runoff
1 116mm/an
PET
905mm
AET
876mm
Mean slope
17,6°
Water table
511cm
Forest
79%
Crops
6%
Urban
0%
Protected
2%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)