HydroBASINS lev08 watershed · #4080043980
Bassin de 閉伊川
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 8 administrative regions : Hanamaki, Iwazumi, Kawai, Miyako, Morioka +3
Sub-basin area
951,3km²
Upstream area
951,5km²
Discharge
24,71m³/s
Mean elev.
628m
Administrative coverage
8 dept-equivalent regions (GADM L2)
- 546.1 km²57.4% of basin
- 374.8 km²39.4% of basin
- 21.6 km²2.3% of basin
- 4.1 km²0.4% of basin
- 3.1 km²0.3% of basin
- 1.7 km²0.2% of basin
- 0.5 km²0.1% of basin
- 0.3 km²0.0% of basin
20 intersecting protected areas
Kitakami Highlands
IUCN VGreen Corridor
60.19 km² overlap
Hayachinesan Shuhen
IUCN IbForest Ecosystem Reserve
40.22 km² overlap
Hayachinesan
IUCN IVPrefectural Wildlife Protection Area
37.32 km² overlap
Hayachine
IUCN IIQuasi National Park
23.87 km² overlap
Miyakoshi kariya
IUCN IVPrefectural Wildlife Protection Area
13.42 km² overlap
Hayachine
IUCN IbNature Conservation Area
12.19 km² overlap
Miyakoshi miyako
IUCN IVPrefectural Wildlife Protection Area
10.21 km² overlap
Miyakoshi kawaitassobe
IUCN IVPrefectural Wildlife Protection Area
9.55 km² overlap
Miyakoshi kuzakaikogen
IUCN IVPrefectural Wildlife Protection Area
4.24 km² overlap
11 more protected areassorted by overlap area
Kuzakai kogen
IUCN VPrefectural Nature Conservation Area
3.26 km² overlap
Iwaizumicho hittori
IUCN IVPrefectural Wildlife Protection Area
1.27 km² overlap
Aomatsuba yama
IUCN VPrefectural Nature Conservation Area
0.37 km² overlap
Miyakoshi tashiro
IUCN IVPrefectural Wildlife Protection Area
0.26 km² overlap
Hittori shitsugen
IUCN VPrefectural Nature Conservation Area
0.22 km² overlap
Miyakoshi miyakowan
IUCN IVPrefectural Wildlife Protection Area
0.19 km² overlap
Kuromoriyama
IUCN VEnvironmental Green Space Conservation Area(Iwate)
0.16 km² overlap
Arakawa kogen
IUCN VPrefectural Nature Conservation Area
0.06 km² overlap
Miyakoshi sakiyama
IUCN IVPrefectural Wildlife Protection Area
0.05 km² overlap
Rare Population Protected Forest
0.05 km² overlap
Common fishery right area
0.02 km² overlap
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
979 distinct species · 2 814 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 閉伊川 : 31 espèces reliées par 43 interactions GloBI sur 6 types (connectance 5.0%, filtre Serrano α=0.2). 11 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°
7,5°C
Annual rain
1 462mm
Moisture idx (CMI)
0,46
Runoff
835mm/an
PET
785mm
AET
780mm
Mean slope
17,5°
Water table
534cm
Forest
85%
Crops
2%
Urban
2%
Protected
9%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)