Rivière· 77 segments
Boulder River
Crosses 3 administrative regions : Jefferson, Park, Sweet Grass
Total length
277km
Max discharge
115,4m³/s
Max Strahler
5
Segments matched
77
River geography3 admin regions · 0 communes
3 administrative regions crossed (GADM L2)
- JeffersonMontana · United States252.1 kmin this dpt
- Sweet GrassMontana · United States64.7 kmin this dpt
- ParkMontana · United States23.7 kmin this dpt
5 intersecting protected areas
Absaroka-Beartooth
IUCN IbWilderness
Black Sage
IUCN IbWilderness Study Area
Easement
Bernice
IUCN IaResearch Natural Area
Boulder River Delta
IUCN VEasement
1 page = 1 named river (aggregation of 77 HydroRIVERS v10 segments). Spatial join cached after first hit.
Species present
102 distinct species · 185 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 40 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 Boulder River : 30 espèces reliées par 100 interactions GloBI sur 4 types (connectance 12.8%, filtre Serrano α=0.2). 10 bulles taxonomiques (cascade genre/famille GloBI, ≥3 espèces).
Comparaison sur la connectance du réseau local complet vs distribution nationale (toutes les communes françaises).
Hydrology (HydroRIVERS v10)
Total length
277km
Max discharge
115,4m³/s
Max Strahler
5
Segments matched
77
HydroRIVERS v1.0 (Lehner et al. 2019) aggregated by name + main_riv → 1 entity = 1 named river.