HydroBASINS lev08 watershed · #4080044180
Bassin de 江合川
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 10 administrative regions : Ishinomaki, Kami Town, Kurihara, Misato, Mogami +5
Sub-basin area
766km²
Upstream area
10 122km²
Discharge
290,11m³/s
Mean elev.
250m
Administrative coverage
Hydrographic chain
▼ Drains into
Outlet (drains to ocean / endorheic)
▲ Receives from 2 basins
- Bassin de 迫川1134 km²
- Bassin de 北上川706 km²
10 dept-equivalent regions (GADM L2)
- 483.7 km²63.1% of basin
- 169.7 km²22.1% of basin
- 52.7 km²6.9% of basin
- 32.0 km²4.2% of basin
- 10.2 km²1.3% of basin
- 6.9 km²0.9% of basin
- 6.2 km²0.8% of basin
- 4.6 km²0.6% of basin
27 intersecting protected areas
Kurikoma
IUCN IIQuasi National Park
213.62 km² overlap
Kurikoma
IUCN IVPrefectural Wildlife Protection Area
78.77 km² overlap
Ouu Mountain Range
IUCN VGreen Corridor
60.36 km² overlap
Kenjozan mangokuura
IUCN VPrefectural Natural Park
25.80 km² overlap
Naruko
IUCN IVPrefectural Wildlife Protection Area
23.89 km² overlap
Kagobou-nonodakeyama
IUCN VGreen Space Environment Conservation Area(Miyagi)
19.35 km² overlap
Kabukurinuma-Shuhensuiden
IUCN IVNational Wildlife Protection Area
17.79 km² overlap
Fukiage
IUCN IVPrefectural Wildlife Protection Area
8.00 km² overlap
Tashiro
IUCN IVPrefectural Wildlife Protection Area
6.59 km² overlap
18 more protected areassorted by overlap area
Rokkaku bokujo
IUCN IVPrefectural Wildlife Protection Area
5.34 km² overlap
Jobonsan Kenjosan
IUCN IVPrefectural Wildlife Protection Area
5.12 km² overlap
Magiyama
IUCN IVPrefectural Wildlife Protection Area
4.20 km² overlap
Kejonuma
IUCN IVPrefectural Wildlife Protection Area
2.43 km² overlap
Kagoboyama
IUCN IVPrefectural Wildlife Protection Area
2.29 km² overlap
Asahiyama
IUCN IVPrefectural Wildlife Protection Area
2.24 km² overlap
Kaneyama
IUCN IVPrefectural Wildlife Protection Area
1.88 km² overlap
Jishozan Sugi
IUCN IVRare Population Protected Forest
1.34 km² overlap
Ainonuma
IUCN IVPrefectural Wildlife Protection Area
1.30 km² overlap
Ippitsu yama-Tashiro
IUCN VPrefectural Nature Conservation Area
1.29 km² overlap
Kurikoma
IUCN IVPrefectural Wildlife Protection Area
1.12 km² overlap
Kejonuma
IUCN IVNational Wildlife Protection Area
0.73 km² overlap
Sawada-kami Igune and the surrounding rice paddies
IUCN Not ApplicableOECM
0.57 km² overlap
Kejo-numa
IUCN Not ReportedWetland of International Importance (Ramsar Site)
0.32 km² overlap
Asahi yama
IUCN VPrefectural Natural Park
0.23 km² overlap
Kamanai Buna Idenshigen
IUCN IVRare Population Protected Forest
0.20 km² overlap
Rare Population Protected Forest
0.11 km² overlap
Ippitsuyama
IUCN IVPrefectural Wildlife Protection Area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
1 280 distinct species · 5 081 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 27 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 江合川 : 22 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 49 interactions GloBI sur 5 types (connectance 11.3%, filtre Serrano α=0.2). 8 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°
10,2°C
Annual rain
1 381mm
Moisture idx (CMI)
0,37
Runoff
961mm/an
PET
847mm
AET
832mm
Mean slope
7,9°
Water table
273cm
Forest
49%
Crops
18%
Urban
15%
Protected
39%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)