HydroBASINS lev08 watershed · #7080388890
Bassin de Jefferson River
A watershed (drainage basin) is not a body of water — it is the land area where rainfall converges towards a single river that eventually reaches the sea (or an endorheic basin). Boundaries follow ridgelines.
Crosses 3 administrative regions : Jefferson, Madison, Silver Bow
Sub-basin area
944,9km²
Upstream area
20 471,8km²
Discharge
55,34m³/s
Mean elev.
1 778m
Administrative coverage
Hydrographic chain
▼ Drains into
▲ Receives from 2 basins
- Bassin de Ruby River2634 km²
- Bassin de Big Hole River107 km²
3 dept-equivalent regions (GADM L2)
- Madison696.9 km²73.6% of basin
- 140.2 km²14.8% of basin
- Jefferson110.1 km²11.6% of basin
Computed live · GADM 4.1 × HydroBASINS lev08 × WDPA · cached after first hit.
Species present
713 distinct species · 8 894 observations
Source: GBIF Occurrence snapshot 2026-05-01.
Ecological tissue
Sample of 35 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 Bassin de Jefferson River : 25 espèces reliées par 108 interactions GloBI sur 4 types (connectance 18.2%, 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).
Hydroclimate (BasinATLAS lev08)
Mean T°
4,2°C
Annual rain
351mm
Moisture idx (CMI)
-0,59
Runoff
109mm/an
PET
908mm
AET
307mm
Mean slope
9,0°
Water table
582cm
Forest
36%
Crops
10%
Urban
0%
Protected
0%
HydroATLAS BasinATLAS v10 (Linke et al. 2019) · HydroBASINS lev08 (Lehner & Grill 2013)