HydroBASINS lev08 watershed · #4080043860

Bassin de 小本川

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 17 administrative regions : Fudai, Hachinohe, Hashikami, Hirono, Ichinohe +12

Coastal basinPfafstetter: 41301397

Sub-basin area

3 102km²

Upstream area

3 102km²

Discharge

0,03m³/s

Mean elev.

393m

Administrative coverage

17 dept-equivalent regions (GADM L2)

Iwazumi
Iwate · Japan
959.3 km²
30.9% of basin
Kuji
Iwate · Japan
625.9 km²
20.2% of basin
Hirono
Iwate · Japan
306.5 km²
9.9% of basin
Karumai
Iwate · Japan
234.6 km²
7.6% of basin
Hachinohe
Aomori · Japan
191.1 km²
6.2% of basin
Miyako
Iwate · Japan
187.2 km²
6.0% of basin
Tanohata
Iwate · Japan
151.4 km²
4.9% of basin
Kunohe
Iwate · Japan
135.3 km²
4.4% of basin

9 moreFull L2 list

Hashikami88.4 km² · 2.8%
Fudai76.8 km² · 2.5%
Noda73.3 km² · 2.4%
Kuzumaki13.5 km² · 0.4%
Morioka8.3 km² · 0.3%
Ichinohe4.0 km² · 0.1%
Ninohe2.1 km² · 0.1%
Nanbu1.0 km² · 0.0%
Kawai0.3 km² · 0.0%

30 intersecting protected areas

Sanriku Fukko (reconstruction)
IUCN V
National Park
94.63 km² overlap
Kitakami Highlands
IUCN V
Green Corridor
88.91 km² overlap
Common fishery right area(Iwate)
IUCN VI
Common fishery right area
38.80 km² overlap
Kuzishi hiraniwakogen
IUCN IV
Prefectural Wildlife Protection Area
32.36 km² overlap
Same
IUCN IV
Prefectural Wildlife Protection Area
24.90 km² overlap
Kuji keiryu
IUCN IV
Prefectural Wildlife Protection Area
21.34 km² overlap
Ryusendo
IUCN IV
Prefectural Wildlife Protection Area
18.62 km² overlap
Karumai machi karumai
IUCN IV
Prefectural Wildlife Protection Area
18.36 km² overlap
Iwaizumicho minaikawa
IUCN IV
Prefectural Wildlife Protection Area
18.01 km² overlap

21 more protected areassorted by overlap area

Kujishi Yamagatacho yamagata
IUCN IV
Prefectural Wildlife Protection Area
16.30 km² overlap
Kuji hiraniwa
IUCN V
Prefectural Natural Park
13.15 km² overlap
Iwaizumicho fuseya
IUCN IV
Prefectural Wildlife Protection Area
12.24 km² overlap
Sotoyama hayasaka kogen
IUCN V
Prefectural Natural Park
11.84 km² overlap
Hashikami
IUCN IV
Prefectural Wildlife Protection Area
11.43 km² overlap
Hironocho taneichinakanoseibu
IUCN IV
Prefectural Wildlife Protection Area
10.95 km² overlap
Miyakoshi sakiyama
IUCN IV
Prefectural Wildlife Protection Area
10.38 km² overlap
Kunohe mura oritsumedake
IUCN IV
Prefectural Wildlife Protection Area
10.11 km² overlap
Iwaizumicho hittori
IUCN IV
Prefectural Wildlife Protection Area
8.92 km² overlap
Hironocho takizawa
IUCN IV
Prefectural Wildlife Protection Area
7.28 km² overlap
Iwaizumicho kamitakizawa
IUCN IV
Prefectural Wildlife Protection Area
7.01 km² overlap
Oritsumedake
IUCN IV
Prefectural Wildlife Protection Area
6.72 km² overlap
Iwaizumicho okawa
IUCN IV
Prefectural Wildlife Protection Area
6.61 km² overlap
Kujishi yamane
IUCN IV
Prefectural Wildlife Protection Area
6.52 km² overlap
Iwaizumicho kuromoriyama
IUCN IV
Prefectural Wildlife Protection Area
6.25 km² overlap
Miyakoshi Taro hoyokichi
IUCN IV
Prefectural Wildlife Protection Area
6.15 km² overlap
Common fishery right area(Aomori)
IUCN VI
Common fishery right area
5.36 km² overlap
Kujishi tatsumicho
IUCN IV
Prefectural Wildlife Protection Area
4.87 km² overlap
Narawazudake
IUCN IV
Prefectural Wildlife Protection Area
4.83 km² overlap
Iwaizumicho oikozawa
IUCN IV
Prefectural Wildlife Protection Area
3.72 km² overlap
Tanohata mura kitayama
IUCN IV
Prefectural Wildlife Protection Area
3.47 km² overlap

Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.

Species present

1 756 distinct species · 11 235 observations

Source: GBIF Occurrence snapshot 2026-05-01.

Ecological tissue

Sample of 24 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).

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

RègnesAnimalPlanteChampignonBacterie

RelationsPredationParasitismeSymbiosePollinisation

StatutEn dangerVulnérableProtégéeEndémique

Indicateurs du tissu écologique

Tissu écologique de Bassin de 小本川 : 21 espèces reliées par 21 interactions GloBI sur 5 types (connectance 7.0%, filtre Serrano α=0.2). 4 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).

Espèces affichées

Interactions affichées

Connectance

0.070

Patrimoniales

Plus dense que (national)0 %(top 100%)

Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).

Hydroclimate (BasinATLAS lev08)

Mean T°

8,4°C

Annual rain

1 312mm

Moisture idx (CMI)

0,38

Runoff

766mm/an

PET

805mm

AET

779mm

Mean slope

11,0°

Water table

385cm

Forest

86%

Crops

Urban

Protected

13%

HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)