Big Hole River
IUCN VEasement · 1979
105 km²
County · USA
Silver Bow
United States
BSkArid, steppe, cold(42 %)
Species observed
1 345
Observations
59 675
Area
1 864,6km²
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 Silver Bow : 21 espèces reliées par 71 interactions GloBI sur 4 types (connectance 16.3%, filtre Serrano α=0.2). 9 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Espèces affichées
30
Interactions affichées
71
Connectance
0.163
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
1 345 distinct species · 59 675 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Climate
Mean T°
2,9°C
Annual rain
392mm
Warmest m°
23,8°C
Coldest m°
-14,6°C
Elevation: 1 961 m on average (min 1 352 m, max 2 889 m)
Bioclimatic details19 BIO + Köppen full + altitude statsExpert
Annual mean temp.
2,9°C
Annual rain
392mm
Warmest month
23,8°C
Coldest month
-14,6°C
Mean alt.
1 961m
Min
1 352m
Max
2 889m
Std. dev.
244m
Köppen-Geiger (dominant)
BSkArid, steppe, cold(42 %)Arid
CHELSA BIO 1-19 v2.1 · ETOPO DEM 60s · Köppen-Geiger 1991-2020 (Beck et al. 2018)
Soil & lithology
pH H₂O
6,2
Org. C
28,6g/kg
Clay
17,4%
Sand
52,9%
Silt
29,7%
Average over 0-30 cm. Per-depth details in expert panel.
Dominant lithology: ssGLiM
3 soil depths detailed0-5cm / 5-15cm / 15-30cm × 5 propsExpert
0–5 cm
pH H₂O
6,0
Org. C
47,7g/kg
Clay
16,8%
Sand
53,0%
Silt
30,2%
5–15 cm
pH H₂O
6,2
Org. C
24,7g/kg
Clay
17,6%
Sand
52,3%
Silt
30,1%
15–30 cm
pH H₂O
6,5
Org. C
13,5g/kg
Clay
17,6%
Sand
53,5%
Silt
28,9%
SoilGrids 250m (ISRIC, 2017) · GLiM v1.0 (Hartmann & Moosdorf 2012)
Land cover
Forest45.2%
Crops0.7%
Built-up0.2%
Bare soil3.8%
Other (grassland, water…)50.1%
Copernicus Global Land Cover 100m (Buchhorn et al. 2020)
Hydrology8 basins · 3 lakes · 10 rivers
Hydrology metrics for this exact territory
Stream length here
213,5km
Lake surface here
6,01km²
Basins crossed
8
Max stream order
4
Max drainage
20 472km²
Discharge in basins
17,4m³/s
Mean precip.
363mm/an
Mean T°
3,1°C
Moisture idx
-0,57
Max snow
48%
Mean runoff
100mm/an
Mean elev. (basins)
1 928m
Watersheds crossing here
- Bassin de Silver Bow Creeksub-area1 262,8 km²overlap966.70 km²52%
- Bassin de Big Hole Riversub-area2 118,2 km²overlap675.81 km²36%
- Bassin de Jefferson Riversub-area944,9 km²overlap140.17 km²8%
- Bassin de Big Hole Riversub-area261,5 km²overlap59.64 km²3%
- Bassin de Big Pipestone Creeksub-area942,7 km²overlap18.62 km²1%
- Bassin de Boulder Riversub-area1 961,3 km²overlap1.52 km²0%
- Bassin de Deep Creeksub-area268,4 km²overlap1.32 km²0%
- Bassin de Clark Forksub-area1 119,4 km²overlap0.86 km²0%
Lakes (3, top by area)
Rivers / streams (10, ord ≥ 4)
- Big Hole Riverord 4len here66.15 km12%total541 km
- Silver Bow Creekord 4len here39.85 km82%total49 km
- Browns Gulchord 3len here28.87 km100%total29 km
- Fish Creekord 5len here22.40 km6%total378 km
- Divide Creekord 2len here20.85 km100%total21 km
- Divide Creek North Forkord 2len here17.12 km100%total17 km
- Blacktail Riverord 3len here11.19 km100%total11 km
- Divide Creek South Forkord 1len here3.94 km100%total4 km
- Jefferson Riverord 5len here2.87 km1%total195 km
- Wise Riverord 3len here0.28 km1%total43 km
Live spatial overlap (cached after first hit) · HydroBASINS lev08 × HydroLAKES × HydroRIVERS v10
Human pressure
Pop. density
0hab/km²
Night light
0,8nW
Built-up
24,5%
Pesticides
1,4kg/km²
GHSL POP/Built 2020 · VIIRS lumière nocturne · PEST-CHEMGRIDS 2020 (Maggi et al.)
Protected areas5
IUCN V · 3IUCN Ib · 1IUCN Ia · 1
Humbug Spires
IUCN IbWilderness Study Area
46 km²
Basin Creek
IUCN IaResearch Natural Area · 1996
4 km²
Mt. Haggin
IUCN VWildlife Management Area
1 km²
Wetlands Reserve Program (WRP), Silver Bow, MT
IUCN VReserve Program · 2012
0 km²
WDPA (World Database on Protected Areas) — UNEP-WCMC & IUCN