John Day River
IUCN VDesignated - Recreational · 1988
208 km²
County · USA
Gilliam
United States
BSkArid, steppe, cold(70 %)
Species observed
1 154
Observations
74 385
Area
3 183,9km²
Ecological tissue
Sample of 30 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 Gilliam : 21 espèces dont 1 patrimoniale (LR IUCN CR/EN/VU) reliées par 114 interactions GloBI sur 4 types (connectance 24.5%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
31
Interactions affichées
114
Connectance
0.245
Patrimoniales
1
Plus dense que (national)0 %(top 100%)
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Species present
1 154 distinct species · 74 385 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
11,0°C
Annual rain
323mm
Warmest m°
30,0°C
Coldest m°
-2,6°C
Elevation: 595 m on average (min 80 m, max 1 305 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
11,0°C
Annual rain
323mm
Warmest month
30,0°C
Coldest month
-2,6°C
Mean alt.
595m
Min
80m
Max
1 305m
Std. dev.
278m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(70 %)Arid
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
7,0
Org. C
15,6g/kg
Clay
20,2%
Sand
30,7%
Silt
49,1%
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
6,9
Org. C
22,4g/kg
Clay
19,1%
Sand
31,5%
Silt
49,5%
5–15 cm
pH H₂O
7,0
Org. C
13,8g/kg
Clay
20,3%
Sand
30,7%
Silt
48,9%
15–30 cm
pH H₂O
7,1
Org. C
10,7g/kg
Clay
21,2%
Sand
30,0%
Silt
48,8%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest1.4%
Crops18.4%
Built-up0.0%
Bare soil7.5%
Other (grassland, water…)72.7%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology11 basins · 1 lakes · 37 rivers
Hydrology metrics for this exact territory
Stream length here
719,6km
Lake surface here
0,74km²
Basins crossed
11
Max stream order
8
Max drainage
571 394km²
Discharge in basins
1 663,7m³/s
Mean precip.
341mm/an
Mean T°
9,0°C
Moisture idx
-0,66
Max snow
8%
Mean runoff
78mm/an
Mean elev. (basins)
739m
Watersheds crossing here
- Bassin de John Day Riversub-area1 224 km²overlap860.25 km²27%
- Bassin de Rock Creeksub-area1 339,8 km²overlap741.53 km²23%
- Bassin de Thirtymile Creeksub-area700,7 km²overlap557.24 km²18%
- Bassin de Columbia Riversub-area1 603,2 km²overlap413.41 km²13%
- Bassin de Willow Creeksub-area2 238 km²overlap373.15 km²12%
- Bassin de Butte Creeksub-area462,8 km²overlap100.93 km²3%
- Bassin de Grass Valley Canyonsub-area754,5 km²overlap77.31 km²2%
- Bassin de John Day Riversub-area97 km²overlap56.85 km²2%
- Bassin de Columbia Riversub-area92,4 km²overlap2.62 km²0%
2 more basinssorted by overlap
Lakes (1, top by area)
Rivers / streams (37, ord ≥ 4)
- Rock Creekord 6len here118.46 km10%total1142 km
- John Day Riverord 8len here111.71 km21%total523 km
- Columbia Riverord 8len here62.01 km2%total2971 km
- Eightmile Canyonord 3len here55.20 km74%total75 km
- Hay Creekord 3len here37.25 km38%total97 km
- Thirtymile Creekord 4len here35.96 km50%total71 km
- East Fork Thirtymile Creekord 3len here30.60 km100%total31 km
- Patill Canyonord 3len here23.36 km100%total23 km
- Lamberson Canyonord 2len here22.67 km100%total23 km
- Lone Rock Creekord 3len here19.72 km84%total23 km
- Scott Canyonord 2len here18.34 km77%total24 km
- Willow Creekord 5len here17.56 km3%total532 km
25 more river segmentssorted by Strahler order + length
- Ferry Canyonord 1len here17.44 km100%total17 km
- North Fork Butte Creekord 3len here17.38 km79%total22 km
- Juniper Creekord 3len here15.86 km26%total61 km
- Dry Fork Hay Creekord 1len here15.14 km100%total15 km
- Lost Valley Creekord 2len here14.32 km95%total15 km
- Fourmile Canyonord 2len here12.81 km51%total25 km
- Badger Canyonord 2len here9.85 km100%total10 km
- Esau Canyonord 2len here9.73 km100%total10 km
- Sniption Canyonord 1len here8.51 km100%total9 km
- South Fork Rock Creekord 2len here8.50 km32%total27 km
- Dry Fork Thirtymile Creekord 1len here7.09 km100%total7 km
- Condon Canyonord 1len here6.46 km100%total6 km
- Sixmile Creekord 1len here5.04 km30%total17 km
- Salmon Fork Thirtymile Creekord 1len here4.28 km100%total4 km
- Indian Spring Canyonord 2len here3.45 km100%total3 km
- Butte Creekord 4len here2.69 km2%total144 km
- Cottonwood Creekord 8len here2.60 km1%total436 km
- Wehrli Canyonord 1len here2.31 km100%total2 km
- Middle Fork Rock Creekord 4len here1.37 km3%total47 km
- Buckhorn Creekord 3len here1.15 km4%total33 km
- Brown Creekord 2len here0.73 km2%total48 km
- Cottonwood Canyonord 6len here0.04 km0%total15 km
- East Fork Dry Creekord 2len here0.02 km0%total10 km
- Biglow Canyonord 1len here0.01 km0%total6 km
- Pine Holloword 6len here≈ tangenttotal39 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,1nW
Built-up
2,9%
Pesticides
21,0kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas5
IUCN Ib · 3IUCN V · 2
Lower John Day
IUCN IbWilderness Study Area · 1992
103 km²
Thirtymile
IUCN IbWilderness Study Area · 1992
31 km²
North Pole Ridge
IUCN IbWilderness Study Area · 1992
30 km²
Willow Creek
IUCN VWildlife Area
3 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN