Prefectural Natural Park · jpn
Okuhayade awasumon
- Area
- 348 km²
- IUCN cat.
- V
- Year
- 1959
Overview
- Designation
- Prefectural Natural Park
- IUCN category
- V · Paysage protégé
Paysage façonné par l'humain digne de conservation
- Established
- 1959
- Managing authority
- Niigata Prefecture
Source : WDPA (UNEP-WCMC, World Database on Protected Areas).
Species present
227 distinct species · 484 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 10 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 Okuhayade awasumon : 9 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 7 interactions GloBI sur 3 types (connectance 15.6%, filtre Serrano α=0.2). 1 bulle taxonomique (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology5 basins · 2 lakes · 31 rivers
Hydrology metrics for this exact territory
Stream length here
121,2km
Lake surface here
0,95km²
Basins crossed
5
Max stream order
3
Max drainage
7 512km²
Discharge in basins
44,9m³/s
Mean precip.
1 925mm/an
Mean T°
11,9°C
Moisture idx
0,53
Max snow
37%
Mean runoff
1 301mm/an
Mean elev. (basins)
219m
Watersheds crossing here
Lakes (2, top by area)
Rivers / streams (31, ord ≥ 4)
- 早出川ord 3len here21.21 km45%total47 km
- 杉川ord 1len here7.97 km100%total8 km
- 金蔵沢ord 1len here6.56 km100%total7 km
- 笠堀川ord 3len here6.51 km75%total9 km
- 仙見川ord 2len here6.29 km100%total6 km
- 五十嵐川ord 3len here5.73 km17%total34 km
- 下松沢ord 1len here5.69 km55%total10 km
- 刈谷田川ord 4len here5.32 km12%total43 km
- 中杉川ord 1len here3.89 km100%total4 km
- 金倉沢ord 1len here3.82 km100%total4 km
- 深谷沢ord 1len here3.77 km100%total4 km
- ヤナガシュク沢ord 1len here3.72 km100%total4 km
19 more river segmentssorted by Strahler order + length
- 割岩沢ord 1len here3.52 km100%total4 km
- 赤倉川ord 1len here3.46 km100%total3 km
- 今早出沢ord 2len here3.17 km51%total6 km
- 加茂川ord 3len here3.16 km18%total18 km
- 逢塞川ord 1len here2.99 km100%total3 km
- 大倉沢ord 2len here2.96 km86%total3 km
- 小俣川ord 1len here2.94 km90%total3 km
- 小又沢ord 1len here2.70 km100%total3 km
- 鎌倉沢川ord 2len here2.51 km100%total3 km
- 大川ord 2len here2.51 km100%total3 km
- 金ヶ谷ord 1len here2.32 km100%total2 km
- 駒出川ord 2len here2.10 km33%total6 km
- 布倉川ord 1len here1.94 km77%total3 km
- 広倉沢ord 2len here1.47 km53%total3 km
- ユウ沢ord 1len here0.92 km100%total1 km
- 能代川ord 3len here0.82 km7%total11 km
- 滝谷川ord 3len here0.48 km1%total35 km
- 大沢ord 1len here0.42 km22%total2 km
- 払川ord 1len here0.32 km14%total2 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Location
Fond cartographique : OpenFreeMap · © OpenStreetMap contributors · Géométrie : nos sources (GADM/HydroBASINS/HydroLAKES/HydroRIVERS/WDPA)
- Centroid
- 37.53349, 139.23670
- Open in maps
- OpenStreetMap → · Satellite →
Species observed (Phase 2)
Listing species observed within this protected area requires the GBIF v2 partition × WDPA spatial overlay matview. Computing infrastructure pending.