Hells Canyon
IUCN IbWilderness · 1975
883 km²
County · USA
Adams
United States
DsbCold, dry summer, warm summer(71 %)
Species observed
2 584
Observations
131 802
Area
3 536,2km²
Ecological tissue
Sample of 38 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
Indicateurs du tissu écologique
Tissu écologique de Adams : 27 espèces reliées par 87 interactions GloBI sur 5 types (connectance 12.4%, filtre Serrano α=0.2). 11 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
38
Interactions affichées
87
Connectance
0.124
Patrimoniales
0
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
2 584 distinct species · 131 802 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
5,8°C
Annual rain
912mm
Warmest m°
26,3°C
Coldest m°
-9,2°C
Elevation: 1 460 m on average (min 585 m, max 2 490 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
5,8°C
Annual rain
912mm
Warmest month
26,3°C
Coldest month
-9,2°C
Mean alt.
1 460m
Min
585m
Max
2 490m
Std. dev.
371m
Köppen-Geiger (dominant)
DsbCold, dry summer, warm summer(71 %)Cold
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,3
Org. C
41,4g/kg
Clay
17,0%
Sand
36,0%
Silt
47,0%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: vbGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,2
Org. C
74,4g/kg
Clay
16,9%
Sand
35,7%
Silt
47,4%
5–15 cm
pH H₂O
6,3
Org. C
32,2g/kg
Clay
17,0%
Sand
35,9%
Silt
47,1%
15–30 cm
pH H₂O
6,3
Org. C
17,7g/kg
Clay
17,2%
Sand
36,4%
Silt
46,4%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest47.1%
Crops1.2%
Built-up0.0%
Bare soil3.2%
Other (grassland, water…)48.4%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology13 basins · 5 lakes · 29 rivers
Hydrology metrics for this exact territory
Stream length here
479,3km
Lake surface here
6,61km²
Basins crossed
13
Max stream order
7
Max drainage
171 666km²
Discharge in basins
858,0m³/s
Mean precip.
633mm/an
Mean T°
4,8°C
Moisture idx
-0,33
Max snow
48%
Mean runoff
425mm/an
Mean elev. (basins)
1 444m
Watersheds crossing here
- Bassin de Little Salmon Riversub-area1 486,3 km²overlap884.80 km²25%
- Bassin de Weiser Riversub-area626,9 km²overlap628.27 km²18%
- Bassin de Weiser Riversub-area638,6 km²overlap514.27 km²15%
- Bassin de Little Weiser Riversub-area552,8 km²overlap452.16 km²13%
- Bassin de Wildhorse Riversub-area456,8 km²overlap406.47 km²11%
- Bassin de Hornet Creeksub-area285,5 km²overlap226.29 km²6%
- Bassin de Snake Riversub-area1 600,7 km²overlap219.83 km²6%
- Bassin de Snake Riversub-area198,6 km²overlap168.17 km²5%
- Bassin de Crane Creeksub-area731,2 km²overlap27.85 km²1%
Lakes (5, top by area)
Rivers / streams (29, ord ≥ 4)
- Weiser Riverord 5len here157.38 km61%total259 km
- Little Salmon Riverord 4len here67.96 km67%total101 km
- Snake Riverord 7len here42.61 km1%total2867 km
- Wildhorse Riverord 3len here28.78 km41%total71 km
- Bear Creekord 5len here28.52 km5%total575 km
- Hornet Creekord 3len here27.38 km69%total39 km
- Crooked Riverord 5len here20.44 km8%total271 km
- Little Weiser Riverord 5len here18.60 km56%total33 km
- Deep Creekord 7len here16.01 km3%total550 km
- West Fork Weiser Riverord 3len here13.33 km100%total13 km
- Rapid Riverord 3len here12.28 km34%total36 km
- Mud Creekord 2len here7.38 km16%total46 km
17 more river segmentssorted by Strahler order + length
- Granite Creekord 3len here6.39 km2%total274 km
- Paradise Creekord 4len here5.74 km8%total72 km
- Boulder Creekord 3len here3.82 km2%total228 km
- Lonesome Creekord 2len here3.55 km55%total6 km
- Echols Creekord 2len here3.10 km100%total3 km
- Granite Forkord 1len here2.31 km100%total2 km
- Hard Creekord 4len here2.28 km11%total22 km
- Lick Creekord 3len here2.12 km4%total57 km
- Fry Pan Creekord 1len here1.71 km43%total4 km
- Hall Creekord 4len here1.60 km2%total82 km
- Lake Forkord 1len here1.31 km43%total3 km
- Mill Creekord 5len here1.25 km0%total446 km
- Castle Creekord 3len here1.18 km4%total28 km
- Wyant Creekord 2len here1.16 km21%total6 km
- Granger Creekord 1len here0.97 km13%total7 km
- Elk Creekord 6len here0.10 km0%total210 km
- Rattlesnake Creekord 4len here≈ tangenttotal133 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,0nW
Built-up
2,9%
Pesticides
1,3kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas14
IUCN Ia · 6IUCN V · 5IUCN Not Assigned · 2IUCN Ib · 1
Hells Canyon-Seven Devils
IUCN VScenic Area · 1962
159 km²
Cecil D. Andrus
IUCN VWildlife Management Area
95 km²
Snake, Idaho And Oregon
IUCN VWild and Scenic River · 1975
49 km²
Rapid, Idaho
IUCN VWild and Scenic River · 1975
34 km²
Pony Creek
IUCN IaResearch Natural Area · 1996
8 km²
Complete list14 protected areas
- Hells CanyonWildernessIUCN Ib1975883 km²
- Hells Canyon-Seven DevilsScenic AreaIUCN V1962159 km²
- Cecil D. AndrusWildlife Management AreaIUCN V95 km²
- Snake, Idaho And OregonWild and Scenic RiverIUCN V197549 km²
- Rapid, IdahoWild and Scenic RiverIUCN V197534 km²
- Pony CreekResearch Natural AreaIUCN Ia19968 km²
- Rocky Comfort FlatResearch Natural AreaIUCN Ia19964 km²
- Emery CreekResearch Natural AreaIUCN Ia19963 km²
- Beer CreekResearch Natural AreaIUCN Ia19961 km²
- Wetlands Reserve Program (WRP), Adams, IDReserve ProgramIUCN V19991 km²
- Agricultural Conservation Easement Program - Wetlands Reserve Easement (ACEP-WRE)Conservation EasementIUCN Not Assigned20161 km²
- Lost Basin GrasslandResearch Natural AreaIUCN Ia19961 km²
- Council MountainResearch Natural AreaIUCN Ia19960 km²
- Boone Family TrustConservation EasementIUCN Not Assigned0 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN